Hi Sean, Could you help check the patch set? With your suggestions, I have cooked a patch to exit stop mode during probe stage. IMHO, I think this patch is unneed, now in flexcan driver, enter stop mode when suspend, and then exit stop mode when resume. AFAIK, as long as flexcan_suspend has been called, flexcan_resume will be called, unless the system hang during suspend/resume. If so, only code reset can activate OS again. Could you please tell me how does CAN stucked in stop mode at your side? If indeed need, Why not check it in flexcan_open? Once we find CAN is stuckd in stop mode, users can down->up CAN interface to get out of stop mode. I think this could be more reasonable. Joakim Zhang Joakim Zhang (3): can: flexcan: try to exit stop mode during probe stage can: flexcan: change the way of stop mode acknowledgment can: flexcan: add LPSR mode support Sean Nyekjaer (1): can: flexcan: fix deadlock when using self wakeup drivers/net/can/flexcan.c | 132 +++++++++++++++++++++++--------------- 1 file changed, 80 insertions(+), 52 deletions(-) -- 2.17.1