[OpenWrt-Devel] kernel: bump 4.19 to 4.19.72 broke ath79

[Magnus Kroken]

Hi Andre

On 14.09.2019 10:49, Andre Valentin wrote:
> It seems the kernel bump broke ath79 compilation. The problem lies in
> target/linux/ath79/patches-4.19/0028-MIPS-ath79-drop-machfiles.patch
> 
> It cannot be applied anymore. I tried a quick fix, but there seems to be a bigger change.

The culprit isn't the kernel update, but this commit:
00d48bcac0 ar71xx: Fix potentially missed IRQ handling during dispatch

Koen (or anyone else), can you shed some light on this one? I mostly 
poke at kernel patches until something happens, I don't really 
understand hardware/kernel well. Some things jump out:

1. The commit message is labeled ar71xx, but the patch is applied to the 
generic target. It patches kernel files that IIUC are used by both ath79 
and ar71xx targets.
2. It modifies arch/mips/ath79/irq.c. The patch that fails on ath79, 
0027-MIPS-ath79-drop-legacy-IRQ-code, deletes this file completely 
(which now fails, as the file content is changed by 
343-MIPS-ath79-Fix-potentially-missed-IRQ-handling-durin.patch).

> Kind regards,
> 
> André

Regards,
Magnus Kroken

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