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| author | Marc Kleine-Budde <mkl@pengutronix.de> | 2025-08-12 17:58:31 +0300 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2025-10-08 11:19:02 +0300 |
| commit | a9e30a22d6f23a2684c248871cad4c3061181639 (patch) | |
| tree | 455a088f16c93d361cee60df264d17927f666801 /drivers/cdx/controller/cdx_controller.c | |
| parent | 4942c42fe1849e6d68dfb5b36ccba344a9fac016 (diff) | |
| download | linux-a9e30a22d6f23a2684c248871cad4c3061181639.tar.xz | |
can: m_can: fix CAN state in system PM
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: e0d1f4816f2a ("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>
Diffstat (limited to 'drivers/cdx/controller/cdx_controller.c')
0 files changed, 0 insertions, 0 deletions