From: Anton Vorontsov <avorontsov@ru.mvista.com>
Date: Thu, 25 Dec 2008 14:15:14 +0000 (+0300)
Subject: USB: fsl_qe_udc: Fix stalled TX requests bug
X-Git-Tag: v2.6.29-rc5~45^2~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=af3ddbd76304f9f602c970f9b09a0c9d8cf8336c;p=pandora-kernel.git

USB: fsl_qe_udc: Fix stalled TX requests bug

While disabling an endpoint the driver nuking any pending requests,
thus completing them with -ESHUTDOWN status. But the driver doesn't
clear the tx_req, which means that a next TX request (after
ep_enable), might get stalled, since the driver won't queue the new
reqests.

This patch fixes a bug I'm observing with ethernet gadget while
playing with ifconfig usb0 up/down (the up/down sequence disables
and enables `in' and `out' endpoints).

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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