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uio: remove redundant check

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

Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chengguang Xu 2019-01-19 21:15:34 +08:00 committed by Greg Kroah-Hartman
parent 1e09cdd506
commit 54557665a4
1 changed files with 2 additions and 2 deletions
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4
drivers/uio/uio.c
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@ -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;
}