USB: core: drop short-transfer check from usb_control_msg_send()

A failure to send a complete control message is always an error so
there's no need to check for short transfers in usb_control_msg_send().

Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20201204085110.20055-3-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index c4e8760..0d8f75e 100644 (file)
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -219,9 +219,8 @@ int usb_control_msg_send(struct usb_device *dev, __u8 endpoint, __u8 request,
 
        if (ret < 0)
                return ret;
-       if (ret == size)
-               return 0;
-       return -EINVAL;
+
+       return 0;
 }
 EXPORT_SYMBOL_GPL(usb_control_msg_send);