USB: legousbtower: drop redundant open_count check

Drop redundant open_count check in release; the open count is used as a
flag and is only set to 0 or 1.

Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20191105084152.16322-5-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/misc/legousbtower.c b/drivers/usb/misc/legousbtower.c
index c880d58..1626a0d 100644 (file)
--- a/drivers/usb/misc/legousbtower.c
+++ b/drivers/usb/misc/legousbtower.c
@@ -421,13 +421,6 @@ static int tower_release (struct inode *inode, struct file *file)
 
        mutex_lock(&dev->lock);
 
-       if (dev->open_count != 1) {
-               dev_dbg(&dev->udev->dev, "%s: device not opened exactly once\n",
-                       __func__);
-               retval = -ENODEV;
-               goto unlock_exit;
-       }
-
        if (dev->disconnected) {
                /* the device was unplugged before the file was released */
 
@@ -444,7 +437,6 @@ static int tower_release (struct inode *inode, struct file *file)
        tower_abort_transfers (dev);
        dev->open_count = 0;
 
-unlock_exit:
        mutex_unlock(&dev->lock);
 exit:
        return retval;