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| author | Chengguang Xu <cgxu519@gmx.com> | 2019-01-19 21:15:34 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-22 12:03:16 +0100 |
| commit | 54557665a4e776a1affa132faea87bc60c452617 (patch) | |
| tree | e32e9ff590e6d59e5f8bb07918a74b0818a2c253 /drivers/uio | |
| parent | 1e09cdd506c8833a9d52cb61009798660cff4051 (diff) | |
| download | lwn-54557665a4e776a1affa132faea87bc60c452617.tar.gz lwn-54557665a4e776a1affa132faea87bc60c452617.zip | |
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: Chengguang Xu <cgxu519@gmx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/uio')
| -rw-r--r-- | drivers/uio/uio.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c index 46e5c1c31ebe..effe72834c2f 100644 --- a/drivers/uio/uio.c +++ b/drivers/uio/uio.c @@ -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; } |