diff options
| author | Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> | 2026-08-11 15:15:10 -0700 |
|---|---|---|
| committer | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2026-08-18 17:30:16 +0300 |
| commit | e45d6b8472861d3bac86bb37f8556a7c5aca3266 (patch) | |
| tree | dabd016d4ceb785f252eac522557291fb0957e65 /drivers/platform/x86 | |
| parent | 124e2dbabe460c2a6e7440f4ad8af560131295c9 (diff) | |
platform/x86: ISST: Validate max level for set feature
Validate the level before setting, so that it fails early instead of
failing later when checking the bit mask for allowed levels.
Fixes: ea009e4769fa3 ("platform/x86: ISST: Add SST-PP support via TPMI")
Cc: stable@vger.kernel.org
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://patch.msgid.link/20260811221514.3905817-3-srinivas.pandruvada@linux.intel.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Diffstat (limited to 'drivers/platform/x86')
| -rw-r--r-- | drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.c b/drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.c index a5ab3be92afa..7be50d4167be 100644 --- a/drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.c +++ b/drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.c @@ -947,6 +947,9 @@ static int isst_if_set_perf_level(void __user *argp) if (!power_domain_info) return -EINVAL; + if (perf_level.level > power_domain_info->max_level) + return -EINVAL; + if (power_domain_info->write_blocked || !capable(CAP_SYS_ADMIN)) return -EPERM; |