On Mon, Apr 24, 2023 at 08:03:42PM +0800, Dongliang Mu wrote: > On 2023/4/24 19:48, Mark Brown wrote: > > Is that check valid? 0 was a valid interrupt for some architectures... > We just follow the comments of platform_get_irq(). > * Gets an IRQ for a platform device and prints an error message if finding > the > * IRQ fails. Device drivers should check the return value for errors so as > to > * not pass a negative integer value to the request_irq() APIs. I'm not sure that's universally true yet, though there were some moves to try to get us there. arm, where this driver is used, was one of the platforms with 0 as a valid interrupt.
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