From 9e772d0135a5b5f8355320be429efa339700d52d Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Mon, 2 Feb 2009 20:12:21 +0100 Subject: [PATCH] ide-cd: fix DMA for non bio-backed requests This one fixes http://bugzilla.kernel.org/show_bug.cgi?id=12320. Signed-off-by: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- 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 cae69372cf4..0bfeb0c79d6 100644 --- a/drivers/ide/ide-cd.c +++ b/drivers/ide/ide-cd.c @@ -787,6 +787,9 @@ 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 cc163319dfb..9ee51adf567 100644 --- a/drivers/ide/ide-io.c +++ b/drivers/ide/ide-io.c @@ -418,11 +418,14 @@ 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); } } -- 2.41.1