From: Markus Pargmann <mpa@pengutronix.de>
Date: Mon, 28 Oct 2013 08:54:40 +0000 (+0100)
Subject: can: c_can: Fix RX message handling, handle lost message before EOB
X-Git-Tag: v3.2.54~165
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e8edf57cb72b8d90d495ad78306daf9c9763ea5c;p=pandora-kernel.git

can: c_can: Fix RX message handling, handle lost message before EOB

commit 5d0f801a2ccec3b1fdabc3392c8d99ed0413d216 upstream.

If we handle end of block messages with higher priority than a lost message,
we can run into an endless interrupt loop.

This is reproducable with a am335x processor and "cansequence -r" at 1Mbit.
As soon as we loose a packet we can't escape from an interrupt loop.

This patch fixes the problem by handling lost packets before EOB packets.

Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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