From nobody Mon Feb 9 00:01:11 2026 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.8]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B4AF633122E; Mon, 29 Dec 2025 18:34:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.8 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767033300; cv=none; b=M5mYlOsJkhWwpbQqQP+raZ1zNpvuJtopFR3V9dUqGCD6cpnxG7IS+VTs+4W4DB5cUwJMeyW55zy3IPJRww46KGmXv3K6LarnEO4VqROKodecPkbKoq3FoQbC+VRpRIYYcAUKF38+FEPEPi21FCOE/kPeva9ry7yeAD/CLqRB4Uc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767033300; c=relaxed/simple; bh=VLsmDFWtMsuAsB/lyKJEUjtf1LGGqwugmcXpvfUHRzk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=G9HkcJHfocqZvVuKLVSkCV+6LCyIWcx0wrxhwErQbj8h578BHjV/xnYj0PAQDAc/VPpkF3zi2YUysp1nUFFC6YoK681T98VLdxbRrvMghAkwsXyvUZXdw1agM4xnLetNXTzCcWJyCVHupK+cMjMcrz1YyeRWqN+Fi0WhjNcIugs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=OuiJeaZU; arc=none smtp.client-ip=192.198.163.8 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="OuiJeaZU" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1767033299; x=1798569299; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=VLsmDFWtMsuAsB/lyKJEUjtf1LGGqwugmcXpvfUHRzk=; b=OuiJeaZUYGDQYbWOiY1Ho8PE0KTO32uehn5q8FFQQ5XiQZOIUDYPeAAC i7BkRaStElYt2Wwn7JhON1Lv19zgysNd4VT3WT+XfmWHa7TnDI8QRPpY8 ZvpQjdPMJnfT7mINOUKpQvJPOleh5XbGPdli4TSyHZkO40aI08FBB1w0T AydkLdmocObt654angL46Ah43QUuREcJTEmPdSX1MH/1jkwzt3XQPjq6R ty6fRpAJpjELwYevGR65EyJGURpgxSjiDSmMl1B/hutZJMSpyLBlofTnY 2o+/j6hq94aWC6AlxdqLxD9q4EPEWp7SMNF9nVrQ/JyTaTg1NH3zROfrn w==; X-CSE-ConnectionGUID: PvnjQcG+Qf+hxt7cqGStEw== X-CSE-MsgGUID: DzoPtNWGQcqCAcnJ++IwsQ== X-IronPort-AV: E=McAfee;i="6800,10657,11656"; a="86218720" X-IronPort-AV: E=Sophos;i="6.21,186,1763452800"; d="scan'208";a="86218720" Received: from orviesa003.jf.intel.com ([10.64.159.143]) by fmvoesa102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Dec 2025 10:34:56 -0800 X-CSE-ConnectionGUID: x54Y5Sq7RE+0kJ6Fhi2ZJA== X-CSE-MsgGUID: egmceNQ6RR2YXqvL3YN4dQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,186,1763452800"; d="scan'208";a="205120425" Received: from spandruv-desk.jf.intel.com ([10.54.55.20]) by orviesa003.jf.intel.com with ESMTP; 29 Dec 2025 10:34:56 -0800 From: Srinivas Pandruvada To: hansg@kernel.org, ilpo.jarvinen@linux.intel.com Cc: platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org, Srinivas Pandruvada , stable@vger.kernel.org Subject: [PATCH 1/2] platform/x86: ISST: Add missing write block check Date: Mon, 29 Dec 2025 10:34:49 -0800 Message-ID: <20251229183450.823244-2-srinivas.pandruvada@linux.intel.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251229183450.823244-1-srinivas.pandruvada@linux.intel.com> References: <20251229183450.823244-1-srinivas.pandruvada@linux.intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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 featur= e status") Signed-off-by: Srinivas Pandruvada Cc: --- drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.c | 3 +++ 1 file changed, 3 insertions(+) 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; =20 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, --=20 2.52.0