From nobody Thu Apr 2 23:54:52 2026 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) (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 4F7CC221FB1; Wed, 25 Mar 2026 19:30:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.19 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774467053; cv=none; b=lvrNwcRsojCQ9g+wjQrB57h4sScam4JimOxfRrf4Mc9TdH98ls0SuvUM25j2cErM6Tq7ujCBh3lBXtc6g1C0n8FhsDIeZOq3+KpA4PyZ9Th50kWJauhBALlnafCWeagpoeWVoF7UaRvqeQPUwBqoM9dVaJxkjaA7AgBaDXpMOQ0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774467053; c=relaxed/simple; bh=ESzOlrHkLo+z38r1hwoVAsm1lcpzRuevpjM4P2xWRXM=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=g13H8+cw5JPjryIQkPhQeJefvv9VAq7ZNPMMMu4dfi1gZQU+attmp/v9nwvO2GruKL5nqrzaq1VmafshqE5a7Lg48FCz4+pz3ZbbQbeV7au0KUCJ739xB2xT74fR8xS8MTC7t9qyjCEJ/dnnsJKfHmtprnQmlRRe4wbjQAuB7BI= 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=ClHxHVuf; arc=none smtp.client-ip=198.175.65.19 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="ClHxHVuf" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1774467053; x=1806003053; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=ESzOlrHkLo+z38r1hwoVAsm1lcpzRuevpjM4P2xWRXM=; b=ClHxHVufkJXAkT5D1GU9dEfMoL4njq4i8OZKiedkKQ4XVfllEt/UAYTD kEg4oWiRdVVYefzSRuCqjJtQJFVZlSt3w1W2B4kNaAh7/aT44Z8goMIhs 7r5iRnCmkXHy14wLtQncLVBgDJyIT6ayJ9GJBVMNSU9Il3fRkV0iM37zN MCuWgyVuQQ4HNmHR4vPHqMqjDKQO++vceESXepHCpzeaktxnHK9qv9JBy 4pWikejgAOcod8mfcItGW2bzUjf3CpUqNq+Mv3UYLcl/plxHFGe3E+ZSI WPDgxdef54rS6EWUKgBuL+EFGurpLHK8Tzt2Uk6Vc/NeOXog01MhzYY3R Q==; X-CSE-ConnectionGUID: a4Gu/4+tTt+Sucp6LxUwQw== X-CSE-MsgGUID: fZ2ogJUzS1CshGlLuUXq1Q== X-IronPort-AV: E=McAfee;i="6800,10657,11740"; a="75403459" X-IronPort-AV: E=Sophos;i="6.23,140,1770624000"; d="scan'208";a="75403459" Received: from orviesa003.jf.intel.com ([10.64.159.143]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Mar 2026 12:30:52 -0700 X-CSE-ConnectionGUID: 1w9RTSVxSsGkgVM1vVTxEQ== X-CSE-MsgGUID: zSWI48xoTxyjQ/YGxFqiBg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,140,1770624000"; d="scan'208";a="228844396" Received: from spandruv-desk.jf.intel.com ([10.54.55.20]) by orviesa003.jf.intel.com with ESMTP; 25 Mar 2026 12:30:52 -0700 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 Subject: [PATCH] platform/x86/intel/tpmi: Use 32 bit aligned address for debugfs mem write Date: Wed, 25 Mar 2026 12:30:48 -0700 Message-ID: <20260325193048.3417349-1-srinivas.pandruvada@linux.intel.com> X-Mailer: git-send-email 2.52.0 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" The memory write feature supports 32-bit writes to any TPMI offset. However, future hardware generations may not allow writes to non-32-bit aligned addresses due to hardware optimizations. Since all TPMI addresses are 64-bit aligned and correspond to 64-bit registers, enforce 32-bit alignment for write operations. Signed-off-by: Srinivas Pandruvada --- drivers/platform/x86/intel/vsec_tpmi.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/platform/x86/intel/vsec_tpmi.c b/drivers/platform/x86/= intel/vsec_tpmi.c index 98846e88d3d0..b70232d8ba58 100644 --- a/drivers/platform/x86/intel/vsec_tpmi.c +++ b/drivers/platform/x86/intel/vsec_tpmi.c @@ -479,6 +479,9 @@ static ssize_t mem_write(struct file *file, const char = __user *userbuf, size_t l addr =3D array[2]; value =3D array[3]; =20 + if (addr % sizeof(u32)) + return -EINVAL; + if (punit >=3D pfs->pfs_header.num_entries) { ret =3D -EINVAL; goto exit_write; --=20 2.52.0