patch "uio: fix wrong return value from uio_mmap()" added to char-misc-testing

This is a note to let you know that I've just added the patch titled

uio: fix wrong return value from uio_mmap()

to my char-misc git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git
in the char-misc-testing branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will be merged to the char-misc-next branch sometime soon, after it passes testing, and the merge window is open.

If you have any questions about this process, please let me know.

From: Hailong Liu <[email protected]>
Date: Fri, 20 Jul 2018 08:31:56 +0800
Subject: uio: fix wrong return value from uio_mmap()

uio_mmap has multiple fail paths to set return value to nonzero then goto out. However, it always returns *0* from the *out* at end, and this will mislead callers who check the return value of this function.

---
 drivers/uio/uio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

index f63967c8e95a..144cf7365288 100644
@@ -813,7 +813,7 @@ static int uio_mmap(struct file *filep, struct vm_area_struct *vma)
 
 out:
 	mutex_unlock(&idev->info_lock);
-	return 0;
+	return ret;
 }
 
 static const struct file_operations uio_fops = {

2.18.0