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>

1 files changed, 1 insertions, 9 deletions

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) {