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can: sun4i: handle overrun in RX FIFO
authorGerhard Bertelsmann <info@gerhard-bertelsmann.de>
Mon, 6 Nov 2017 17:16:56 +0000 (18:16 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 15 Nov 2017 14:53:20 +0000 (15:53 +0100)
commitf45c1b09261b1f02019e422846e2545ea61ce89d
treed4d0e2b0c59b7d9d4efa63249150b837ec9681fbtree | snapshot
parentbad4c8f1bc25970895aee312c93130cff7cdcf0fcommit | diff
can: sun4i: handle overrun in RX FIFO

commit 4dcf924c2eda0c47a5c53b7703e3dc65ddaa8920 upstream.

SUN4Is CAN IP has a 64 byte deep FIFO buffer. If the buffer is not
drained fast enough (overrun) it's getting mangled. Already received
frames are dropped - the data can't be restored.

Signed-off-by: Gerhard Bertelsmann <info@gerhard-bertelsmann.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/net/can/sun4i_can.c diff | blob | history
wrapfs-5.3.y