From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 23 Aug 2011 08:44:54 +0000 (+0200)
Subject: USB: usbtest: use URB_ZERO_PACKET for BULK-OUT transfers
X-Git-Tag: v3.2-rc1~183^2~179^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7c79d094358326132693279bfb22e4f8454cc652;p=pandora-kernel.git

USB: usbtest: use URB_ZERO_PACKET for BULK-OUT transfers

Executing
| testusb -a -c 1 -t 3 -v 421 -s 2048

does not complete on the gadget side.
g_zero enqueues a 4096 bytes long buffer. The host sends 2048bytes which
is a multiple of wMaxPacketSize (either 64 or 512 bytes). The host is
done with sending data but the gadget waits for more.
Since the protocol does not include transfer-length-field sending a
terminating zero packet seems the only way out.

Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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