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| author |   Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2009-06-15 22:16:10 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2009-06-15 22:16:10 +0200 |
| commit | 2c7eaa43c3bb7b3b9fe2051d17f308c1f0728c78 (patch) | |
| tree | 1b359598ea212bf7036bcc018186e0a8f20ac5f4 /drivers/ide | |
| parent | ide: filter out invalid DMA xfer mode changes in HDIO_DRIVE_CMD ioctl handler (diff) | |
| download | linux-dev-2c7eaa43c3bb7b3b9fe2051d17f308c1f0728c78.tar.xz linux-dev-2c7eaa43c3bb7b3b9fe2051d17f308c1f0728c78.zip | |
ide: BUG() on unknown requests
Unsupported requests should be never handed down to device drivers
and the best thing we can do upon discovering such request inside
driver's ->do_request method is to just BUG().
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide')
| -rw-r--r-- | drivers/ide/ide-cd.c | 8 | ||||
| -rw-r--r-- | drivers/ide/ide-disk.c | 9 | ||||
| -rw-r--r-- | drivers/ide/ide-floppy.c | 6 | ||||
| -rw-r--r-- | drivers/ide/ide-tape.c | 10 |
4 files changed, 6 insertions, 27 deletions
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c index dcd72445b0cd..0b7645b13df1 100644 --- a/drivers/ide/ide-cd.c +++ b/drivers/ide/ide-cd.c @@ -785,12 +785,8 @@ static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq, /* right now this can only be a reset... */ uptodate = 1; goto out_end; - } else { - blk_dump_rq_flags(rq, DRV_NAME " bad flags"); - if (rq->errors == 0) - rq->errors = -EIO; - goto out_end; - } + } else + BUG(); /* prepare sense request for this command */ ide_prep_sense(drive, rq); diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c index 6a1de2169709..695181120cdb 100644 --- a/drivers/ide/ide-disk.c +++ b/drivers/ide/ide-disk.c @@ -184,14 +184,7 @@ static ide_startstop_t ide_do_rw_disk(ide_drive_t *drive, struct request *rq, ide_hwif_t *hwif = drive->hwif; BUG_ON(drive->dev_flags & IDE_DFLAG_BLOCKED); - - if (!blk_fs_request(rq)) { - blk_dump_rq_flags(rq, "ide_do_rw_disk - bad command"); - if (rq->errors == 0) - rq->errors = -EIO; - ide_complete_rq(drive, -EIO, ide_rq_bytes(rq)); - return ide_stopped; - } + BUG_ON(!blk_fs_request(rq)); ledtrig_ide_activity(); diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c index 800c83a9db83..8b3f204f7d73 100644 --- a/drivers/ide/ide-floppy.c +++ b/drivers/ide/ide-floppy.c @@ -269,10 +269,8 @@ static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive, } else if (blk_pc_request(rq)) { pc = &floppy->queued_pc; idefloppy_blockpc_cmd(floppy, pc, rq); - } else { - blk_dump_rq_flags(rq, PFX "unsupported command in queue"); - goto out_end; - } + } else + BUG(); ide_prep_sense(drive, rq); diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 3a3f10f3f8fe..013dc595fab6 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -586,15 +586,7 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive, debug_log(DBG_SENSE, "sector: %llu, nr_sectors: %u\n" (unsigned long long)blk_rq_pos(rq), blk_rq_sectors(rq)); - if (!(blk_special_request(rq) || blk_sense_request(rq))) { - /* We do not support buffer cache originated requests. */ - printk(KERN_NOTICE "ide-tape: %s: Unsupported request in " - "request queue (%d)\n", drive->name, rq->cmd_type); - if (blk_fs_request(rq) == 0 && rq->errors == 0) - rq->errors = -EIO; - ide_complete_rq(drive, -EIO, ide_rq_bytes(rq)); - return ide_stopped; - } + BUG_ON(!(blk_special_request(rq) || blk_sense_request(rq))); /* Retry a failed packet command */ if (drive->failed_pc && drive->pc->c[0] == REQUEST_SENSE) { |