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* [intel-tdx:guest 47/63] drivers/acpi/acpica/hwsleep.c:119:25: warning: suggest braces around empty body in an 'if' statement
@ 2021-05-13  9:25 kernel test robot
  0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2021-05-13  9:25 UTC (permalink / raw)
  To: kbuild-all

[-- Attachment #1: Type: text/plain, Size: 20154 bytes --]

tree:   https://github.com/intel/tdx.git guest
head:   8c20c364d1f52e432181d142054b1c2efa0ae6d3
commit: 96c781481b4771fb0fb4cc62072a6b1b50a0cea2 [47/63] x86/tdx: Skip WBINVD instruction for TDX guest
config: ia64-randconfig-p001-20210513 (attached as .config)
compiler: ia64-linux-gcc (GCC) 9.3.0
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/intel/tdx/commit/96c781481b4771fb0fb4cc62072a6b1b50a0cea2
        git remote add intel-tdx https://github.com/intel/tdx.git
        git fetch --no-tags intel-tdx guest
        git checkout 96c781481b4771fb0fb4cc62072a6b1b50a0cea2
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 ARCH=ia64 

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

All warnings (new ones prefixed by >>):

   drivers/acpi/acpica/hwsleep.c: In function 'acpi_hw_legacy_sleep':
>> drivers/acpi/acpica/hwsleep.c:119:25: warning: suggest braces around empty body in an 'if' statement [-Wempty-body]
     119 |   ACPI_FLUSH_CPU_CACHE();
         |                         ^


vim +/if +119 drivers/acpi/acpica/hwsleep.c

^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   17  
709585765734e9 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2012-02-14   18  #if (!ACPI_REDUCED_HARDWARE)	/* Entire module */
44f6c01242da4e drivers/acpi/hardware/hwsleep.c Robert Moore               2005-04-18   19  /*******************************************************************************
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   20   *
2feec47d4c5f80 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2012-02-14   21   * FUNCTION:    acpi_hw_legacy_sleep
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   22   *
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   23   * PARAMETERS:  sleep_state         - Which sleep state to enter
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   24   *
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   25   * RETURN:      Status
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   26   *
2feec47d4c5f80 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2012-02-14   27   * DESCRIPTION: Enter a system sleep state via the legacy FADT PM registers
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   28   *              THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   29   *
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   30   ******************************************************************************/
3f6f49c7854c92 drivers/acpi/acpica/hwsleep.c   Len Brown                  2012-07-26   31  acpi_status acpi_hw_legacy_sleep(u8 sleep_state)
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   32  {
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   33  	struct acpi_bit_register_info *sleep_type_reg_info;
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   34  	struct acpi_bit_register_info *sleep_enable_reg_info;
2feec47d4c5f80 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2012-02-14   35  	u32 pm1a_control;
2feec47d4c5f80 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2012-02-14   36  	u32 pm1b_control;
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   37  	u32 in_value;
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   38  	acpi_status status;
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   39  
2feec47d4c5f80 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2012-02-14   40  	ACPI_FUNCTION_TRACE(hw_legacy_sleep);
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   41  
4be44fcd3bf648 drivers/acpi/hardware/hwsleep.c Len Brown                  2005-08-05   42  	sleep_type_reg_info =
82d79b86646504 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2009-02-18   43  	    acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_TYPE);
4be44fcd3bf648 drivers/acpi/hardware/hwsleep.c Len Brown                  2005-08-05   44  	sleep_enable_reg_info =
4be44fcd3bf648 drivers/acpi/hardware/hwsleep.c Len Brown                  2005-08-05   45  	    acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_ENABLE);
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   46  
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   47  	/* Clear wake status */
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   48  
1fad87385e7e82 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2015-12-29   49  	status = acpi_write_bit_register(ACPI_BITREG_WAKE_STATUS,
1fad87385e7e82 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2015-12-29   50  					 ACPI_CLEAR_STATUS);
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   51  	if (ACPI_FAILURE(status)) {
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   52  		return_ACPI_STATUS(status);
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   53  	}
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   54  
fa85015c0d9588 drivers/acpi/acpica/hwsleep.c   Rafael J. Wysocki          2018-07-09   55  	/* Disable all GPEs */
fa85015c0d9588 drivers/acpi/acpica/hwsleep.c   Rafael J. Wysocki          2018-07-09   56  	status = acpi_hw_disable_all_gpes();
fa85015c0d9588 drivers/acpi/acpica/hwsleep.c   Rafael J. Wysocki          2018-07-09   57  	if (ACPI_FAILURE(status)) {
fa85015c0d9588 drivers/acpi/acpica/hwsleep.c   Rafael J. Wysocki          2018-07-09   58  		return_ACPI_STATUS(status);
fa85015c0d9588 drivers/acpi/acpica/hwsleep.c   Rafael J. Wysocki          2018-07-09   59  	}
fa85015c0d9588 drivers/acpi/acpica/hwsleep.c   Rafael J. Wysocki          2018-07-09   60  	status = acpi_hw_clear_acpi_status();
1d99967badac59 drivers/acpi/hardware/hwsleep.c Alexey Starikovskiy        2007-03-12   61  	if (ACPI_FAILURE(status)) {
1d99967badac59 drivers/acpi/hardware/hwsleep.c Alexey Starikovskiy        2007-03-12   62  		return_ACPI_STATUS(status);
1d99967badac59 drivers/acpi/hardware/hwsleep.c Alexey Starikovskiy        2007-03-12   63  	}
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   64  	acpi_gbl_system_awake_and_running = FALSE;
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   65  
fa85015c0d9588 drivers/acpi/acpica/hwsleep.c   Rafael J. Wysocki          2018-07-09   66  	 /* Enable all wakeup GPEs */
73459f73e5d160 drivers/acpi/hardware/hwsleep.c Robert Moore               2005-06-24   67  	status = acpi_hw_enable_all_wakeup_gpes();
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   68  	if (ACPI_FAILURE(status)) {
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   69  		return_ACPI_STATUS(status);
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   70  	}
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   71  
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   72  	/* Get current value of PM1A control */
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   73  
32c9ef994d9135 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2009-02-18   74  	status = acpi_hw_register_read(ACPI_REGISTER_PM1_CONTROL,
32c9ef994d9135 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2009-02-18   75  				       &pm1a_control);
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   76  	if (ACPI_FAILURE(status)) {
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   77  		return_ACPI_STATUS(status);
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   78  	}
44f6c01242da4e drivers/acpi/hardware/hwsleep.c Robert Moore               2005-04-18   79  	ACPI_DEBUG_PRINT((ACPI_DB_INIT,
b27d65975c252f drivers/acpi/acpica/hwsleep.c   Bob Moore                  2010-05-26   80  			  "Entering sleep state [S%u]\n", sleep_state));
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   81  
32c9ef994d9135 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2009-02-18   82  	/* Clear the SLP_EN and SLP_TYP fields */
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   83  
32c9ef994d9135 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2009-02-18   84  	pm1a_control &= ~(sleep_type_reg_info->access_bit_mask |
44f6c01242da4e drivers/acpi/hardware/hwsleep.c Robert Moore               2005-04-18   85  			  sleep_enable_reg_info->access_bit_mask);
32c9ef994d9135 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2009-02-18   86  	pm1b_control = pm1a_control;
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   87  
32c9ef994d9135 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2009-02-18   88  	/* Insert the SLP_TYP bits */
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   89  
32c9ef994d9135 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2009-02-18   90  	pm1a_control |=
4be44fcd3bf648 drivers/acpi/hardware/hwsleep.c Len Brown                  2005-08-05   91  	    (acpi_gbl_sleep_type_a << sleep_type_reg_info->bit_position);
32c9ef994d9135 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2009-02-18   92  	pm1b_control |=
4be44fcd3bf648 drivers/acpi/hardware/hwsleep.c Len Brown                  2005-08-05   93  	    (acpi_gbl_sleep_type_b << sleep_type_reg_info->bit_position);
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   94  
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   95  	/*
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   96  	 * We split the writes of SLP_TYP and SLP_EN to workaround
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   97  	 * poorly implemented hardware.
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   98  	 */
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16   99  
32c9ef994d9135 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2009-02-18  100  	/* Write #1: write the SLP_TYP data to the PM1 Control registers */
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  101  
32c9ef994d9135 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2009-02-18  102  	status = acpi_hw_write_pm1_control(pm1a_control, pm1b_control);
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  103  	if (ACPI_FAILURE(status)) {
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  104  		return_ACPI_STATUS(status);
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  105  	}
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  106  
32c9ef994d9135 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2009-02-18  107  	/* Insert the sleep enable (SLP_EN) bit */
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  108  
32c9ef994d9135 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2009-02-18  109  	pm1a_control |= sleep_enable_reg_info->access_bit_mask;
32c9ef994d9135 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2009-02-18  110  	pm1b_control |= sleep_enable_reg_info->access_bit_mask;
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  111  
96c781481b4771 drivers/acpi/acpica/hwsleep.c   Kuppuswamy Sathyanarayanan 2021-05-12  112  	/*
96c781481b4771 drivers/acpi/acpica/hwsleep.c   Kuppuswamy Sathyanarayanan 2021-05-12  113  	 * WBINVD instruction is not supported in TDX
96c781481b4771 drivers/acpi/acpica/hwsleep.c   Kuppuswamy Sathyanarayanan 2021-05-12  114  	 * guest. Since ACPI_FLUSH_CPU_CACHE() uses
96c781481b4771 drivers/acpi/acpica/hwsleep.c   Kuppuswamy Sathyanarayanan 2021-05-12  115  	 * WBINVD, skip cache flushes for TDX guests.
96c781481b4771 drivers/acpi/acpica/hwsleep.c   Kuppuswamy Sathyanarayanan 2021-05-12  116  	 */
96c781481b4771 drivers/acpi/acpica/hwsleep.c   Kuppuswamy Sathyanarayanan 2021-05-12  117  	if (!protected_guest_has(GUEST_TYPE_TDX))
32c9ef994d9135 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2009-02-18  118  		/* Flush caches, as per ACPI specification */
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16 @119  		ACPI_FLUSH_CPU_CACHE();
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  120  
0fc5e8f4e4b33d drivers/acpi/acpica/hwsleep.c   Lv Zheng                   2016-12-28  121  	status = acpi_os_enter_sleep(sleep_state, pm1a_control, pm1b_control);
0fc5e8f4e4b33d drivers/acpi/acpica/hwsleep.c   Lv Zheng                   2016-12-28  122  	if (status == AE_CTRL_TERMINATE) {
09f98a825a821f drivers/acpi/acpica/hwsleep.c   Tang Liang                 2011-12-09  123  		return_ACPI_STATUS(AE_OK);
0fc5e8f4e4b33d drivers/acpi/acpica/hwsleep.c   Lv Zheng                   2016-12-28  124  	}
0fc5e8f4e4b33d drivers/acpi/acpica/hwsleep.c   Lv Zheng                   2016-12-28  125  	if (ACPI_FAILURE(status)) {
09f98a825a821f drivers/acpi/acpica/hwsleep.c   Tang Liang                 2011-12-09  126  		return_ACPI_STATUS(status);
0fc5e8f4e4b33d drivers/acpi/acpica/hwsleep.c   Lv Zheng                   2016-12-28  127  	}
0fc5e8f4e4b33d drivers/acpi/acpica/hwsleep.c   Lv Zheng                   2016-12-28  128  
32c9ef994d9135 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2009-02-18  129  	/* Write #2: Write both SLP_TYP + SLP_EN */
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  130  
32c9ef994d9135 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2009-02-18  131  	status = acpi_hw_write_pm1_control(pm1a_control, pm1b_control);
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  132  	if (ACPI_FAILURE(status)) {
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  133  		return_ACPI_STATUS(status);
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  134  	}
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  135  
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  136  	if (sleep_state > ACPI_STATE_S3) {
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  137  		/*
44f6c01242da4e drivers/acpi/hardware/hwsleep.c Robert Moore               2005-04-18  138  		 * We wanted to sleep > S3, but it didn't happen (by virtue of the
44f6c01242da4e drivers/acpi/hardware/hwsleep.c Robert Moore               2005-04-18  139  		 * fact that we are still executing!)
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  140  		 *
44f6c01242da4e drivers/acpi/hardware/hwsleep.c Robert Moore               2005-04-18  141  		 * Wait ten seconds, then try again. This is to get S4/S5 to work on
44f6c01242da4e drivers/acpi/hardware/hwsleep.c Robert Moore               2005-04-18  142  		 * all machines.
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  143  		 *
d4913dc6d0c680 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2009-03-06  144  		 * We wait so long to allow chipsets that poll this reg very slowly
d4913dc6d0c680 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2009-03-06  145  		 * to still read the right value. Ideally, this block would go
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  146  		 * away entirely.
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  147  		 */
c41679a4481d5b drivers/acpi/acpica/hwsleep.c   Bob Moore                  2012-12-31  148  		acpi_os_stall(10 * ACPI_USEC_PER_SEC);
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  149  
d30dc9abb4aacf drivers/acpi/hardware/hwsleep.c Alexey Starikovskiy        2007-09-30  150  		status = acpi_hw_register_write(ACPI_REGISTER_PM1_CONTROL,
4be44fcd3bf648 drivers/acpi/hardware/hwsleep.c Len Brown                  2005-08-05  151  						sleep_enable_reg_info->
4be44fcd3bf648 drivers/acpi/hardware/hwsleep.c Len Brown                  2005-08-05  152  						access_bit_mask);
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  153  		if (ACPI_FAILURE(status)) {
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  154  			return_ACPI_STATUS(status);
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  155  		}
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  156  	}
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  157  
2feec47d4c5f80 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2012-02-14  158  	/* Wait for transition back to Working State */
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  159  
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  160  	do {
50ffba1bd3120b drivers/acpi/acpica/hwsleep.c   Bob Moore                  2009-02-23  161  		status =
50ffba1bd3120b drivers/acpi/acpica/hwsleep.c   Bob Moore                  2009-02-23  162  		    acpi_read_bit_register(ACPI_BITREG_WAKE_STATUS, &in_value);
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  163  		if (ACPI_FAILURE(status)) {
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  164  			return_ACPI_STATUS(status);
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  165  		}
2feec47d4c5f80 drivers/acpi/acpica/hwsleep.c   Bob Moore                  2012-02-14  166  
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  167  	} while (!in_value);
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  168  
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  169  	return_ACPI_STATUS(AE_OK);
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  170  }
^1da177e4c3f41 drivers/acpi/hardware/hwsleep.c Linus Torvalds             2005-04-16  171  

:::::: The code at line 119 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@ppc970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@ppc970.osdl.org>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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2021-05-13  9:25 [intel-tdx:guest 47/63] drivers/acpi/acpica/hwsleep.c:119:25: warning: suggest braces around empty body in an 'if' statement kernel test robot

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