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| author | NeilBrown <neilb@suse.de> | 2007-02-28 20:11:12 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-03-01 14:53:36 -0800 |
| commit | 5a243e0e97edce27c12f87354fd987526ba1ce95 (patch) | |
| tree | 25911ba3555cefaab804a607988763fe28f6770c /drivers/block/umem.c | |
| parent | 9540f75b2bcfcc29ddcd839c3547a5f380bef323 (diff) | |
| download | lwn-5a243e0e97edce27c12f87354fd987526ba1ce95.tar.gz lwn-5a243e0e97edce27c12f87354fd987526ba1ce95.zip | |
[PATCH] Fix failure paths in modules init in umem.c
If register_blkdev() or alloc-disk fail in mm_init() after
pci_register_driver() succeeds, then mm_pci_driver is not unregistered
properly:
Cc: Philip Guo <pg@cs.stanford.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/block/umem.c')
| -rw-r--r-- | drivers/block/umem.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/block/umem.c b/drivers/block/umem.c index dff3766f117f..5872036e8ae6 100644 --- a/drivers/block/umem.c +++ b/drivers/block/umem.c @@ -1179,8 +1179,10 @@ static int __init mm_init(void) return -ENOMEM; err = major_nr = register_blkdev(0, "umem"); - if (err < 0) + if (err < 0) { + pci_unregister_driver(&mm_pci_driver); return -EIO; + } for (i = 0; i < num_cards; i++) { mm_gendisk[i] = alloc_disk(1 << MM_SHIFT); @@ -1207,6 +1209,7 @@ static int __init mm_init(void) return 0; out: + pci_unregister_driver(&mm_pci_driver); unregister_blkdev(major_nr, "umem"); while (i--) put_disk(mm_gendisk[i]); |