can: flexcan: fix stop mode acknowledgment

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To enter stop mode, the CPU should manually assert a global Stop Mode
request and check the acknowledgment asserted by FlexCAN. The CPU must
only consider the FlexCAN in stop mode when both request and
acknowledgment conditions are satisfied.

Fixes: de3578c198 ("can: flexcan: add self wakeup support")
Reported-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Cc: linux-stable <stable@vger.kernel.org> # >= v5.0
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

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Joakim Zhang 2019-07-02 01:45:41 +00:00 • committed by Marc Kleine-Budde

parent e9f2a856e1

commit 5f186c257f

1 changed files with 27 additions and 4 deletions

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31

drivers/net/can/flexcan.c

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