[PATCH v2 6/6] cpufreq/amd-pstate: Add static asserts for EPP indices

Mario Limonciello (AMD)
2025-10-09T16:18:09Z

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

Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
---
drivers/cpufreq/amd-pstate.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c
index a0f21ac1205af..b3dad7cde46f0 100644
--- a/drivers/cpufreq/amd-pstate.c
+++ b/drivers/cpufreq/amd-pstate.c
@@ -110,6 +110,7 @@ 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[] = {
@@ -119,6 +120,7 @@ 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,
@@ -127,6 +129,7 @@ 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);

--
2.43.0