linux-kernel - [jcmvbkbc-xtensa:xtensa-5.18-esp32 39/45] include/linux/mtd/xip.h:68:2: warning: #warning "missing IRQ and timer primitives for XIP MTD support"

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Date:   Sat, 4 Jun 2022 19:30:58 +0800
From:   kernel test robot <lkp@...el.com>
To:     Max Filippov <jcmvbkbc@...il.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [jcmvbkbc-xtensa:xtensa-5.18-esp32 39/45]
 include/linux/mtd/xip.h:68:2: warning: #warning "missing IRQ and timer
 primitives for XIP MTD support"

tree:   https://github.com/jcmvbkbc/linux-xtensa xtensa-5.18-esp32
head:   137adeae90088411fe27a1be624afd8336542302
commit: 91e595b15206abdfdc74585230f5c11ff7e1c3ab [39/45] WIP: xtensa: add XIP-aware MTD support
config: xtensa-allyesconfig (https://download.01.org/0day-ci/archive/20220604/202206041901.y4FClYBn-lkp@intel.com/config)
compiler: xtensa-linux-gcc (GCC) 11.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/jcmvbkbc/linux-xtensa/commit/91e595b15206abdfdc74585230f5c11ff7e1c3ab
        git remote add jcmvbkbc-xtensa https://github.com/jcmvbkbc/linux-xtensa
        git fetch --no-tags jcmvbkbc-xtensa xtensa-5.18-esp32
        git checkout 91e595b15206abdfdc74585230f5c11ff7e1c3ab
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=xtensa SHELL=/bin/bash drivers/mtd/chips/ fs/ kernel/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

   In file included from drivers/mtd/chips/cfi_probe.c:16:
>> include/linux/mtd/xip.h:68:2: warning: #warning "missing IRQ and timer primitives for XIP MTD support" [-Wcpp]
      68 | #warning "missing IRQ and timer primitives for XIP MTD support"
         |  ^~~~~~~
>> include/linux/mtd/xip.h:69:2: warning: #warning "some of the XIP MTD support code will be disabled" [-Wcpp]
      69 | #warning "some of the XIP MTD support code will be disabled"
         |  ^~~~~~~
>> include/linux/mtd/xip.h:70:2: warning: #warning "your system will therefore be unresponsive when writing or erasing flash" [-Wcpp]
      70 | #warning "your system will therefore be unresponsive when writing or erasing flash"
         |  ^~~~~~~
--
   In file included from include/linux/mtd/cfi.h:16,
                    from drivers/mtd/chips/cfi_cmdset_0002.c:39:
>> include/linux/mtd/xip.h:68:2: warning: #warning "missing IRQ and timer primitives for XIP MTD support" [-Wcpp]
      68 | #warning "missing IRQ and timer primitives for XIP MTD support"
         |  ^~~~~~~
>> include/linux/mtd/xip.h:69:2: warning: #warning "some of the XIP MTD support code will be disabled" [-Wcpp]
      69 | #warning "some of the XIP MTD support code will be disabled"
         |  ^~~~~~~
>> include/linux/mtd/xip.h:70:2: warning: #warning "your system will therefore be unresponsive when writing or erasing flash" [-Wcpp]
      70 | #warning "your system will therefore be unresponsive when writing or erasing flash"
         |  ^~~~~~~
   drivers/mtd/chips/cfi_cmdset_0002.c: In function 'xip_udelay':
>> drivers/mtd/chips/cfi_cmdset_0002.c:1070:34: warning: variable 'start' set but not used [-Wunused-but-set-variable]
    1070 |         unsigned long suspended, start = xip_currtime();
         |                                  ^~~~~
>> drivers/mtd/chips/cfi_cmdset_0002.c:1070:23: warning: variable 'suspended' set but not used [-Wunused-but-set-variable]
    1070 |         unsigned long suspended, start = xip_currtime();
         |                       ^~~~~~~~~
--
   In file included from drivers/mtd/chips/cfi_cmdset_0001.c:33:
>> include/linux/mtd/xip.h:68:2: warning: #warning "missing IRQ and timer primitives for XIP MTD support" [-Wcpp]
      68 | #warning "missing IRQ and timer primitives for XIP MTD support"
         |  ^~~~~~~
>> include/linux/mtd/xip.h:69:2: warning: #warning "some of the XIP MTD support code will be disabled" [-Wcpp]
      69 | #warning "some of the XIP MTD support code will be disabled"
         |  ^~~~~~~
>> include/linux/mtd/xip.h:70:2: warning: #warning "your system will therefore be unresponsive when writing or erasing flash" [-Wcpp]
      70 | #warning "your system will therefore be unresponsive when writing or erasing flash"
         |  ^~~~~~~
   drivers/mtd/chips/cfi_cmdset_0001.c: In function 'xip_wait_for_operation':
>> drivers/mtd/chips/cfi_cmdset_0001.c:1148:40: warning: variable 'start' set but not used [-Wunused-but-set-variable]
    1148 |         unsigned long usec, suspended, start, done;
         |                                        ^~~~~
>> drivers/mtd/chips/cfi_cmdset_0001.c:1148:29: warning: variable 'suspended' set but not used [-Wunused-but-set-variable]
    1148 |         unsigned long usec, suspended, start, done;
         |                             ^~~~~~~~~


vim +68 include/linux/mtd/xip.h

^1da177e4c3f41 Linus Torvalds 2005-04-16  67  
^1da177e4c3f41 Linus Torvalds 2005-04-16 @68  #warning "missing IRQ and timer primitives for XIP MTD support"
^1da177e4c3f41 Linus Torvalds 2005-04-16 @69  #warning "some of the XIP MTD support code will be disabled"
^1da177e4c3f41 Linus Torvalds 2005-04-16 @70  #warning "your system will therefore be unresponsive when writing or erasing flash"
^1da177e4c3f41 Linus Torvalds 2005-04-16  71  

:::::: The code at line 68 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@...970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@...970.osdl.org>

-- 
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