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Message-ID: <202510250959.Yk9JusD0-lkp@intel.com>
Date: Sat, 25 Oct 2025 09:23:54 +0800
From: kernel test robot <lkp@...el.com>
To: David Yang <mmyangfl@...il.com>, netdev@...r.kernel.org
Cc: oe-kbuild-all@...ts.linux.dev, David Yang <mmyangfl@...il.com>,
	Andrew Lunn <andrew@...n.ch>, Vladimir Oltean <olteanv@...il.com>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Simon Horman <horms@...nel.org>,
	Russell King <linux@...linux.org.uk>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 1/3] net: dsa: yt921x: Add STP/MST support

Hi David,

kernel test robot noticed the following build warnings:

[auto build test WARNING on net-next/main]

url:    https://github.com/intel-lab-lkp/linux/commits/David-Yang/net-dsa-yt921x-Add-STP-MST-support/20251024-113613
base:   net-next/main
patch link:    https://lore.kernel.org/r/20251024033237.1336249-2-mmyangfl%40gmail.com
patch subject: [PATCH net-next 1/3] net: dsa: yt921x: Add STP/MST support
config: sh-allmodconfig (https://download.01.org/0day-ci/archive/20251025/202510250959.Yk9JusD0-lkp@intel.com/config)
compiler: sh4-linux-gcc (GCC) 15.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251025/202510250959.Yk9JusD0-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202510250959.Yk9JusD0-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from include/linux/bitops.h:6,
                    from include/linux/kernel.h:23,
                    from include/linux/skbuff.h:13,
                    from include/linux/if_ether.h:19,
                    from include/linux/etherdevice.h:20,
                    from drivers/net/dsa/yt921x.c:11:
   drivers/net/dsa/yt921x.c: In function 'yt921x_dsa_vlan_msti_set':
>> include/linux/bits.h:48:27: warning: left shift count >= width of type [-Wshift-count-overflow]
      48 |              (type_max(t) << (l) &                              \
         |                           ^~
   include/linux/bits.h:51:33: note: in expansion of macro 'GENMASK_TYPE'
      51 | #define GENMASK(h, l)           GENMASK_TYPE(unsigned long, h, l)
         |                                 ^~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:341:49: note: in expansion of macro 'GENMASK'
     341 | #define  YT921X_VLAN_CTRL_STP_ID_M              GENMASK(39, 36)
         |                                                 ^~~~~~~
   drivers/net/dsa/yt921x.c:2154:18: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID_M'
    2154 |         mask64 = YT921X_VLAN_CTRL_STP_ID_M;
         |                  ^~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/bits.h:49:27: warning: right shift count >= width of type [-Wshift-count-overflow]
      49 |               type_max(t) >> (BITS_PER_TYPE(t) - 1 - (h)))))
         |                           ^~
   include/linux/bits.h:51:33: note: in expansion of macro 'GENMASK_TYPE'
      51 | #define GENMASK(h, l)           GENMASK_TYPE(unsigned long, h, l)
         |                                 ^~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:341:49: note: in expansion of macro 'GENMASK'
     341 | #define  YT921X_VLAN_CTRL_STP_ID_M              GENMASK(39, 36)
         |                                                 ^~~~~~~
   drivers/net/dsa/yt921x.c:2154:18: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID_M'
    2154 |         mask64 = YT921X_VLAN_CTRL_STP_ID_M;
         |                  ^~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from <command-line>:
>> include/linux/bits.h:48:27: warning: left shift count >= width of type [-Wshift-count-overflow]
      48 |              (type_max(t) << (l) &                              \
         |                           ^~
   include/linux/compiler_types.h:577:23: note: in definition of macro '__compiletime_assert'
     577 |                 if (!(condition))                                       \
         |                       ^~~~~~~~~
   include/linux/compiler_types.h:597:9: note: in expansion of macro '_compiletime_assert'
     597 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
      39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
         |                                     ^~~~~~~~~~~~~~~~~~
   include/linux/bitfield.h:65:17: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      65 |                 BUILD_BUG_ON_MSG(!__builtin_constant_p(_mask),          \
         |                 ^~~~~~~~~~~~~~~~
   include/linux/bitfield.h:115:17: note: in expansion of macro '__BF_FIELD_CHECK'
     115 |                 __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: ");    \
         |                 ^~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:342:57: note: in expansion of macro 'FIELD_PREP'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                         ^~~~~~~~~~
   include/linux/bits.h:51:33: note: in expansion of macro 'GENMASK_TYPE'
      51 | #define GENMASK(h, l)           GENMASK_TYPE(unsigned long, h, l)
         |                                 ^~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:341:49: note: in expansion of macro 'GENMASK'
     341 | #define  YT921X_VLAN_CTRL_STP_ID_M              GENMASK(39, 36)
         |                                                 ^~~~~~~
   drivers/net/dsa/yt921x.h:342:68: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID_M'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                                    ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.c:2155:18: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID'
    2155 |         ctrl64 = YT921X_VLAN_CTRL_STP_ID(msti->msti);
         |                  ^~~~~~~~~~~~~~~~~~~~~~~
   include/linux/bits.h:49:27: warning: right shift count >= width of type [-Wshift-count-overflow]
      49 |               type_max(t) >> (BITS_PER_TYPE(t) - 1 - (h)))))
         |                           ^~
   include/linux/compiler_types.h:577:23: note: in definition of macro '__compiletime_assert'
     577 |                 if (!(condition))                                       \
         |                       ^~~~~~~~~
   include/linux/compiler_types.h:597:9: note: in expansion of macro '_compiletime_assert'
     597 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
      39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
         |                                     ^~~~~~~~~~~~~~~~~~
   include/linux/bitfield.h:65:17: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      65 |                 BUILD_BUG_ON_MSG(!__builtin_constant_p(_mask),          \
         |                 ^~~~~~~~~~~~~~~~
   include/linux/bitfield.h:115:17: note: in expansion of macro '__BF_FIELD_CHECK'
     115 |                 __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: ");    \
         |                 ^~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:342:57: note: in expansion of macro 'FIELD_PREP'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                         ^~~~~~~~~~
   include/linux/bits.h:51:33: note: in expansion of macro 'GENMASK_TYPE'
      51 | #define GENMASK(h, l)           GENMASK_TYPE(unsigned long, h, l)
         |                                 ^~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:341:49: note: in expansion of macro 'GENMASK'
     341 | #define  YT921X_VLAN_CTRL_STP_ID_M              GENMASK(39, 36)
         |                                                 ^~~~~~~
   drivers/net/dsa/yt921x.h:342:68: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID_M'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                                    ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.c:2155:18: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID'
    2155 |         ctrl64 = YT921X_VLAN_CTRL_STP_ID(msti->msti);
         |                  ^~~~~~~~~~~~~~~~~~~~~~~
>> include/linux/bits.h:48:27: warning: left shift count >= width of type [-Wshift-count-overflow]
      48 |              (type_max(t) << (l) &                              \
         |                           ^~
   include/linux/compiler_types.h:577:23: note: in definition of macro '__compiletime_assert'
     577 |                 if (!(condition))                                       \
         |                       ^~~~~~~~~
   include/linux/compiler_types.h:597:9: note: in expansion of macro '_compiletime_assert'
     597 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
      39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
         |                                     ^~~~~~~~~~~~~~~~~~
   include/linux/bitfield.h:67:17: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      67 |                 BUILD_BUG_ON_MSG((_mask) == 0, _pfx "mask is zero");    \
         |                 ^~~~~~~~~~~~~~~~
   include/linux/bitfield.h:115:17: note: in expansion of macro '__BF_FIELD_CHECK'
     115 |                 __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: ");    \
         |                 ^~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:342:57: note: in expansion of macro 'FIELD_PREP'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                         ^~~~~~~~~~
   include/linux/bits.h:51:33: note: in expansion of macro 'GENMASK_TYPE'
      51 | #define GENMASK(h, l)           GENMASK_TYPE(unsigned long, h, l)
         |                                 ^~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:341:49: note: in expansion of macro 'GENMASK'
     341 | #define  YT921X_VLAN_CTRL_STP_ID_M              GENMASK(39, 36)
         |                                                 ^~~~~~~
   drivers/net/dsa/yt921x.h:342:68: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID_M'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                                    ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.c:2155:18: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID'
    2155 |         ctrl64 = YT921X_VLAN_CTRL_STP_ID(msti->msti);
         |                  ^~~~~~~~~~~~~~~~~~~~~~~
   include/linux/bits.h:49:27: warning: right shift count >= width of type [-Wshift-count-overflow]
      49 |               type_max(t) >> (BITS_PER_TYPE(t) - 1 - (h)))))
         |                           ^~
   include/linux/compiler_types.h:577:23: note: in definition of macro '__compiletime_assert'
     577 |                 if (!(condition))                                       \
         |                       ^~~~~~~~~
   include/linux/compiler_types.h:597:9: note: in expansion of macro '_compiletime_assert'
     597 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
      39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
         |                                     ^~~~~~~~~~~~~~~~~~
   include/linux/bitfield.h:67:17: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      67 |                 BUILD_BUG_ON_MSG((_mask) == 0, _pfx "mask is zero");    \
         |                 ^~~~~~~~~~~~~~~~
   include/linux/bitfield.h:115:17: note: in expansion of macro '__BF_FIELD_CHECK'
     115 |                 __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: ");    \
         |                 ^~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:342:57: note: in expansion of macro 'FIELD_PREP'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                         ^~~~~~~~~~
   include/linux/bits.h:51:33: note: in expansion of macro 'GENMASK_TYPE'
      51 | #define GENMASK(h, l)           GENMASK_TYPE(unsigned long, h, l)
         |                                 ^~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:341:49: note: in expansion of macro 'GENMASK'
     341 | #define  YT921X_VLAN_CTRL_STP_ID_M              GENMASK(39, 36)
         |                                                 ^~~~~~~
   drivers/net/dsa/yt921x.h:342:68: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID_M'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                                    ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.c:2155:18: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID'
    2155 |         ctrl64 = YT921X_VLAN_CTRL_STP_ID(msti->msti);
         |                  ^~~~~~~~~~~~~~~~~~~~~~~
>> include/linux/bits.h:48:27: warning: left shift count >= width of type [-Wshift-count-overflow]
      48 |              (type_max(t) << (l) &                              \
         |                           ^~
   include/linux/compiler_types.h:577:23: note: in definition of macro '__compiletime_assert'
     577 |                 if (!(condition))                                       \
         |                       ^~~~~~~~~
   include/linux/compiler_types.h:597:9: note: in expansion of macro '_compiletime_assert'
     597 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
      39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
         |                                     ^~~~~~~~~~~~~~~~~~
   include/linux/bitfield.h:68:17: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      68 |                 BUILD_BUG_ON_MSG(__builtin_constant_p(_val) ?           \
         |                 ^~~~~~~~~~~~~~~~
   include/linux/bitfield.h:115:17: note: in expansion of macro '__BF_FIELD_CHECK'
     115 |                 __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: ");    \
         |                 ^~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:342:57: note: in expansion of macro 'FIELD_PREP'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                         ^~~~~~~~~~
   include/linux/bits.h:51:33: note: in expansion of macro 'GENMASK_TYPE'
      51 | #define GENMASK(h, l)           GENMASK_TYPE(unsigned long, h, l)
         |                                 ^~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:341:49: note: in expansion of macro 'GENMASK'
     341 | #define  YT921X_VLAN_CTRL_STP_ID_M              GENMASK(39, 36)
         |                                                 ^~~~~~~
   drivers/net/dsa/yt921x.h:342:68: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID_M'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                                    ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.c:2155:18: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID'
    2155 |         ctrl64 = YT921X_VLAN_CTRL_STP_ID(msti->msti);
         |                  ^~~~~~~~~~~~~~~~~~~~~~~
   include/linux/bits.h:49:27: warning: right shift count >= width of type [-Wshift-count-overflow]
      49 |               type_max(t) >> (BITS_PER_TYPE(t) - 1 - (h)))))
         |                           ^~
   include/linux/compiler_types.h:577:23: note: in definition of macro '__compiletime_assert'
     577 |                 if (!(condition))                                       \
         |                       ^~~~~~~~~
   include/linux/compiler_types.h:597:9: note: in expansion of macro '_compiletime_assert'
     597 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
      39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
         |                                     ^~~~~~~~~~~~~~~~~~
   include/linux/bitfield.h:68:17: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      68 |                 BUILD_BUG_ON_MSG(__builtin_constant_p(_val) ?           \
         |                 ^~~~~~~~~~~~~~~~
   include/linux/bitfield.h:115:17: note: in expansion of macro '__BF_FIELD_CHECK'
     115 |                 __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: ");    \
         |                 ^~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:342:57: note: in expansion of macro 'FIELD_PREP'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                         ^~~~~~~~~~
   include/linux/bits.h:51:33: note: in expansion of macro 'GENMASK_TYPE'
      51 | #define GENMASK(h, l)           GENMASK_TYPE(unsigned long, h, l)
         |                                 ^~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:341:49: note: in expansion of macro 'GENMASK'
     341 | #define  YT921X_VLAN_CTRL_STP_ID_M              GENMASK(39, 36)
         |                                                 ^~~~~~~
   drivers/net/dsa/yt921x.h:342:68: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID_M'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                                    ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.c:2155:18: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID'
    2155 |         ctrl64 = YT921X_VLAN_CTRL_STP_ID(msti->msti);
         |                  ^~~~~~~~~~~~~~~~~~~~~~~
>> include/linux/bits.h:48:27: warning: left shift count >= width of type [-Wshift-count-overflow]
      48 |              (type_max(t) << (l) &                              \
         |                           ^~
   include/linux/compiler_types.h:577:23: note: in definition of macro '__compiletime_assert'
     577 |                 if (!(condition))                                       \
         |                       ^~~~~~~~~
   include/linux/compiler_types.h:597:9: note: in expansion of macro '_compiletime_assert'
     597 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
      39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
         |                                     ^~~~~~~~~~~~~~~~~~
   include/linux/bitfield.h:68:17: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      68 |                 BUILD_BUG_ON_MSG(__builtin_constant_p(_val) ?           \
         |                 ^~~~~~~~~~~~~~~~
   include/linux/bitfield.h:69:47: note: in expansion of macro '__bf_shf'
      69 |                                  ~((_mask) >> __bf_shf(_mask)) &        \
         |                                               ^~~~~~~~
   include/linux/bitfield.h:115:17: note: in expansion of macro '__BF_FIELD_CHECK'
     115 |                 __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: ");    \
         |                 ^~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:342:57: note: in expansion of macro 'FIELD_PREP'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                         ^~~~~~~~~~
   include/linux/bits.h:51:33: note: in expansion of macro 'GENMASK_TYPE'
      51 | #define GENMASK(h, l)           GENMASK_TYPE(unsigned long, h, l)
         |                                 ^~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:341:49: note: in expansion of macro 'GENMASK'
     341 | #define  YT921X_VLAN_CTRL_STP_ID_M              GENMASK(39, 36)
         |                                                 ^~~~~~~
   drivers/net/dsa/yt921x.h:342:68: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID_M'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                                    ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.c:2155:18: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID'
    2155 |         ctrl64 = YT921X_VLAN_CTRL_STP_ID(msti->msti);
         |                  ^~~~~~~~~~~~~~~~~~~~~~~
   include/linux/bits.h:49:27: warning: right shift count >= width of type [-Wshift-count-overflow]
      49 |               type_max(t) >> (BITS_PER_TYPE(t) - 1 - (h)))))
         |                           ^~
   include/linux/compiler_types.h:577:23: note: in definition of macro '__compiletime_assert'
     577 |                 if (!(condition))                                       \
         |                       ^~~~~~~~~
   include/linux/compiler_types.h:597:9: note: in expansion of macro '_compiletime_assert'
     597 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
      39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
         |                                     ^~~~~~~~~~~~~~~~~~
   include/linux/bitfield.h:68:17: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      68 |                 BUILD_BUG_ON_MSG(__builtin_constant_p(_val) ?           \
         |                 ^~~~~~~~~~~~~~~~
   include/linux/bitfield.h:69:47: note: in expansion of macro '__bf_shf'
      69 |                                  ~((_mask) >> __bf_shf(_mask)) &        \
         |                                               ^~~~~~~~
   include/linux/bitfield.h:115:17: note: in expansion of macro '__BF_FIELD_CHECK'
     115 |                 __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: ");    \
         |                 ^~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:342:57: note: in expansion of macro 'FIELD_PREP'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                         ^~~~~~~~~~
   include/linux/bits.h:51:33: note: in expansion of macro 'GENMASK_TYPE'
      51 | #define GENMASK(h, l)           GENMASK_TYPE(unsigned long, h, l)
         |                                 ^~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:341:49: note: in expansion of macro 'GENMASK'
     341 | #define  YT921X_VLAN_CTRL_STP_ID_M              GENMASK(39, 36)
         |                                                 ^~~~~~~
   drivers/net/dsa/yt921x.h:342:68: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID_M'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                                    ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.c:2155:18: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID'
    2155 |         ctrl64 = YT921X_VLAN_CTRL_STP_ID(msti->msti);
         |                  ^~~~~~~~~~~~~~~~~~~~~~~
>> include/linux/bits.h:48:27: warning: left shift count >= width of type [-Wshift-count-overflow]
      48 |              (type_max(t) << (l) &                              \
         |                           ^~
   include/linux/compiler_types.h:577:23: note: in definition of macro '__compiletime_assert'
     577 |                 if (!(condition))                                       \
         |                       ^~~~~~~~~
   include/linux/compiler_types.h:597:9: note: in expansion of macro '_compiletime_assert'
     597 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
      39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
         |                                     ^~~~~~~~~~~~~~~~~~
   include/linux/bitfield.h:72:17: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      72 |                 BUILD_BUG_ON_MSG(__bf_cast_unsigned(_mask, _mask) >     \
         |                 ^~~~~~~~~~~~~~~~
   include/linux/bitfield.h:72:34: note: in expansion of macro '__bf_cast_unsigned'
      72 |                 BUILD_BUG_ON_MSG(__bf_cast_unsigned(_mask, _mask) >     \
         |                                  ^~~~~~~~~~~~~~~~~~
   include/linux/bitfield.h:115:17: note: in expansion of macro '__BF_FIELD_CHECK'
     115 |                 __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: ");    \
         |                 ^~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:342:57: note: in expansion of macro 'FIELD_PREP'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                         ^~~~~~~~~~
   include/linux/bits.h:51:33: note: in expansion of macro 'GENMASK_TYPE'
      51 | #define GENMASK(h, l)           GENMASK_TYPE(unsigned long, h, l)
         |                                 ^~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:341:49: note: in expansion of macro 'GENMASK'
     341 | #define  YT921X_VLAN_CTRL_STP_ID_M              GENMASK(39, 36)
         |                                                 ^~~~~~~
   drivers/net/dsa/yt921x.h:342:68: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID_M'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                                    ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.c:2155:18: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID'
    2155 |         ctrl64 = YT921X_VLAN_CTRL_STP_ID(msti->msti);
         |                  ^~~~~~~~~~~~~~~~~~~~~~~
   include/linux/bits.h:49:27: warning: right shift count >= width of type [-Wshift-count-overflow]
      49 |               type_max(t) >> (BITS_PER_TYPE(t) - 1 - (h)))))
         |                           ^~
   include/linux/compiler_types.h:577:23: note: in definition of macro '__compiletime_assert'
     577 |                 if (!(condition))                                       \
         |                       ^~~~~~~~~
   include/linux/compiler_types.h:597:9: note: in expansion of macro '_compiletime_assert'
     597 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
      39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
         |                                     ^~~~~~~~~~~~~~~~~~
   include/linux/bitfield.h:72:17: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      72 |                 BUILD_BUG_ON_MSG(__bf_cast_unsigned(_mask, _mask) >     \
         |                 ^~~~~~~~~~~~~~~~
   include/linux/bitfield.h:72:34: note: in expansion of macro '__bf_cast_unsigned'
      72 |                 BUILD_BUG_ON_MSG(__bf_cast_unsigned(_mask, _mask) >     \
         |                                  ^~~~~~~~~~~~~~~~~~
   include/linux/bitfield.h:115:17: note: in expansion of macro '__BF_FIELD_CHECK'
     115 |                 __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: ");    \
         |                 ^~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:342:57: note: in expansion of macro 'FIELD_PREP'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                         ^~~~~~~~~~
   include/linux/bits.h:51:33: note: in expansion of macro 'GENMASK_TYPE'
      51 | #define GENMASK(h, l)           GENMASK_TYPE(unsigned long, h, l)
         |                                 ^~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:341:49: note: in expansion of macro 'GENMASK'
     341 | #define  YT921X_VLAN_CTRL_STP_ID_M              GENMASK(39, 36)
         |                                                 ^~~~~~~
   drivers/net/dsa/yt921x.h:342:68: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID_M'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                                    ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.c:2155:18: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID'
    2155 |         ctrl64 = YT921X_VLAN_CTRL_STP_ID(msti->msti);
         |                  ^~~~~~~~~~~~~~~~~~~~~~~
>> include/linux/bits.h:48:27: warning: left shift count >= width of type [-Wshift-count-overflow]
      48 |              (type_max(t) << (l) &                              \
         |                           ^~
   include/linux/compiler_types.h:577:23: note: in definition of macro '__compiletime_assert'
     577 |                 if (!(condition))                                       \
         |                       ^~~~~~~~~
   include/linux/compiler_types.h:597:9: note: in expansion of macro '_compiletime_assert'
     597 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
      39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
         |                                     ^~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
         |         ^~~~~~~~~~~~~~~~
   include/linux/build_bug.h:21:9: note: in expansion of macro 'BUILD_BUG_ON'
      21 |         BUILD_BUG_ON(((n) & ((n) - 1)) != 0)
         |         ^~~~~~~~~~~~
   include/linux/bitfield.h:75:17: note: in expansion of macro '__BUILD_BUG_ON_NOT_POWER_OF_2'
      75 |                 __BUILD_BUG_ON_NOT_POWER_OF_2((_mask) +                 \
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/bitfield.h:115:17: note: in expansion of macro '__BF_FIELD_CHECK'
     115 |                 __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: ");    \
         |                 ^~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:342:57: note: in expansion of macro 'FIELD_PREP'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                         ^~~~~~~~~~
   include/linux/bits.h:51:33: note: in expansion of macro 'GENMASK_TYPE'
      51 | #define GENMASK(h, l)           GENMASK_TYPE(unsigned long, h, l)
         |                                 ^~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:341:49: note: in expansion of macro 'GENMASK'
     341 | #define  YT921X_VLAN_CTRL_STP_ID_M              GENMASK(39, 36)
         |                                                 ^~~~~~~
   drivers/net/dsa/yt921x.h:342:68: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID_M'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                                    ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.c:2155:18: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID'
    2155 |         ctrl64 = YT921X_VLAN_CTRL_STP_ID(msti->msti);
         |                  ^~~~~~~~~~~~~~~~~~~~~~~
   include/linux/bits.h:49:27: warning: right shift count >= width of type [-Wshift-count-overflow]
      49 |               type_max(t) >> (BITS_PER_TYPE(t) - 1 - (h)))))
         |                           ^~
   include/linux/compiler_types.h:577:23: note: in definition of macro '__compiletime_assert'
     577 |                 if (!(condition))                                       \
         |                       ^~~~~~~~~
   include/linux/compiler_types.h:597:9: note: in expansion of macro '_compiletime_assert'
     597 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
      39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
         |                                     ^~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
         |         ^~~~~~~~~~~~~~~~
   include/linux/build_bug.h:21:9: note: in expansion of macro 'BUILD_BUG_ON'
      21 |         BUILD_BUG_ON(((n) & ((n) - 1)) != 0)
         |         ^~~~~~~~~~~~
   include/linux/bitfield.h:75:17: note: in expansion of macro '__BUILD_BUG_ON_NOT_POWER_OF_2'
      75 |                 __BUILD_BUG_ON_NOT_POWER_OF_2((_mask) +                 \
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/bitfield.h:115:17: note: in expansion of macro '__BF_FIELD_CHECK'
     115 |                 __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: ");    \
         |                 ^~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:342:57: note: in expansion of macro 'FIELD_PREP'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                         ^~~~~~~~~~
   include/linux/bits.h:51:33: note: in expansion of macro 'GENMASK_TYPE'
      51 | #define GENMASK(h, l)           GENMASK_TYPE(unsigned long, h, l)
         |                                 ^~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:341:49: note: in expansion of macro 'GENMASK'
     341 | #define  YT921X_VLAN_CTRL_STP_ID_M              GENMASK(39, 36)
         |                                                 ^~~~~~~
   drivers/net/dsa/yt921x.h:342:68: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID_M'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                                    ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.c:2155:18: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID'
    2155 |         ctrl64 = YT921X_VLAN_CTRL_STP_ID(msti->msti);
         |                  ^~~~~~~~~~~~~~~~~~~~~~~
>> include/linux/bits.h:48:27: warning: left shift count >= width of type [-Wshift-count-overflow]
      48 |              (type_max(t) << (l) &                              \
         |                           ^~
   include/linux/compiler_types.h:577:23: note: in definition of macro '__compiletime_assert'
     577 |                 if (!(condition))                                       \
         |                       ^~~~~~~~~
   include/linux/compiler_types.h:597:9: note: in expansion of macro '_compiletime_assert'
     597 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
      39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
         |                                     ^~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
         |         ^~~~~~~~~~~~~~~~
   include/linux/build_bug.h:21:9: note: in expansion of macro 'BUILD_BUG_ON'
      21 |         BUILD_BUG_ON(((n) & ((n) - 1)) != 0)
         |         ^~~~~~~~~~~~
   include/linux/bitfield.h:75:17: note: in expansion of macro '__BUILD_BUG_ON_NOT_POWER_OF_2'
      75 |                 __BUILD_BUG_ON_NOT_POWER_OF_2((_mask) +                 \
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/bitfield.h:76:56: note: in expansion of macro '__bf_shf'
      76 |                                               (1ULL << __bf_shf(_mask))); \
         |                                                        ^~~~~~~~
   include/linux/bitfield.h:115:17: note: in expansion of macro '__BF_FIELD_CHECK'
     115 |                 __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: ");    \
         |                 ^~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:342:57: note: in expansion of macro 'FIELD_PREP'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                         ^~~~~~~~~~
   include/linux/bits.h:51:33: note: in expansion of macro 'GENMASK_TYPE'
      51 | #define GENMASK(h, l)           GENMASK_TYPE(unsigned long, h, l)
         |                                 ^~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:341:49: note: in expansion of macro 'GENMASK'
     341 | #define  YT921X_VLAN_CTRL_STP_ID_M              GENMASK(39, 36)
         |                                                 ^~~~~~~
   drivers/net/dsa/yt921x.h:342:68: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID_M'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                                    ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.c:2155:18: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID'
    2155 |         ctrl64 = YT921X_VLAN_CTRL_STP_ID(msti->msti);
         |                  ^~~~~~~~~~~~~~~~~~~~~~~
   include/linux/bits.h:49:27: warning: right shift count >= width of type [-Wshift-count-overflow]
      49 |               type_max(t) >> (BITS_PER_TYPE(t) - 1 - (h)))))
         |                           ^~
   include/linux/compiler_types.h:577:23: note: in definition of macro '__compiletime_assert'
     577 |                 if (!(condition))                                       \
         |                       ^~~~~~~~~
   include/linux/compiler_types.h:597:9: note: in expansion of macro '_compiletime_assert'
     597 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
      39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
         |                                     ^~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
         |         ^~~~~~~~~~~~~~~~
   include/linux/build_bug.h:21:9: note: in expansion of macro 'BUILD_BUG_ON'
      21 |         BUILD_BUG_ON(((n) & ((n) - 1)) != 0)
         |         ^~~~~~~~~~~~
   include/linux/bitfield.h:75:17: note: in expansion of macro '__BUILD_BUG_ON_NOT_POWER_OF_2'
      75 |                 __BUILD_BUG_ON_NOT_POWER_OF_2((_mask) +                 \
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/bitfield.h:76:56: note: in expansion of macro '__bf_shf'
      76 |                                               (1ULL << __bf_shf(_mask))); \
         |                                                        ^~~~~~~~
   include/linux/bitfield.h:115:17: note: in expansion of macro '__BF_FIELD_CHECK'
     115 |                 __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: ");    \
         |                 ^~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:342:57: note: in expansion of macro 'FIELD_PREP'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                         ^~~~~~~~~~
   include/linux/bits.h:51:33: note: in expansion of macro 'GENMASK_TYPE'
      51 | #define GENMASK(h, l)           GENMASK_TYPE(unsigned long, h, l)
         |                                 ^~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:341:49: note: in expansion of macro 'GENMASK'
     341 | #define  YT921X_VLAN_CTRL_STP_ID_M              GENMASK(39, 36)
         |                                                 ^~~~~~~
   drivers/net/dsa/yt921x.h:342:68: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID_M'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                                    ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.c:2155:18: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID'
    2155 |         ctrl64 = YT921X_VLAN_CTRL_STP_ID(msti->msti);
         |                  ^~~~~~~~~~~~~~~~~~~~~~~
>> include/linux/bits.h:48:27: warning: left shift count >= width of type [-Wshift-count-overflow]
      48 |              (type_max(t) << (l) &                              \
         |                           ^~
   include/linux/compiler_types.h:577:23: note: in definition of macro '__compiletime_assert'
     577 |                 if (!(condition))                                       \
         |                       ^~~~~~~~~
   include/linux/compiler_types.h:597:9: note: in expansion of macro '_compiletime_assert'
     597 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
      39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
         |                                     ^~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
         |         ^~~~~~~~~~~~~~~~
   include/linux/build_bug.h:21:9: note: in expansion of macro 'BUILD_BUG_ON'
      21 |         BUILD_BUG_ON(((n) & ((n) - 1)) != 0)
         |         ^~~~~~~~~~~~
   include/linux/bitfield.h:75:17: note: in expansion of macro '__BUILD_BUG_ON_NOT_POWER_OF_2'
      75 |                 __BUILD_BUG_ON_NOT_POWER_OF_2((_mask) +                 \
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/bitfield.h:115:17: note: in expansion of macro '__BF_FIELD_CHECK'
     115 |                 __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: ");    \
         |                 ^~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:342:57: note: in expansion of macro 'FIELD_PREP'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                         ^~~~~~~~~~
   include/linux/bits.h:51:33: note: in expansion of macro 'GENMASK_TYPE'
      51 | #define GENMASK(h, l)           GENMASK_TYPE(unsigned long, h, l)
         |                                 ^~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:341:49: note: in expansion of macro 'GENMASK'
     341 | #define  YT921X_VLAN_CTRL_STP_ID_M              GENMASK(39, 36)
         |                                                 ^~~~~~~
   drivers/net/dsa/yt921x.h:342:68: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID_M'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                                    ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.c:2155:18: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID'
    2155 |         ctrl64 = YT921X_VLAN_CTRL_STP_ID(msti->msti);
         |                  ^~~~~~~~~~~~~~~~~~~~~~~
   include/linux/bits.h:49:27: warning: right shift count >= width of type [-Wshift-count-overflow]
      49 |               type_max(t) >> (BITS_PER_TYPE(t) - 1 - (h)))))
         |                           ^~
   include/linux/compiler_types.h:577:23: note: in definition of macro '__compiletime_assert'
     577 |                 if (!(condition))                                       \
         |                       ^~~~~~~~~
   include/linux/compiler_types.h:597:9: note: in expansion of macro '_compiletime_assert'
     597 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
      39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
         |                                     ^~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
         |         ^~~~~~~~~~~~~~~~
   include/linux/build_bug.h:21:9: note: in expansion of macro 'BUILD_BUG_ON'
      21 |         BUILD_BUG_ON(((n) & ((n) - 1)) != 0)
         |         ^~~~~~~~~~~~
   include/linux/bitfield.h:75:17: note: in expansion of macro '__BUILD_BUG_ON_NOT_POWER_OF_2'
      75 |                 __BUILD_BUG_ON_NOT_POWER_OF_2((_mask) +                 \
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/bitfield.h:115:17: note: in expansion of macro '__BF_FIELD_CHECK'
     115 |                 __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: ");    \
         |                 ^~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:342:57: note: in expansion of macro 'FIELD_PREP'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                         ^~~~~~~~~~
   include/linux/bits.h:51:33: note: in expansion of macro 'GENMASK_TYPE'
      51 | #define GENMASK(h, l)           GENMASK_TYPE(unsigned long, h, l)
         |                                 ^~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:341:49: note: in expansion of macro 'GENMASK'
     341 | #define  YT921X_VLAN_CTRL_STP_ID_M              GENMASK(39, 36)
         |                                                 ^~~~~~~
   drivers/net/dsa/yt921x.h:342:68: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID_M'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                                    ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.c:2155:18: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID'
    2155 |         ctrl64 = YT921X_VLAN_CTRL_STP_ID(msti->msti);
         |                  ^~~~~~~~~~~~~~~~~~~~~~~
>> include/linux/bits.h:48:27: warning: left shift count >= width of type [-Wshift-count-overflow]
      48 |              (type_max(t) << (l) &                              \
         |                           ^~
   include/linux/compiler_types.h:577:23: note: in definition of macro '__compiletime_assert'
     577 |                 if (!(condition))                                       \
         |                       ^~~~~~~~~
   include/linux/compiler_types.h:597:9: note: in expansion of macro '_compiletime_assert'
     597 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
      39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
         |                                     ^~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
         |         ^~~~~~~~~~~~~~~~
   include/linux/build_bug.h:21:9: note: in expansion of macro 'BUILD_BUG_ON'
      21 |         BUILD_BUG_ON(((n) & ((n) - 1)) != 0)
         |         ^~~~~~~~~~~~
   include/linux/bitfield.h:75:17: note: in expansion of macro '__BUILD_BUG_ON_NOT_POWER_OF_2'
      75 |                 __BUILD_BUG_ON_NOT_POWER_OF_2((_mask) +                 \
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/bitfield.h:76:56: note: in expansion of macro '__bf_shf'
      76 |                                               (1ULL << __bf_shf(_mask))); \
         |                                                        ^~~~~~~~
   include/linux/bitfield.h:115:17: note: in expansion of macro '__BF_FIELD_CHECK'
     115 |                 __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: ");    \
         |                 ^~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:342:57: note: in expansion of macro 'FIELD_PREP'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                         ^~~~~~~~~~
   include/linux/bits.h:51:33: note: in expansion of macro 'GENMASK_TYPE'
      51 | #define GENMASK(h, l)           GENMASK_TYPE(unsigned long, h, l)
         |                                 ^~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:341:49: note: in expansion of macro 'GENMASK'
     341 | #define  YT921X_VLAN_CTRL_STP_ID_M              GENMASK(39, 36)
         |                                                 ^~~~~~~
   drivers/net/dsa/yt921x.h:342:68: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID_M'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                                    ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.c:2155:18: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID'
    2155 |         ctrl64 = YT921X_VLAN_CTRL_STP_ID(msti->msti);
         |                  ^~~~~~~~~~~~~~~~~~~~~~~
   include/linux/bits.h:49:27: warning: right shift count >= width of type [-Wshift-count-overflow]
      49 |               type_max(t) >> (BITS_PER_TYPE(t) - 1 - (h)))))
         |                           ^~
   include/linux/compiler_types.h:577:23: note: in definition of macro '__compiletime_assert'
     577 |                 if (!(condition))                                       \
         |                       ^~~~~~~~~
   include/linux/compiler_types.h:597:9: note: in expansion of macro '_compiletime_assert'
     597 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
      39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
         |                                     ^~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
         |         ^~~~~~~~~~~~~~~~
   include/linux/build_bug.h:21:9: note: in expansion of macro 'BUILD_BUG_ON'
      21 |         BUILD_BUG_ON(((n) & ((n) - 1)) != 0)
         |         ^~~~~~~~~~~~
   include/linux/bitfield.h:75:17: note: in expansion of macro '__BUILD_BUG_ON_NOT_POWER_OF_2'
      75 |                 __BUILD_BUG_ON_NOT_POWER_OF_2((_mask) +                 \
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/bitfield.h:76:56: note: in expansion of macro '__bf_shf'
      76 |                                               (1ULL << __bf_shf(_mask))); \
         |                                                        ^~~~~~~~
   include/linux/bitfield.h:115:17: note: in expansion of macro '__BF_FIELD_CHECK'
     115 |                 __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: ");    \
         |                 ^~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:342:57: note: in expansion of macro 'FIELD_PREP'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                         ^~~~~~~~~~
   include/linux/bits.h:51:33: note: in expansion of macro 'GENMASK_TYPE'
      51 | #define GENMASK(h, l)           GENMASK_TYPE(unsigned long, h, l)
         |                                 ^~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:341:49: note: in expansion of macro 'GENMASK'
     341 | #define  YT921X_VLAN_CTRL_STP_ID_M              GENMASK(39, 36)
         |                                                 ^~~~~~~
   drivers/net/dsa/yt921x.h:342:68: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID_M'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                                    ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.c:2155:18: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID'
    2155 |         ctrl64 = YT921X_VLAN_CTRL_STP_ID(msti->msti);
         |                  ^~~~~~~~~~~~~~~~~~~~~~~
   In file included from include/linux/mdio.h:10,
                    from drivers/net/dsa/yt921x.c:16:
>> include/linux/bits.h:48:27: warning: left shift count >= width of type [-Wshift-count-overflow]
      48 |              (type_max(t) << (l) &                              \
         |                           ^~
   include/linux/bitfield.h:45:38: note: in definition of macro '__bf_shf'
      45 | #define __bf_shf(x) (__builtin_ffsll(x) - 1)
         |                                      ^
   drivers/net/dsa/yt921x.h:342:57: note: in expansion of macro 'FIELD_PREP'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                         ^~~~~~~~~~
   include/linux/bits.h:51:33: note: in expansion of macro 'GENMASK_TYPE'
      51 | #define GENMASK(h, l)           GENMASK_TYPE(unsigned long, h, l)
         |                                 ^~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:341:49: note: in expansion of macro 'GENMASK'
     341 | #define  YT921X_VLAN_CTRL_STP_ID_M              GENMASK(39, 36)
         |                                                 ^~~~~~~
   drivers/net/dsa/yt921x.h:342:68: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID_M'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                                    ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.c:2155:18: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID'
    2155 |         ctrl64 = YT921X_VLAN_CTRL_STP_ID(msti->msti);
         |                  ^~~~~~~~~~~~~~~~~~~~~~~
   include/linux/bits.h:49:27: warning: right shift count >= width of type [-Wshift-count-overflow]
      49 |               type_max(t) >> (BITS_PER_TYPE(t) - 1 - (h)))))
         |                           ^~
   include/linux/bitfield.h:45:38: note: in definition of macro '__bf_shf'
      45 | #define __bf_shf(x) (__builtin_ffsll(x) - 1)
         |                                      ^
   drivers/net/dsa/yt921x.h:342:57: note: in expansion of macro 'FIELD_PREP'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                         ^~~~~~~~~~
   include/linux/bits.h:51:33: note: in expansion of macro 'GENMASK_TYPE'
      51 | #define GENMASK(h, l)           GENMASK_TYPE(unsigned long, h, l)
         |                                 ^~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:341:49: note: in expansion of macro 'GENMASK'
     341 | #define  YT921X_VLAN_CTRL_STP_ID_M              GENMASK(39, 36)
         |                                                 ^~~~~~~
   drivers/net/dsa/yt921x.h:342:68: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID_M'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                                    ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.c:2155:18: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID'
    2155 |         ctrl64 = YT921X_VLAN_CTRL_STP_ID(msti->msti);
         |                  ^~~~~~~~~~~~~~~~~~~~~~~
>> include/linux/bits.h:48:27: warning: left shift count >= width of type [-Wshift-count-overflow]
      48 |              (type_max(t) << (l) &                              \
         |                           ^~
   include/linux/bitfield.h:116:63: note: in definition of macro 'FIELD_PREP'
     116 |                 ((typeof(_mask))(_val) << __bf_shf(_mask)) & (_mask);   \
         |                                                               ^~~~~
   include/linux/bits.h:51:33: note: in expansion of macro 'GENMASK_TYPE'
      51 | #define GENMASK(h, l)           GENMASK_TYPE(unsigned long, h, l)
         |                                 ^~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:341:49: note: in expansion of macro 'GENMASK'
     341 | #define  YT921X_VLAN_CTRL_STP_ID_M              GENMASK(39, 36)
         |                                                 ^~~~~~~
   drivers/net/dsa/yt921x.h:342:68: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID_M'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                                    ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.c:2155:18: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID'
    2155 |         ctrl64 = YT921X_VLAN_CTRL_STP_ID(msti->msti);
         |                  ^~~~~~~~~~~~~~~~~~~~~~~
   include/linux/bits.h:49:27: warning: right shift count >= width of type [-Wshift-count-overflow]
      49 |               type_max(t) >> (BITS_PER_TYPE(t) - 1 - (h)))))
         |                           ^~
   include/linux/bitfield.h:116:63: note: in definition of macro 'FIELD_PREP'
     116 |                 ((typeof(_mask))(_val) << __bf_shf(_mask)) & (_mask);   \
         |                                                               ^~~~~
   include/linux/bits.h:51:33: note: in expansion of macro 'GENMASK_TYPE'
      51 | #define GENMASK(h, l)           GENMASK_TYPE(unsigned long, h, l)
         |                                 ^~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:341:49: note: in expansion of macro 'GENMASK'
     341 | #define  YT921X_VLAN_CTRL_STP_ID_M              GENMASK(39, 36)
         |                                                 ^~~~~~~
   drivers/net/dsa/yt921x.h:342:68: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID_M'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                                    ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.c:2155:18: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID'
    2155 |         ctrl64 = YT921X_VLAN_CTRL_STP_ID(msti->msti);
         |                  ^~~~~~~~~~~~~~~~~~~~~~~
   include/linux/compiler_types.h:597:45: error: call to '__compiletime_assert_943' declared with attribute error: FIELD_PREP: mask is zero
     597 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |                                             ^
   include/linux/compiler_types.h:578:25: note: in definition of macro '__compiletime_assert'
     578 |                         prefix ## suffix();                             \
         |                         ^~~~~~
   include/linux/compiler_types.h:597:9: note: in expansion of macro '_compiletime_assert'
     597 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
      39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
         |                                     ^~~~~~~~~~~~~~~~~~
   include/linux/bitfield.h:67:17: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      67 |                 BUILD_BUG_ON_MSG((_mask) == 0, _pfx "mask is zero");    \
         |                 ^~~~~~~~~~~~~~~~
   include/linux/bitfield.h:115:17: note: in expansion of macro '__BF_FIELD_CHECK'
     115 |                 __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: ");    \
         |                 ^~~~~~~~~~~~~~~~
   drivers/net/dsa/yt921x.h:342:57: note: in expansion of macro 'FIELD_PREP'
     342 | #define   YT921X_VLAN_CTRL_STP_ID(x)                    FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
         |                                                         ^~~~~~~~~~
   drivers/net/dsa/yt921x.c:2155:18: note: in expansion of macro 'YT921X_VLAN_CTRL_STP_ID'
    2155 |         ctrl64 = YT921X_VLAN_CTRL_STP_ID(msti->msti);
         |                  ^~~~~~~~~~~~~~~~~~~~~~~
..


vim +48 include/linux/bits.h

31299a5e021124 Vincent Mailhol 2025-03-26  35  
19408200c09485 Vincent Mailhol 2025-03-26  36  /*
19408200c09485 Vincent Mailhol 2025-03-26  37   * Generate a mask for the specified type @t. Additional checks are made to
19408200c09485 Vincent Mailhol 2025-03-26  38   * guarantee the value returned fits in that type, relying on
19408200c09485 Vincent Mailhol 2025-03-26  39   * -Wshift-count-overflow compiler check to detect incompatible arguments.
19408200c09485 Vincent Mailhol 2025-03-26  40   * For example, all these create build errors or warnings:
19408200c09485 Vincent Mailhol 2025-03-26  41   *
19408200c09485 Vincent Mailhol 2025-03-26  42   * - GENMASK(15, 20): wrong argument order
19408200c09485 Vincent Mailhol 2025-03-26  43   * - GENMASK(72, 15): doesn't fit unsigned long
19408200c09485 Vincent Mailhol 2025-03-26  44   * - GENMASK_U32(33, 15): doesn't fit in a u32
19408200c09485 Vincent Mailhol 2025-03-26  45   */
19408200c09485 Vincent Mailhol 2025-03-26  46  #define GENMASK_TYPE(t, h, l)					\
19408200c09485 Vincent Mailhol 2025-03-26  47  	((t)(GENMASK_INPUT_CHECK(h, l) +			\
19408200c09485 Vincent Mailhol 2025-03-26 @48  	     (type_max(t) << (l) &				\
19408200c09485 Vincent Mailhol 2025-03-26  49  	      type_max(t) >> (BITS_PER_TYPE(t) - 1 - (h)))))
19408200c09485 Vincent Mailhol 2025-03-26  50  

-- 
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