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, 2 insertions, 4 deletions

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);