lkml.org 
[lkml]   [2021]   [Oct]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] chardev: fix error handling in cdev_device_add()
Date
If dev->devt is not set, cdev_device_add() will not add the cdev,
when device_add failed, cdev_del() is not needed, so delete cdev
only when dev->devt is set.

Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: 233ed09d7fda ("chardev: add helper function to register...")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
---
fs/char_dev.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/char_dev.c b/fs/char_dev.c
index ba0ded7842a7..3f667292608c 100644
--- a/fs/char_dev.c
+++ b/fs/char_dev.c
@@ -547,7 +547,7 @@ int cdev_device_add(struct cdev *cdev, struct device *dev)
}

rc = device_add(dev);
- if (rc)
+ if (rc && dev->devt)
cdev_del(cdev);

return rc;
--
2.25.1
\
 
 \ /
  Last update: 2021-10-12 15:02    [W:0.067 / U:0.216 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site