Marc Kleine-Budde 7ed47a3207 can: m_can: fix CAN state in system PM ...

[ Upstream commit a9e30a22d6 ]

A suspend/resume cycle on a down interface results in the interface
coming up in Error Active state. A suspend/resume cycle on an Up
interface will always result in Error Active state, regardless of the
actual CAN state.

During suspend, only set running interfaces to CAN_STATE_SLEEPING.
During resume only touch the CAN state of running interfaces. For
wakeup sources, set the CAN state depending on the Protocol Status
Regitser (PSR), for non wakeup source interfaces m_can_start() will do
the same.

Fixes: e0d1f4816f ("can: m_can: add Bosch M_CAN controller support")
Reviewed-by: Markus Schneider-Pargmann <msp@baylibre.com>
Link: https://patch.msgid.link/20250929-m_can-fix-state-handling-v4-4-682b49b49d9a@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2025-10-23 16:20:28 +02:00

..

Kconfig

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m_can_pci.c

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m_can_platform.c

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m_can.c

can: m_can: fix CAN state in system PM

2025-10-23 16:20:28 +02:00

m_can.h

can: m_can: add deinit callback

2025-10-23 16:20:28 +02:00

Makefile

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tcan4x5x-core.c

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tcan4x5x-regmap.c

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tcan4x5x.h

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