diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-08-20 18:20:50 -0500 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-08-20 18:20:50 -0500 |
| commit | be816bc491d8ead54b345990bdb8f69d6036cb08 (patch) | |
| tree | 9d7ed1cd7558690cf6ef048bc420221599ca6256 | |
| parent | 480cadc2b7e0fa2bbab20141efb547dfe0c3707c (diff) | |
| parent | f6105c0808880c2c432b79bc81b37cc244c300c8 (diff) | |
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"These are the two bug fixes I mentioned in the final merge window
pull. One is a reversed logic check in the device busy tests which
can cause a nasty hang and another crash seen in the new SCSI pool
support if the use count ever goes to zero"
[ The device busy test already got merged from a patch earlier, so is
now duplicated. ]
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
[SCSI] save command pool address of Scsi_Host
[SCSI] fix qemu boot hang problem
| -rw-r--r-- | drivers/scsi/scsi.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index df3306019a7e..d81f3cc43ff1 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -377,6 +377,10 @@ scsi_alloc_host_cmd_pool(struct Scsi_Host *shost) pool->slab_flags |= SLAB_CACHE_DMA; pool->gfp_mask = __GFP_DMA; } + + if (hostt->cmd_size) + hostt->cmd_pool = pool; + return pool; } @@ -421,8 +425,10 @@ out: out_free_slab: kmem_cache_destroy(pool->cmd_slab); out_free_pool: - if (hostt->cmd_size) + if (hostt->cmd_size) { scsi_free_host_cmd_pool(pool); + hostt->cmd_pool = NULL; + } goto out; } @@ -444,8 +450,10 @@ static void scsi_put_host_cmd_pool(struct Scsi_Host *shost) if (!--pool->users) { kmem_cache_destroy(pool->cmd_slab); kmem_cache_destroy(pool->sense_slab); - if (hostt->cmd_size) + if (hostt->cmd_size) { scsi_free_host_cmd_pool(pool); + hostt->cmd_pool = NULL; + } } mutex_unlock(&host_cmd_pool_mutex); } |