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can: at91_can: RX queue could get stuck at high bus load
authorWolfgang Grandegger <wg@grandegger.com>
Mon, 13 Jun 2016 13:44:19 +0000 (15:44 +0200)
committerMarc Kleine-Budde <mkl@pengutronix.de>
Mon, 20 Jun 2016 07:32:40 +0000 (09:32 +0200)
commit43200a4480cbbe660309621817f54cbb93907108
tree1334834bf844d7544a169d25ccef8c4cc21d4bb5tree | snapshot
parent427460c83cdf55069eee49799a0caef7dde8df69commit | diff
can: at91_can: RX queue could get stuck at high bus load

At high bus load it could happen that "at91_poll()" enters with all RX
message boxes filled up. If then at the end the "quota" is exceeded as
well, "rx_next" will not be reset to the first RX mailbox and hence the
interrupts remain disabled.

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Tested-by: Amr Bekhit <amrbekhit@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
drivers/net/can/at91_can.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git