Re: [PATCH net-next 0/4] can: don't discard the platform_get_irq() error in probe

[Jakub Kicinski]

On Fri, 16 Oct 2026 14:11:35 +0800 Chaosheng Qu wrote:
> Four CAN platform drivers collapse every failure of platform_get_irq()
> into a fixed error code:
> 
>     sun4i_can    -ENODEV
>     at91_can     -ENODEV  (also tests irq <= 0, which cannot happen)
>     janz-ican3   -ENODEV
>     ifi_canfd    -EINVAL
> 
> sun4i_can, at91_can and ifi_canfd match through an of_match_table, so
> of_irq_get() returns -EPROBE_DEFER while the interrupt controller has not
> been probed. The probes overwrite it and the driver core stops retrying,
> leaving the device unbound even though the interrupt controller appears
> later.

Please don't CC netdev@ on run-of-the-mill CAN patches.
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