On 22.02.2022 17:41:54, Michael Anochin wrote: > > > You're missing a "netif_wake_queue done" here. There's probably an > > interrupt associated with this event. Add a print if that IRQ is active > > right after reading the IRQ status register > > Done, only on enter in m_can_isr "m_can_isr: ir=", not exit. > > If there are a RX traffic on but, the latchup happens very quickly. I just looked again at your overlay. Please change the IRQ type to IRQ_TYPE_LEVEL_LOW. With edge falling you'll miss interrupts sooner or later. regards, Marc BTW: it's documented as level low in the bindings documentation: | interrupts = <14 IRQ_TYPE_LEVEL_LOW>; -- Pengutronix e.K. | Marc Kleine-Budde | Embedded Linux | https://www.pengutronix.de | Vertretung West/Dortmund | Phone: +49-231-2826-924 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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