Re: [PATCH v2 2/2] cpufreq: amd-pstate: change cpu freq transition delay for some models

[kernel test robot]

Hi Xiaojian,

kernel test robot noticed the following build warnings:

[auto build test WARNING on tip/master]
[also build test WARNING on rafael-pm/linux-next rafael-pm/bleeding-edge linus/master next-20240522]
[cannot apply to tip/x86/core tip/auto-latest v6.9]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Xiaojian-Du/cpufreq-amd-pstate-change-cpu-freq-transition-delay-for-some-models/20240522-135241
base:   tip/master
patch link:    https://lore.kernel.org/r/b2c8fb2da41f9fb21f095f67d99cbdbd0aa34091.1716356681.git.Xiaojian.Du%40amd.com
patch subject: [PATCH v2 2/2] cpufreq: amd-pstate: change cpu freq transition delay for some models
config: x86_64-randconfig-006-20240522 (https://download.01.org/0day-ci/archive/20240523/202405230325.UPlOikDm-lkp@xxxxxxxxx/config)
compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240523/202405230325.UPlOikDm-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202405230325.UPlOikDm-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

>> drivers/cpufreq/amd-pstate.c:824:3: warning: add explicit braces to avoid dangling else [-Wdangling-else]
     824 |                 else
         |                 ^
   1 warning generated.


vim +824 drivers/cpufreq/amd-pstate.c

   811	
   812	/*
   813	 * Get pstate transition delay time from ACPI tables that firmware set
   814	 * instead of using hardcode value directly.
   815	 */
   816	static u32 amd_pstate_get_transition_delay_us(unsigned int cpu)
   817	{
   818		u32 transition_delay_ns;
   819	
   820		transition_delay_ns = cppc_get_transition_latency(cpu);
   821		if (transition_delay_ns == CPUFREQ_ETERNAL)
   822			if (cpu_feature_enabled(X86_FEATURE_FAST_CPPC))
   823				return AMD_PSTATE_FAST_CPPC_TRANSITION_DELAY;
 > 824			else
   825				return AMD_PSTATE_TRANSITION_DELAY;
   826	
   827		return transition_delay_ns / NSEC_PER_USEC;
   828	}
   829	

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