Re: [PATCH 1/2] wifi: ath11k: Use platform_get_irq() to get the interrupt

[Jonas Gorski]

On Tue, 24 Jan 2023 at 20:05, Douglas Anderson <dianders@xxxxxxxxxxxx> wrote:
>
> For the same reasons talked about in commit 9503a1fc123d ("ath9k: Use
> platform_get_irq() to get the interrupt"), we should be using
> platform_get_irq() in ath11k. Let's make the switch.
>
> Without this change, WiFi wasn't coming up on my Qualcomm sc7280-based
> hardware. Specifically, "platform_get_resource(pdev, IORESOURCE_IRQ,
> i)" was failing even for i=0. Digging into the platform device there
> truly were no IRQs present in the list of resources when the call was
> made.
>
> I didn't dig into what changed between 5.15 (where
> platform_get_resource() seems to work) and mainline Linux (where it
> doesn't). Given the zeal robot report for ath9k I assume it's a known
> issue. I'll mark this as "fixing" the patch that introduced the
> platform_get_resource() call since it should have always been fine to
> just call platform_get_irq() and that'll make sure it goes back as far
> as it needs to go.

Since I recently stumbled upon this in a different (external) driver,
it's likely a1a2b7125e10 ("of/platform: Drop static setup of IRQ
resource from DT core").

Regards
Jonas