cpufreq/amd-pstate: Add static asserts for EPP indices

[ Upstream commit 077f23573d29d063a950e90aa77c8e1f79580147 ]

In case a new index is introduced add a static assert to make sure
that strings and values are updated.

Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
Stable-dep-of: caa822d312be ("cpufreq/amd-pstate: Use "epp_default_dc" as default when dynamic_epp is disabled")
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c
index 0d58291a133d64d06c12769b4707c77115a0a59e..10727eb0914fa441b3c523132bfa60f734382f87 100644 (file)
--- a/drivers/cpufreq/amd-pstate.c
+++ b/drivers/cpufreq/amd-pstate.c
@@ -116,6 +116,7 @@ enum energy_perf_value_index {
        EPP_INDEX_BALANCE_PERFORMANCE,
        EPP_INDEX_BALANCE_POWERSAVE,
        EPP_INDEX_POWERSAVE,
+       EPP_INDEX_MAX,
 };
 
 static const char * const energy_perf_strings[] = {
@@ -125,6 +126,7 @@ static const char * const energy_perf_strings[] = {
        [EPP_INDEX_BALANCE_POWERSAVE] = "balance_power",
        [EPP_INDEX_POWERSAVE] = "power",
 };
+static_assert(ARRAY_SIZE(energy_perf_strings) == EPP_INDEX_MAX);
 
 static unsigned int epp_values[] = {
        [EPP_INDEX_DEFAULT] = 0,
@@ -133,6 +135,7 @@ static unsigned int epp_values[] = {
        [EPP_INDEX_BALANCE_POWERSAVE] = AMD_CPPC_EPP_BALANCE_POWERSAVE,
        [EPP_INDEX_POWERSAVE] = AMD_CPPC_EPP_POWERSAVE,
 };
+static_assert(ARRAY_SIZE(epp_values) == EPP_INDEX_MAX);
 
 typedef int (*cppc_mode_transition_fn)(int);