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| author |   Jens Axboe <axboe@kernel.dk> | 2019-03-18 08:10:32 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-03-18 08:10:32 -0600 |
| commit | 81b74ac68c28fddb3589ad5d4d5e587baf4bb781 (patch) | |
| tree | 79c66628783124bbb51cd4815801080f0fffaa09 | |
| parent | paride/pf: cleanup queues when detection fails (diff) | |
| download | linux-dev-81b74ac68c28fddb3589ad5d4d5e587baf4bb781.tar.xz linux-dev-81b74ac68c28fddb3589ad5d4d5e587baf4bb781.zip | |
paride/pcd: cleanup queues when detection fails
The driver allocates queues for all the units it potentially
supports. But if we fail to detect any drives, then we fail
loading the module without cleaning up those queues. This is
now evident with the switch to blk-mq, though the bug has
been there forever as far as I can tell.
Also fix cleanup through regular module exit.
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | drivers/block/paride/pcd.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/block/paride/pcd.c b/drivers/block/paride/pcd.c index 96670eefaeb2..377a694dc228 100644 --- a/drivers/block/paride/pcd.c +++ b/drivers/block/paride/pcd.c @@ -749,8 +749,12 @@ static int pcd_detect(void) return 0; printk("%s: No CD-ROM drive found\n", name); - for (unit = 0, cd = pcd; unit < PCD_UNITS; unit++, cd++) + for (unit = 0, cd = pcd; unit < PCD_UNITS; unit++, cd++) { + blk_cleanup_queue(cd->disk->queue); + cd->disk->queue = NULL; + blk_mq_free_tag_set(&cd->tag_set); put_disk(cd->disk); + } pi_unregister_driver(par_drv); return -1; } |