From patchwork Thu Apr 14 13:07:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 562357 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 8A533C433F5 for ; Thu, 14 Apr 2022 13:50:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344056AbiDNNvg (ORCPT ); Thu, 14 Apr 2022 09:51:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43974 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343509AbiDNNjD (ORCPT ); Thu, 14 Apr 2022 09:39:03 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 85E79120; Thu, 14 Apr 2022 06:34:18 -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 ams.source.kernel.org (Postfix) with ESMTPS id 36286B8296A; Thu, 14 Apr 2022 13:34:17 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 777BBC385A9; Thu, 14 Apr 2022 13:34:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1649943255; bh=yjLGCQhLuR2ENNIxQCgjWECgQ0+Ex0Sw31OCB8GOKWc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZuN+BJTxmFtteXgzNsCQXyVHt8VfUNMXjqJy9ONemfHz/u8NXyGqM49OV2p6SuUKT yMmLumua8ElJH1J/g0Ffh43KbC7WdHST2PaDPNvIGn9bENqZZzW51EcK6VyflgH1/r oKu1yDI2ZlIs02bvtgQX/msD6tLQAMNE+aZZ0g8g= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, John Garry , Jack Wang , Damien Le Moal , "Martin K. Petersen" Subject: [PATCH 5.4 050/475] scsi: libsas: Fix sas_ata_qc_issue() handling of NCQ NON DATA commands Date: Thu, 14 Apr 2022 15:07:15 +0200 Message-Id: <20220414110856.555771728@linuxfoundation.org> X-Mailer: git-send-email 2.35.2 In-Reply-To: <20220414110855.141582785@linuxfoundation.org> References: <20220414110855.141582785@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Damien Le Moal commit 8454563e4c2aafbfb81a383ab423ea8b9b430a25 upstream. To detect for the DMA_NONE (no data transfer) DMA direction, sas_ata_qc_issue() tests if the command protocol is ATA_PROT_NODATA. This test does not include the ATA_CMD_NCQ_NON_DATA command as this command protocol is defined as ATA_PROT_NCQ_NODATA (equal to ATA_PROT_FLAG_NCQ) and not as ATA_PROT_NODATA. To include both NCQ and non-NCQ commands when testing for the DMA_NONE DMA direction, use "!ata_is_data()". Link: https://lore.kernel.org/r/20220220031810.738362-2-damien.lemoal@opensource.wdc.com Fixes: 176ddd89171d ("scsi: libsas: Reset num_scatter if libata marks qc as NODATA") Cc: stable@vger.kernel.org Reviewed-by: John Garry Reviewed-by: Jack Wang Signed-off-by: Damien Le Moal Signed-off-by: Martin K. Petersen Signed-off-by: Greg Kroah-Hartman --- drivers/scsi/libsas/sas_ata.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/scsi/libsas/sas_ata.c +++ b/drivers/scsi/libsas/sas_ata.c @@ -201,7 +201,7 @@ static unsigned int sas_ata_qc_issue(str task->total_xfer_len = qc->nbytes; task->num_scatter = qc->n_elem; task->data_dir = qc->dma_dir; - } else if (qc->tf.protocol == ATA_PROT_NODATA) { + } else if (!ata_is_data(qc->tf.protocol)) { task->data_dir = DMA_NONE; } else { for_each_sg(qc->sg, sg, qc->n_elem, si)