diff options
| author | Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> | 2026-01-06 22:02:55 -0800 |
|---|---|---|
| committer | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2026-01-13 16:31:28 +0200 |
| commit | 0e5aef2795008c80c515f6fa04e377c6e5715958 (patch) | |
| tree | 04d2d326b3cebbf172adfa774b611de66bce4db4 /drivers/platform | |
| parent | c4a069095395ecd1e936f488511dfd9016b9c479 (diff) | |
platform/x86: ISST: Add missing write block check
If writes are blocked, then return error during SST-CP enable command.
Add missing write block check in this code path.
Fixes: 8bed9ff7dbcc ("platform/x86: ISST: Process read/write blocked feature status")
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260107060256.1634188-2-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')
| -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 34bff2f65a83..f587709ddd47 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 @@ -612,6 +612,9 @@ static long isst_if_core_power_state(void __user *argp) return -EINVAL; if (core_power.get_set) { + if (power_domain_info->write_blocked) + return -EPERM; + _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, |