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-rw-r--r--drivers/usb/misc/vstusb.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/misc/vstusb.c b/drivers/usb/misc/vstusb.c
index 63dff9ba73c..f26ea8dc157 100644
--- a/drivers/usb/misc/vstusb.c
+++ b/drivers/usb/misc/vstusb.c
@@ -401,6 +401,7 @@ static ssize_t vstusb_write(struct file *file, const char __user *buffer,
}
if (copy_from_user(buf, buffer, count)) {
+ mutex_unlock(&vstdev->lock);
dev_err(&dev->dev, "%s: can't copy_from_user\n", __func__);
retval = -EFAULT;
goto exit;