On 22.02.2022 17:02:14, Michael Anochin wrote: > > Still any error messages? > No BUG-Message with <0x0 0 0 16 0 0 1 1>. At least that is positive. > > But no other Messages in in kbuf. Simply no netif_wake_queue fires. After > that no TX possible. But RX is working. This is good. \o/ | [ 763.651277] tcan4x5x spi6.0 can2: m_can_isr: netif_wake_queue done | [ 763.651295] tcan4x5x spi6.0 can2: m_can_start_xmit netif_stop_queue done | [ 763.651462] tcan4x5x spi6.0 can2: m_can_tx_handler m_can_tx_fifo_full | [ 763.652163] tcan4x5x spi6.0 can2: m_can_isr: netif_wake_queue done | [ 763.652182] tcan4x5x spi6.0 can2: m_can_start_xmit netif_stop_queue done | [ 763.652352] tcan4x5x spi6.0 can2: m_can_tx_handler m_can_tx_fifo_full 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. Marc -- 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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