Unverified Commit 0e5aef27 authored by Srinivas Pandruvada's avatar Srinivas Pandruvada Committed by Ilpo Järvinen
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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: 8bed9ff7 ("platform/x86: ISST: Process read/write blocked feature status")
Signed-off-by: default avatarSrinivas 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: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
parent c4a06909

drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.c

+3 −0
Original line number Diff line number Diff line
@@ -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,