github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-09-25 17:42:03 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

platform/x86: ISST: Validate parameter for core power state

Browse Source 
Allow only 0 or 1 for core_power enable and priority_type parameters.

Fixes: 12a7d2cb81 ("platform/x86: ISST: Add SST-CP support via TPMI")
Cc: stable@vger.kernel.org
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://patch.msgid.link/20260811221514.3905817-4-srinivas.pandruvada@linux.intel.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
Srinivas Pandruvada 2026-08-11 15:15:11 -07:00 committed by Ilpo Järvinen
parent e45d6b8472
commit 1700b4f804
No known key found for this signature in database
GPG Key ID: 59AC4F6153E5CE31
1 changed files with 7 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.c
View File

@ -599,6 +599,9 @@ static bool disable_dynamic_sst_features(void)
#define SST_CP_PRIORITY_TYPE_START 1
#define SST_CP_PRIORITY_TYPE_WIDTH 1
#define SST_CP_MAX_ENABLE 1
#define SST_CP_MAX_PRIORITY_TYPE 1
static long isst_if_core_power_state(void __user *argp)
{
struct tpmi_per_power_domain_info *power_domain_info;
@ -618,6 +621,10 @@ static long isst_if_core_power_state(void __user *argp)
if (power_domain_info->write_blocked || !capable(CAP_SYS_ADMIN))
return -EPERM;
if (core_power.enable > SST_CP_MAX_ENABLE ||
core_power.priority_type > SST_CP_MAX_PRIORITY_TYPE)
return -EINVAL;
_write_cp_info("cp_enable", core_power.enable, SST_CP_CONTROL_OFFSET,
SST_CP_ENABLE_START, SST_CP_ENABLE_WIDTH, SST_MUL_FACTOR_NONE)
_write_cp_info("cp_prio_type", core_power.priority_type, SST_CP_CONTROL_OFFSET,