lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

ide: BUG() on unknown requests

Browse Source 
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>
This commit is contained in:
Bartlomiej Zolnierkiewicz
2009-06-15 22:16:10 +02:00
parent a9c4150907
commit 2c7eaa43c3
4 changed files with 6 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/ide/ide-tape.c
View File

@@ -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) {