From mboxrd@z Thu Jan 1 00:00:00 1970 From: Borislav Petkov Subject: [PATCH 3/3] ide-cd: fix DMA for non bio-backed requests Date: Mon, 26 Jan 2009 21:40:40 +0100 Message-ID: <1233002440-4325-3-git-send-email-petkovbb@gmail.com> References: <1233002440-4325-1-git-send-email-petkovbb@gmail.com> Return-path: Received: from fg-out-1718.google.com ([72.14.220.155]:49604 "EHLO fg-out-1718.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752950AbZAZUkr (ORCPT ); Mon, 26 Jan 2009 15:40:47 -0500 In-Reply-To: <1233002440-4325-1-git-send-email-petkovbb@gmail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: bzolnier@gmail.com Cc: linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org, Borislav Petkov This one fixes http://bugzilla.kernel.org/show_bug.cgi?id=12320. Signed-off-by: Borislav Petkov --- drivers/ide/ide-cd.c | 3 +++ drivers/ide/ide-io.c | 9 ++++++--- 2 files changed, 9 insertions(+), 3 deletions(-) diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c index 94981f9..84bc370 100644 --- a/drivers/ide/ide-cd.c +++ b/drivers/ide/ide-cd.c @@ -784,6 +784,9 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive) if (blk_fs_request(rq)) { ide_end_request(drive, 1, rq->nr_sectors); return ide_stopped; + } else if (rq->cmd_type == REQ_TYPE_ATA_PC && !rq->bio) { + ide_end_request(drive, 1, 1); + return ide_stopped; } goto end_request; } diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c index 9927b03..615b6e7 100644 --- a/drivers/ide/ide-io.c +++ b/drivers/ide/ide-io.c @@ -291,11 +291,14 @@ void ide_map_sg(ide_drive_t *drive, struct request *rq) ide_hwif_t *hwif = drive->hwif; struct scatterlist *sg = hwif->sg_table; - if (rq->cmd_type != REQ_TYPE_ATA_TASKFILE) { - hwif->sg_nents = blk_rq_map_sg(drive->queue, rq, sg); - } else { + if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { sg_init_one(sg, rq->buffer, rq->nr_sectors * SECTOR_SIZE); hwif->sg_nents = 1; + } else if (!rq->bio) { + sg_init_one(sg, rq->data, rq->data_len); + hwif->sg_nents = 1; + } else { + hwif->sg_nents = blk_rq_map_sg(drive->queue, rq, sg); } } -- 1.6.0.4