Commit 54557665 authored by Chengguang Xu's avatar Chengguang Xu Committed by Greg Kroah-Hartman
Browse files

uio: remove redundant check 



It is not necessary to check idev->info several times under
mutex lock, so just remove redundant check.

Signed-off-by: default avatarChengguang Xu <cgxu519@gmx.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 1e09cdd5

drivers/uio/uio.c

+2 −2
Original line number Diff line number Diff line
@@ -494,7 +494,7 @@ static int uio_open(struct inode *inode, struct file *filep) 
		goto err_infoopen;

	}



	if (idev->info && idev->info->open)

	if (idev->info->open)

		ret = idev->info->open(idev->info, inode);

	mutex_unlock(&idev->info_lock);

	if (ret)
@@ -635,7 +635,7 @@ static ssize_t uio_write(struct file *filep, const char __user *buf, 
		goto out;

	}



	if (!idev->info || !idev->info->irq) {

	if (!idev->info->irq) {

		retval = -EIO;

		goto out;

	}