Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9b9f770cef0037fd0e4d623f31ddfa8acda38205
Commit: 9b9f770cef0037fd0e4d623f31ddfa8acda38205
Parent: 5cdf7f7678493996a835ef2e627976de8f9d1f40
Author: FUJITA Tomonori <[EMAIL PROTECTED]>
AuthorDate: Tue Jul 17 12:20:46 2007 +0200
Committer: Jens Axboe <[EMAIL PROTECTED]>
CommitDate: Tue Jul 17 12:20:46 2007 +0200
bsg: fix initialization error handling bugs
This fixes the following bugs and cleans up the initialization code:
- cdev_del is missing.
- unregister_chrdev_region should be used instead of unregister_chrdev.
Signed-off-by: FUJITA Tomonori <[EMAIL PROTECTED]>
Signed-off-by: Jens Axboe <[EMAIL PROTECTED]>
---
block/bsg.c | 38 ++++++++++++++++++--------------------
1 files changed, 18 insertions(+), 20 deletions(-)
diff --git a/block/bsg.c b/block/bsg.c
index cdb00e5..b253784 100644
--- a/block/bsg.c
+++ b/block/bsg.c
@@ -1057,39 +1057,37 @@ static int __init bsg_init(void)
bsg_class = class_create(THIS_MODULE, "bsg");
if (IS_ERR(bsg_class)) {
- kmem_cache_destroy(bsg_cmd_cachep);
- return PTR_ERR(bsg_class);
+ ret = PTR_ERR(bsg_class);
+ goto destroy_kmemcache;
}
ret = alloc_chrdev_region(&devid, 0, BSG_MAX_DEVS, "bsg");
- if (ret) {
- kmem_cache_destroy(bsg_cmd_cachep);
- class_destroy(bsg_class);
- return ret;
- }
+ if (ret)
+ goto destroy_bsg_class;
bsg_major = MAJOR(devid);
cdev_init(&bsg_cdev, &bsg_fops);
ret = cdev_add(&bsg_cdev, MKDEV(bsg_major, 0), BSG_MAX_DEVS);
- if (ret) {
- kmem_cache_destroy(bsg_cmd_cachep);
- class_destroy(bsg_class);
- unregister_chrdev_region(MKDEV(bsg_major, 0), BSG_MAX_DEVS);
- return ret;
- }
+ if (ret)
+ goto unregister_chrdev;
ret = scsi_register_interface(&bsg_intf);
- if (ret) {
- printk(KERN_ERR "bsg: failed register scsi interface %d\n",
ret);
- kmem_cache_destroy(bsg_cmd_cachep);
- class_destroy(bsg_class);
- unregister_chrdev(bsg_major, "bsg");
- return ret;
- }
+ if (ret)
+ goto remove_cdev;
printk(KERN_INFO "%s loaded (major %d)\n", bsg_version, bsg_major);
return 0;
+remove_cdev:
+ printk(KERN_ERR "bsg: failed register scsi interface %d\n", ret);
+ cdev_del(&bsg_cdev);
+unregister_chrdev:
+ unregister_chrdev_region(MKDEV(bsg_major, 0), BSG_MAX_DEVS);
+destroy_bsg_class:
+ class_destroy(bsg_class);
+destroy_kmemcache:
+ kmem_cache_destroy(bsg_cmd_cachep);
+ return ret;
}
MODULE_AUTHOR("Jens Axboe");
-
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