diff options
| author | Borislav Petkov <petkovbb@gmail.com> | 2009-03-13 21:16:12 +0100 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2009-03-13 21:16:12 +0100 |
| commit | 3eb76c1ccde496c3c0bfda23d1c803e40b762ce6 (patch) | |
| tree | 2a1524a72a5005c512d4f45696d7cde964f7f457 | |
| parent | 041b62374c7fedc11a8a1eeda2868612d3d1436c (diff) | |
| download | systemsim-3eb76c1ccde496c3c0bfda23d1c803e40b762ce6.tar.gz | |
ide-floppy: do not map dataless cmds to an sg
since it fails the virt_to_page() translation check with DEBUG_VIRTUAL
enabled.
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
[bart: backport to Linus' tree]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| -rw-r--r-- | drivers/ide/ide-atapi.c | 12 | ||||
| -rw-r--r-- | drivers/ide/ide-floppy.c | 6 |
2 files changed, 16 insertions, 2 deletions
diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c index e96c0126059827..e9d042dba0e075 100644 --- a/drivers/ide/ide-atapi.c +++ b/drivers/ide/ide-atapi.c @@ -140,6 +140,12 @@ static void ide_queue_pc_head(ide_drive_t *drive, struct gendisk *disk, rq->cmd_flags |= REQ_PREEMPT; rq->buffer = (char *)pc; rq->rq_disk = disk; + + if (pc->req_xfer) { + rq->data = pc->buf; + rq->data_len = pc->req_xfer; + } + memcpy(rq->cmd, pc->c, 12); if (drive->media == ide_tape) rq->cmd[13] = REQ_IDETAPE_PC1; @@ -159,6 +165,12 @@ int ide_queue_pc_tail(ide_drive_t *drive, struct gendisk *disk, rq = blk_get_request(drive->queue, READ, __GFP_WAIT); rq->cmd_type = REQ_TYPE_SPECIAL; rq->buffer = (char *)pc; + + if (pc->req_xfer) { + rq->data = pc->buf; + rq->data_len = pc->req_xfer; + } + memcpy(rq->cmd, pc->c, 12); if (drive->media == ide_tape) rq->cmd[13] = REQ_IDETAPE_PC1; diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c index 3eab1c6c9b3149..317ec62c33d424 100644 --- a/drivers/ide/ide-floppy.c +++ b/drivers/ide/ide-floppy.c @@ -327,8 +327,10 @@ static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive, return ide_stopped; } - ide_init_sg_cmd(drive, rq); - ide_map_sg(drive, rq); + if (blk_fs_request(rq) || pc->req_xfer) { + ide_init_sg_cmd(drive, rq); + ide_map_sg(drive, rq); + } pc->sg = hwif->sg_table; pc->sg_cnt = hwif->sg_nents; |