zd1211rw: remove URB_SHORT_NOT_OK flag in zd_usb_iowrite16v_async()

Patch removes the bogus flag introduced by upstream commit
eefdbec1ea8b7093d2c09d1825f68438701723cf. Old code had buffer length check
that new code tried to handle with URB_SHORT_NOT_OK flag. With USB debugging
enabled bogus flag caused usb_submit_urb fail.

Remove URB_SHORT_NOT_OK flag and add buffer length check to urb completion
handler.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=32092
Reported-by: Jonathan Callen <abcd@gentoo.org>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/net/wireless/zd1211rw/zd_usb.c b/drivers/net/wireless/zd1211rw/zd_usb.c
index 58236e6d0921..9b1a26a4435b 100644
--- a/drivers/net/wireless/zd1211rw/zd_usb.c
+++ b/drivers/net/wireless/zd1211rw/zd_usb.c
@@ -1671,6 +1671,10 @@ static void iowrite16v_urb_complete(struct urb *urb)
 
         if (urb->status && !usb->cmd_error)
                 usb->cmd_error = urb->status;
+
+        if (!usb->cmd_error &&
+                        urb->actual_length != urb->transfer_buffer_length)
+                usb->cmd_error = -EIO;
 }
 
 static int zd_submit_waiting_urb(struct zd_usb *usb, bool last)
@@ -1805,7 +1809,7 @@ int zd_usb_iowrite16v_async(struct zd_usb *usb, const struct zd_ioreq16 *ioreqs,
         usb_fill_int_urb(urb, udev, usb_sndintpipe(udev, EP_REGS_OUT),
                          req, req_len, iowrite16v_urb_complete, usb,
                          ep->desc.bInterval);
-        urb->transfer_flags |= URB_FREE_BUFFER | URB_SHORT_NOT_OK;
+        urb->transfer_flags |= URB_FREE_BUFFER;
 
         /* Submit previous URB */
         r = zd_submit_waiting_urb(usb, false);