linux-kernel - [mchinth:sep_socwatch_linux_5_17 1/1] drivers/platform/x86/socperf/socperfdrv.o: warning: objtool: socperf_Service

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Message-ID: <202205072006.fzA1yAt5-lkp@intel.com>
Date:   Sat, 7 May 2022 20:20:31 +0800
From:   kernel test robot <lkp@...el.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        swedhanav <swedhana.viswanathan@...el.com>
Subject: [mchinth:sep_socwatch_linux_5_17 1/1]
 drivers/platform/x86/socperf/socperfdrv.o: warning: objtool:
 socperf_Service_IOCTL()+0x1e: unreachable instruction

tree:   https://github.com/mchinth/linux sep_socwatch_linux_5_17
head:   279a0843e522ec88123ebc978d37ddb6bf7bb2b8
commit: 279a0843e522ec88123ebc978d37ddb6bf7bb2b8 [1/1] Merge branch 'master' into sep_socwatch_linux_5_17
config: x86_64-randconfig-a004-20220502 (https://download.01.org/0day-ci/archive/20220507/202205072006.fzA1yAt5-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.2.0-20) 11.2.0
reproduce (this is a W=1 build):
        # https://github.com/mchinth/linux/commit/279a0843e522ec88123ebc978d37ddb6bf7bb2b8
        git remote add mchinth https://github.com/mchinth/linux
        git fetch --no-tags mchinth sep_socwatch_linux_5_17
        git checkout 279a0843e522ec88123ebc978d37ddb6bf7bb2b8
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/platform/

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

All warnings (new ones prefixed by >>):

   drivers/platform/x86/socperf/socperfdrv.c:208:13: warning: no previous prototype for 'SOCPERF_Read_Data3' [-Wmissing-prototypes]
     208 | extern VOID SOCPERF_Read_Data3(PVOID data_buffer)
         |             ^~~~~~~~~~~~~~~~~~
   drivers/platform/x86/socperf/socperfdrv.c:990:1: warning: no previous prototype for 'SOCPERF_Switch_Group3' [-Wmissing-prototypes]
     990 | SOCPERF_Switch_Group3(VOID)
         | ^~~~~~~~~~~~~~~~~~~~~
   drivers/platform/x86/socperf/socperfdrv.c:1175:13: warning: no previous prototype for 'lwpmudrv_Stop_Mem' [-Wmissing-prototypes]
    1175 | extern VOID lwpmudrv_Stop_Mem(VOID)
         |             ^~~~~~~~~~~~~~~~~
   drivers/platform/x86/socperf/socperfdrv.c:1392:22: warning: no previous prototype for 'socperf_Service_IOCTL' [-Wmissing-prototypes]
    1392 | extern IOCTL_OP_TYPE socperf_Service_IOCTL(IOCTL_USE_INODE struct file *filp,
         |                      ^~~~~~~~~~~~~~~~~~~~~
   drivers/platform/x86/socperf/socperfdrv.c:1516:13: warning: no previous prototype for 'socperf_Device_Control' [-Wmissing-prototypes]
    1516 | extern long socperf_Device_Control(IOCTL_USE_INODE struct file *filp,
         |             ^~~~~~~~~~~~~~~~~~~~~~
   drivers/platform/x86/socperf/socperfdrv.c:1551:13: warning: no previous prototype for 'socperf_Device_Control_Compat' [-Wmissing-prototypes]
    1551 | extern long socperf_Device_Control_Compat(struct file *filp, unsigned int cmd,
         |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/platform/x86/socperf/socperfdrv.c:1602:12: warning: no previous prototype for 'SOCPERF_Abnormal_Terminate' [-Wmissing-prototypes]
    1602 | extern int SOCPERF_Abnormal_Terminate(void)
         |            ^~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/platform/x86/socperf/socperfdrv.o: warning: objtool: socperf_Service_IOCTL()+0x1e: unreachable instruction
--
   drivers/platform/x86/socwatch/sw_driver.c: In function 'sw_collection_stop_i':
   drivers/platform/x86/socwatch/sw_driver.c:573:101: warning: suggest braces around empty body in an 'if' statement [-Wempty-body]
     573 |                         "Warning: some trace_notifier probe functions could NOT be unregistered!\n");
         |                                                                                                     ^
   drivers/platform/x86/socwatch/sw_driver.c: In function 'sw_collection_poll_i':
   drivers/platform/x86/socwatch/sw_driver.c:642:56: warning: suggest braces around empty body in an 'if' statement [-Wempty-body]
     642 |                 pw_pr_debug("DEBUG: EMPTY POLL LIST\n");
         |                                                        ^
   drivers/platform/x86/socwatch/sw_driver.c: In function 'sw_load_driver_i':
   drivers/platform/x86/socwatch/sw_driver.c:1698:62: warning: suggest braces around empty body in an 'else' statement [-Wempty-body]
    1698 |                         pw_pr_debug("OK, resetting worked\n");
         |                                                              ^
   drivers/platform/x86/socwatch/sw_driver.c: In function 'sw_unload_driver_i':
   drivers/platform/x86/socwatch/sw_driver.c:1715:62: warning: suggest braces around empty body in an 'else' statement [-Wempty-body]
    1715 |                         pw_pr_debug("OK, resetting worked\n");
         |                                                              ^
>> drivers/platform/x86/socwatch/sw_driver.o: warning: objtool: sw_unlocked_handle_ioctl_i()+0x171: unreachable instruction

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