usb: usbtest: add pattern check on pipe in phase of unlink read

TEST 11 unlinks the URB read request for N times. When host and gadget both initialize pattern 1 (mod 63) data series to do IN transfer, the host side function should check the data buffer if it is as mod 63 series, because the data packet which host receivced will follow pattern 1. So this patch adds this checking action. Signed-off-by: Huang Rui <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
AnTAVR · May 27, 2014 · a7683eb · a7683eb
1 parent e4d58f5
commit a7683eb
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c
@@ -1345,6 +1345,9 @@ static int unlink1(struct usbtest_dev *dev, int pipe, int size, int async)
 		while (!completion_done(&completion)) {
 			retval = usb_unlink_urb(urb);
 
+			if (retval == 0 && usb_pipein(urb->pipe))
+				retval = simple_check_buf(dev, urb);
+
 			switch (retval) {
 			case -EBUSY:
 			case -EIDRM: