From 5a243e0e97edce27c12f87354fd987526ba1ce95 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Wed, 28 Feb 2007 20:11:12 -0800 Subject: [PATCH] [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 Signed-off-by: Neil Brown Cc: Jens Axboe Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/block/umem.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) 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]); -- 2.20.1