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| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2009-06-15 22:13:45 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2009-06-15 22:13:45 +0200 |
| commit | a9c415090710a108edcd81b3392b90396f190a9a (patch) | |
| tree | d8e8848f695af1f3f7620f96e93431a8a76c40f3 /drivers/ide/ide-ioctls.c | |
| parent | 5bfb151f1f565e6082304a30e8c81dfb6ed0b0c8 (diff) | |
| download | linux-3.10-a9c415090710a108edcd81b3392b90396f190a9a.tar.gz linux-3.10-a9c415090710a108edcd81b3392b90396f190a9a.tar.bz2 linux-3.10-a9c415090710a108edcd81b3392b90396f190a9a.zip | |
ide: filter out invalid DMA xfer mode changes in HDIO_DRIVE_CMD ioctl handler
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/ide-ioctls.c')
| -rw-r--r-- | drivers/ide/ide-ioctls.c | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/drivers/ide/ide-ioctls.c b/drivers/ide/ide-ioctls.c index 5991b23793f..82f252c3ee6 100644 --- a/drivers/ide/ide-ioctls.c +++ b/drivers/ide/ide-ioctls.c @@ -118,7 +118,6 @@ static int ide_cmd_ioctl(ide_drive_t *drive, unsigned long arg) u8 args[4], xfer_rate = 0; struct ide_cmd cmd; struct ide_taskfile *tf = &cmd.tf; - u16 *id = drive->id; if (NULL == (void *) arg) { struct request *rq; @@ -161,14 +160,10 @@ static int ide_cmd_ioctl(ide_drive_t *drive, unsigned long arg) if (tf->command == ATA_CMD_SET_FEATURES && tf->feature == SETFEATURES_XFER && - tf->nsect >= XFER_SW_DMA_0 && - (id[ATA_ID_UDMA_MODES] || - id[ATA_ID_MWDMA_MODES] || - id[ATA_ID_SWDMA_MODES])) { - xfer_rate = args[1]; - if (tf->nsect > XFER_UDMA_2 && !eighty_ninty_three(drive)) { - printk(KERN_WARNING "%s: UDMA speeds >UDMA33 cannot " - "be set\n", drive->name); + tf->nsect >= XFER_SW_DMA_0) { + xfer_rate = ide_find_dma_mode(drive, XFER_UDMA_6); + if (xfer_rate != tf->nsect) { + err = -EINVAL; goto abort; } } |