From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C4C98C28B2C for ; Mon, 15 Aug 2022 22:21:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1348108AbiHOWUo (ORCPT ); Mon, 15 Aug 2022 18:20:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53756 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348414AbiHOWQe (ORCPT ); Mon, 15 Aug 2022 18:16:34 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BCBEF187; Mon, 15 Aug 2022 12:40:14 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 198A46120F; Mon, 15 Aug 2022 19:40:11 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E7C35C433C1; Mon, 15 Aug 2022 19:40:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1660592410; bh=zEedom811/5se5b7aljK1JSNDPwuR5xYRPX2z+nxSlI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=oMD68ho6muDHyvmR6eydvC9SCZjDe7zLJF7riNjsg+bs62gzGgqJgircLknZ+D0vt 1M1svI/tOxn4UD/5j+wNqo93Sx/Yggz+FsQDQVkovhGtKQ5H12LYcPMf83frAuBYeS 9TfI1bBeWI95qVldJp5TGO1fNHF6pqDGSwcsxzX4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Himanshu Madhani , Bikash Hazarika , Quinn Tran , Nilesh Javali , "Martin K. Petersen" Subject: [PATCH 5.19 0106/1157] scsi: qla2xxx: Zero undefined mailbox IN registers Date: Mon, 15 Aug 2022 19:51:02 +0200 Message-Id: <20220815180443.874381492@linuxfoundation.org> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220815180439.416659447@linuxfoundation.org> References: <20220815180439.416659447@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Bikash Hazarika commit 6c96a3c7d49593ef15805f5e497601c87695abc9 upstream. While requesting a new mailbox command, driver does not write any data to unused registers. Initialize the unused register value to zero while requesting a new mailbox command to prevent stale entry access by firmware. Link: https://lore.kernel.org/r/20220713052045.10683-4-njavali@marvell.com Cc: stable@vger.kernel.org Reviewed-by: Himanshu Madhani Signed-off-by: Bikash Hazarika Signed-off-by: Quinn Tran Signed-off-by: Nilesh Javali Signed-off-by: Martin K. Petersen Signed-off-by: Greg Kroah-Hartman --- drivers/scsi/qla2xxx/qla_mbx.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/scsi/qla2xxx/qla_mbx.c +++ b/drivers/scsi/qla2xxx/qla_mbx.c @@ -238,6 +238,8 @@ qla2x00_mailbox_command(scsi_qla_host_t ql_dbg(ql_dbg_mbx, vha, 0x1112, "mbox[%d]<-0x%04x\n", cnt, *iptr); wrt_reg_word(optr, *iptr); + } else { + wrt_reg_word(optr, 0); } mboxes >>= 1;