From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shaun Tancheff Subject: [PATCH v6 4/4] SCT Write Same handle ATA_DFLAG_PIO Date: Sun, 21 Aug 2016 23:23:21 -0500 Message-ID: <20160822042321.24367-5-shaun@tancheff.com> References: <20160822042321.24367-1-shaun@tancheff.com> Return-path: Received: from mail-it0-f67.google.com ([209.85.214.67]:33758 "EHLO mail-it0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751541AbcHVEZK (ORCPT ); Mon, 22 Aug 2016 00:25:10 -0400 In-Reply-To: <20160822042321.24367-1-shaun@tancheff.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Shaun Tancheff , Tejun Heo , Christoph Hellwig , Tom Yan , "Martin K . Petersen" , Damien Le Moal , Hannes Reinecke , Josh Bingaman , Hannes Reinecke , Shaun Tancheff Use non DMA write log when ATA_DFLAG_PIO is set. Signed-off-by: Shaun Tancheff --- v6: Added check for ATA_DFLAG_PIO and fallback to non DMA write log for SCT Write Same drivers/ata/libata-scsi.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 37f456e..e50b7a7 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -3485,6 +3485,8 @@ static unsigned int ata_scsi_write_same_xlat(struct ata_queued_cmd *qc) tf->device = ATA_CMD_STANDBYNOW1; tf->protocol = ATA_PROT_DMA; tf->command = ATA_CMD_WRITE_LOG_DMA_EXT; + if (unlikely(dev->flags & ATA_DFLAG_PIO)) + tf->command = ATA_CMD_WRITE_LOG_EXT; } tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48 | -- 2.9.3