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cpufreq/amd-pstate: Make amd_pstate_get_mode_string() never return NULL

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amd_pstate_get_mode_string() is only used by amd-pstate-ut.  Set the
failure path to use AMD_PSTATE_UNDEFINED ("undefined") to avoid showing
"(null)" as a string when running test suite.

Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
This commit is contained in:
Mario Limonciello (AMD)
2025-10-09 11:17:53 -05:00
parent 06791bc017
commit baf106f3a7
1 changed files with 2 additions and 2 deletions
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4
drivers/cpufreq/amd-pstate.c
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@@ -70,8 +70,8 @@ static_assert(ARRAY_SIZE(amd_pstate_mode_string) == AMD_PSTATE_MAX);
const char *amd_pstate_get_mode_string(enum amd_pstate_mode mode)
{
if (mode < 0 || mode >= AMD_PSTATE_MAX)
return NULL;
if (mode < AMD_PSTATE_UNDEFINED || mode >= AMD_PSTATE_MAX)
mode = AMD_PSTATE_UNDEFINED;
return amd_pstate_mode_string[mode];
}
EXPORT_SYMBOL_GPL(amd_pstate_get_mode_string);