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platform/x86: ISST: Add missing write block check

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If writes are blocked, then return error during SST-CP enable command.
Add missing write block check in this code path.

Fixes: 8bed9ff7db ("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>
This commit is contained in:
Srinivas Pandruvada 2026-01-06 22:02:55 -08:00 committed by Ilpo Järvinen
parent c4a0690953
commit 0e5aef2795
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GPG Key ID: 59AC4F6153E5CE31
1 changed files with 3 additions and 0 deletions
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3
drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.c
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@ -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,