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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2007-07-17 12:20:46 +0200
committerJens Axboe <jens.axboe@oracle.com>2007-07-17 12:20:46 +0200
commit9b9f770cef0037fd0e4d623f31ddfa8acda38205 (patch)
treea0b8937223df1e5a519375d1fa797157b4a930a2 /block
parent5cdf7f7678493996a835ef2e627976de8f9d1f40 (diff)
downloadlinux-linaro-9b9f770cef0037fd0e4d623f31ddfa8acda38205.tar.gz
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 <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block')
-rw-r--r--block/bsg.c38
1 files changed, 18 insertions, 20 deletions
diff --git a/block/bsg.c b/block/bsg.c
index cdb00e5544b..b25378459ff 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");