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Message-ID: <Z3cxSmk2OJYdyp41@rli9-mobl>
Date: Fri, 3 Jan 2025 08:37:30 +0800
From: Philip Li <philip.li@...el.com>
To: kernel test robot <lkp@...el.com>
CC: Ville Syrjälä <ville.syrjala@...ux.intel.com>,
<llvm@...ts.linux.dev>, <oe-kbuild-all@...ts.linux.dev>,
<linux-kernel@...r.kernel.org>
Subject: Re: drivers/gpu/drm/sti/sti_plane.h:32:28: error: bitwise operation
between different enumeration types ('enum sti_plane_type' and 'enum
sti_plane_id_of_type')
On Fri, Jan 03, 2025 at 07:37:52AM +0800, kernel test robot wrote:
> Hi Ville,
>
> FYI, the error/warning still remains.
Sorry, kindly ignore this report that the commit is not the initial cause of the issue.
>
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head: 0bc21e701a6ffacfdde7f04f87d664d82e8a13bf
> commit: 74bde7581df3e18061119e1b27b63d0a9ea57b7a drm/sti: Allow build with COMPILE_TEST=y
> date: 7 months ago
> config: hexagon-randconfig-002-20250103 (https://download.01.org/0day-ci/archive/20250103/202501030713.36t97VZZ-lkp@intel.com/config)
> compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 096551537b2a747a3387726ca618ceeb3950e9bc)
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250103/202501030713.36t97VZZ-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/202501030713.36t97VZZ-lkp@intel.com/
>
> All errors (new ones prefixed by >>):
>
> In file included from drivers/gpu/drm/sti/sti_compositor.c:10:
> In file included from include/linux/io.h:14:
> In file included from arch/hexagon/include/asm/io.h:328:
> include/asm-generic/io.h:548:31: error: performing pointer arithmetic on a null pointer has undefined behavior [-Werror,-Wnull-pointer-arithmetic]
> 548 | val = __raw_readb(PCI_IOBASE + addr);
> | ~~~~~~~~~~ ^
> include/asm-generic/io.h:561:61: error: performing pointer arithmetic on a null pointer has undefined behavior [-Werror,-Wnull-pointer-arithmetic]
> 561 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
> | ~~~~~~~~~~ ^
> include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
> 37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
> | ^
> In file included from drivers/gpu/drm/sti/sti_compositor.c:10:
> In file included from include/linux/io.h:14:
> In file included from arch/hexagon/include/asm/io.h:328:
> include/asm-generic/io.h:574:61: error: performing pointer arithmetic on a null pointer has undefined behavior [-Werror,-Wnull-pointer-arithmetic]
> 574 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
> | ~~~~~~~~~~ ^
> include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
> 35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
> | ^
> In file included from drivers/gpu/drm/sti/sti_compositor.c:10:
> In file included from include/linux/io.h:14:
> In file included from arch/hexagon/include/asm/io.h:328:
> include/asm-generic/io.h:585:33: error: performing pointer arithmetic on a null pointer has undefined behavior [-Werror,-Wnull-pointer-arithmetic]
> 585 | __raw_writeb(value, PCI_IOBASE + addr);
> | ~~~~~~~~~~ ^
> include/asm-generic/io.h:595:59: error: performing pointer arithmetic on a null pointer has undefined behavior [-Werror,-Wnull-pointer-arithmetic]
> 595 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
> | ~~~~~~~~~~ ^
> include/asm-generic/io.h:605:59: error: performing pointer arithmetic on a null pointer has undefined behavior [-Werror,-Wnull-pointer-arithmetic]
> 605 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
> | ~~~~~~~~~~ ^
> In file included from drivers/gpu/drm/sti/sti_compositor.c:18:
> In file included from include/drm/drm_vblank.h:32:
> In file included from include/drm/drm_file.h:39:
> In file included from include/drm/drm_prime.h:37:
> In file included from include/linux/scatterlist.h:8:
> In file included from include/linux/mm.h:2253:
> include/linux/vmstat.h:514:36: error: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Werror,-Wenum-enum-conversion]
> 514 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
> | ~~~~~~~~~~~ ^ ~~~
> In file included from drivers/gpu/drm/sti/sti_compositor.c:20:
> In file included from drivers/gpu/drm/sti/sti_compositor.h:15:
> In file included from drivers/gpu/drm/sti/sti_mixer.h:17:
> >> drivers/gpu/drm/sti/sti_plane.h:32:28: error: bitwise operation between different enumeration types ('enum sti_plane_type' and 'enum sti_plane_id_of_type') [-Werror,-Wenum-enum-conversion]
> 32 | STI_GDP_0 = STI_GDP | STI_ID_0,
> | ~~~~~~~ ^ ~~~~~~~~
> drivers/gpu/drm/sti/sti_plane.h:33:28: error: bitwise operation between different enumeration types ('enum sti_plane_type' and 'enum sti_plane_id_of_type') [-Werror,-Wenum-enum-conversion]
> 33 | STI_GDP_1 = STI_GDP | STI_ID_1,
> | ~~~~~~~ ^ ~~~~~~~~
> drivers/gpu/drm/sti/sti_plane.h:34:28: error: bitwise operation between different enumeration types ('enum sti_plane_type' and 'enum sti_plane_id_of_type') [-Werror,-Wenum-enum-conversion]
> 34 | STI_GDP_2 = STI_GDP | STI_ID_2,
> | ~~~~~~~ ^ ~~~~~~~~
> drivers/gpu/drm/sti/sti_plane.h:35:28: error: bitwise operation between different enumeration types ('enum sti_plane_type' and 'enum sti_plane_id_of_type') [-Werror,-Wenum-enum-conversion]
> 35 | STI_GDP_3 = STI_GDP | STI_ID_3,
> | ~~~~~~~ ^ ~~~~~~~~
> drivers/gpu/drm/sti/sti_plane.h:36:28: error: bitwise operation between different enumeration types ('enum sti_plane_type' and 'enum sti_plane_id_of_type') [-Werror,-Wenum-enum-conversion]
> 36 | STI_HQVDP_0 = STI_VDP | STI_ID_0,
> | ~~~~~~~ ^ ~~~~~~~~
> 12 errors generated.
> --
> In file included from drivers/gpu/drm/sti/sti_plane.c:14:
> In file included from include/drm/drm_gem_dma_helper.h:5:
> In file included from include/drm/drm_file.h:39:
> In file included from include/drm/drm_prime.h:37:
> In file included from include/linux/scatterlist.h:8:
> In file included from include/linux/mm.h:2253:
> include/linux/vmstat.h:514:36: error: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Werror,-Wenum-enum-conversion]
> 514 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
> | ~~~~~~~~~~~ ^ ~~~
> In file included from drivers/gpu/drm/sti/sti_plane.c:14:
> In file included from include/drm/drm_gem_dma_helper.h:5:
> In file included from include/drm/drm_file.h:39:
> In file included from include/drm/drm_prime.h:37:
> In file included from include/linux/scatterlist.h:9:
> In file included from arch/hexagon/include/asm/io.h:328:
> include/asm-generic/io.h:548:31: error: performing pointer arithmetic on a null pointer has undefined behavior [-Werror,-Wnull-pointer-arithmetic]
> 548 | val = __raw_readb(PCI_IOBASE + addr);
> | ~~~~~~~~~~ ^
> include/asm-generic/io.h:561:61: error: performing pointer arithmetic on a null pointer has undefined behavior [-Werror,-Wnull-pointer-arithmetic]
> 561 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
> | ~~~~~~~~~~ ^
> include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
> 37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
> | ^
> In file included from drivers/gpu/drm/sti/sti_plane.c:14:
> In file included from include/drm/drm_gem_dma_helper.h:5:
> In file included from include/drm/drm_file.h:39:
> In file included from include/drm/drm_prime.h:37:
> In file included from include/linux/scatterlist.h:9:
> In file included from arch/hexagon/include/asm/io.h:328:
> include/asm-generic/io.h:574:61: error: performing pointer arithmetic on a null pointer has undefined behavior [-Werror,-Wnull-pointer-arithmetic]
> 574 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
> | ~~~~~~~~~~ ^
> include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
> 35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
> | ^
> In file included from drivers/gpu/drm/sti/sti_plane.c:14:
> In file included from include/drm/drm_gem_dma_helper.h:5:
> In file included from include/drm/drm_file.h:39:
> In file included from include/drm/drm_prime.h:37:
> In file included from include/linux/scatterlist.h:9:
> In file included from arch/hexagon/include/asm/io.h:328:
> include/asm-generic/io.h:585:33: error: performing pointer arithmetic on a null pointer has undefined behavior [-Werror,-Wnull-pointer-arithmetic]
> 585 | __raw_writeb(value, PCI_IOBASE + addr);
> | ~~~~~~~~~~ ^
> include/asm-generic/io.h:595:59: error: performing pointer arithmetic on a null pointer has undefined behavior [-Werror,-Wnull-pointer-arithmetic]
> 595 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
> | ~~~~~~~~~~ ^
> include/asm-generic/io.h:605:59: error: performing pointer arithmetic on a null pointer has undefined behavior [-Werror,-Wnull-pointer-arithmetic]
> 605 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
> | ~~~~~~~~~~ ^
> In file included from drivers/gpu/drm/sti/sti_plane.c:16:
> In file included from drivers/gpu/drm/sti/sti_compositor.h:15:
> In file included from drivers/gpu/drm/sti/sti_mixer.h:17:
> >> drivers/gpu/drm/sti/sti_plane.h:32:28: error: bitwise operation between different enumeration types ('enum sti_plane_type' and 'enum sti_plane_id_of_type') [-Werror,-Wenum-enum-conversion]
> 32 | STI_GDP_0 = STI_GDP | STI_ID_0,
> | ~~~~~~~ ^ ~~~~~~~~
> drivers/gpu/drm/sti/sti_plane.h:33:28: error: bitwise operation between different enumeration types ('enum sti_plane_type' and 'enum sti_plane_id_of_type') [-Werror,-Wenum-enum-conversion]
> 33 | STI_GDP_1 = STI_GDP | STI_ID_1,
> | ~~~~~~~ ^ ~~~~~~~~
> drivers/gpu/drm/sti/sti_plane.h:34:28: error: bitwise operation between different enumeration types ('enum sti_plane_type' and 'enum sti_plane_id_of_type') [-Werror,-Wenum-enum-conversion]
> 34 | STI_GDP_2 = STI_GDP | STI_ID_2,
> | ~~~~~~~ ^ ~~~~~~~~
> drivers/gpu/drm/sti/sti_plane.h:35:28: error: bitwise operation between different enumeration types ('enum sti_plane_type' and 'enum sti_plane_id_of_type') [-Werror,-Wenum-enum-conversion]
> 35 | STI_GDP_3 = STI_GDP | STI_ID_3,
> | ~~~~~~~ ^ ~~~~~~~~
> drivers/gpu/drm/sti/sti_plane.h:36:28: error: bitwise operation between different enumeration types ('enum sti_plane_type' and 'enum sti_plane_id_of_type') [-Werror,-Wenum-enum-conversion]
> 36 | STI_HQVDP_0 = STI_VDP | STI_ID_0,
> | ~~~~~~~ ^ ~~~~~~~~
> 12 errors generated.
>
>
> vim +32 drivers/gpu/drm/sti/sti_plane.h
>
> 871bcdfea68560 drivers/gpu/drm/sti/sti_drm_plane.h Vincent Abriou 2015-07-31 30
> 871bcdfea68560 drivers/gpu/drm/sti/sti_drm_plane.h Vincent Abriou 2015-07-31 31 enum sti_plane_desc {
> 871bcdfea68560 drivers/gpu/drm/sti/sti_drm_plane.h Vincent Abriou 2015-07-31 @32 STI_GDP_0 = STI_GDP | STI_ID_0,
> 871bcdfea68560 drivers/gpu/drm/sti/sti_drm_plane.h Vincent Abriou 2015-07-31 33 STI_GDP_1 = STI_GDP | STI_ID_1,
> 871bcdfea68560 drivers/gpu/drm/sti/sti_drm_plane.h Vincent Abriou 2015-07-31 34 STI_GDP_2 = STI_GDP | STI_ID_2,
> 871bcdfea68560 drivers/gpu/drm/sti/sti_drm_plane.h Vincent Abriou 2015-07-31 35 STI_GDP_3 = STI_GDP | STI_ID_3,
> 871bcdfea68560 drivers/gpu/drm/sti/sti_drm_plane.h Vincent Abriou 2015-07-31 36 STI_HQVDP_0 = STI_VDP | STI_ID_0,
> 871bcdfea68560 drivers/gpu/drm/sti/sti_drm_plane.h Vincent Abriou 2015-07-31 37 STI_CURSOR = STI_CUR,
> 871bcdfea68560 drivers/gpu/drm/sti/sti_drm_plane.h Vincent Abriou 2015-07-31 38 STI_BACK = STI_BCK
> 871bcdfea68560 drivers/gpu/drm/sti/sti_drm_plane.h Vincent Abriou 2015-07-31 39 };
> 871bcdfea68560 drivers/gpu/drm/sti/sti_drm_plane.h Vincent Abriou 2015-07-31 40
>
> :::::: The code at line 32 was first introduced by commit
> :::::: 871bcdfea68560991bd650406e47a801ab9d635d drm/sti: code clean up
>
> :::::: TO: Vincent Abriou <vincent.abriou@...com>
> :::::: CC: Benjamin Gaignard <benjamin.gaignard@...aro.org>
>
> --
> 0-DAY CI Kernel Test Service
> https://github.com/intel/lkp-tests/wiki
>
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