diff options
| author | Asai Thambi S P <asamymuthupa@micron.com> | 2013-01-11 14:17:12 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2013-01-11 14:35:58 +0100 |
| commit | 58c49df378cde4ff64172483d593a1a5689c13a8 (patch) | |
| tree | 561681531660ae0f29ecc286cf921ab48ee11f2a /drivers/block/mtip32xx | |
| parent | mtip32xx: fix for driver hang after a command timeout (diff) | |
| download | linux-58c49df378cde4ff64172483d593a1a5689c13a8.tar.xz linux-58c49df378cde4ff64172483d593a1a5689c13a8.zip | |
mtip32xx: fix for crash when the device surprise removed during rebuild
When rebuild is in progress, disk->queue is yet to be created. Surprise
removing the device will call remove()-> del_gendisk(). del_gendisk()
expect disk->queue be not NULL. Fix is to call put_disk() when disk_queue
is NULL.
Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/block/mtip32xx')
| -rw-r--r-- | drivers/block/mtip32xx/mtip32xx.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c index b93282019632..3fd100990453 100644 --- a/drivers/block/mtip32xx/mtip32xx.c +++ b/drivers/block/mtip32xx/mtip32xx.c @@ -3888,7 +3888,12 @@ static int mtip_block_remove(struct driver_data *dd) * Delete our gendisk structure. This also removes the device * from /dev */ - del_gendisk(dd->disk); + if (dd->disk) { + if (dd->disk->queue) + del_gendisk(dd->disk); + else + put_disk(dd->disk); + } spin_lock(&rssd_index_lock); ida_remove(&rssd_index_ida, dd->index); @@ -3922,7 +3927,13 @@ static int mtip_block_shutdown(struct driver_data *dd) "Shutting down %s ...\n", dd->disk->disk_name); /* Delete our gendisk structure, and cleanup the blk queue. */ - del_gendisk(dd->disk); + if (dd->disk) { + if (dd->disk->queue) + del_gendisk(dd->disk); + else + put_disk(dd->disk); + } + spin_lock(&rssd_index_lock); ida_remove(&rssd_index_ida, dd->index); |