From: Martin Fuzzey <mfuzzey@gmail.com>
Date: Thu, 30 Sep 2010 22:20:48 +0000 (+0200)
Subject: USB: usbtest - ensure correct isoc data length
X-Git-Tag: v2.6.37-rc1~154^2~51
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=40aed5241e4e5363c11acc841f6ef794b2c25668;p=profile%2Fivi%2Fkernel-adaptation-intel-automotive.git

USB: usbtest - ensure correct isoc data length

Check the data length of isochronous transfers is
as expected.

With this test #16 will now fail if the device side
sends no data.

Signed-off-by: Martin Fuzzey <mfuzzey@gmail.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c
index bb078eb..a35b427 100644
--- a/drivers/usb/misc/usbtest.c
+++ b/drivers/usb/misc/usbtest.c
@@ -1371,6 +1371,8 @@ static void iso_callback(struct urb *urb)
 		ctx->errors += urb->error_count;
 	else if (urb->status != 0)
 		ctx->errors += urb->number_of_packets;
+	else if (urb->actual_length != urb->transfer_buffer_length)
+		ctx->errors++;
 
 	if (urb->status == 0 && ctx->count > (ctx->pending - 1)
 			&& !ctx->submit_error) {