Messages in this thread |  | | Subject | Re: [PATCH v3] sh: avoid using IRQ0 on SH3/4 | From | Sergey Shtylyov <> | Date | Sun, 1 May 2022 21:09:24 +0300 |
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On 5/1/22 8:58 PM, Sergey Shtylyov wrote: [...] >>>> Using IRQ0 by the platform devices is going to be disallowed soon (see [1]) >>>> and even now, when IRQ0 is about to be returned by platfrom_get_irq(), you >>>> see a big warning. The code supporting SH3/4 SoCs maps the IRQ #s starting >>>> at 0 -- modify that code to start the IRQ #s from 16 instead. >>>> >>>> The patch should mostly affect the AP-SH4A-3A/AP-SH4AD-0A boards as they >>>> indeed use IRQ0 for the SMSC911x compatible Ethernet chip... >>> >>> Maybe try getting it landed through Andrew Morton's tree? >> >> Hi. I'm alive and looking at it. If it needs to go in for this cycle I >> will send a pull request for just this and anything else critical. Was > > Well, now using IRQ0 just causes a WARNing in platform_get_irq() -- I don't > think fixing it is critical enough. Starting from 5.19-rc1 the SMSC91xx driver > should stop working on the mentioned boards. > But let me look at the SMSC driver itself, I haven't done this yet...
Looks like these boards were borked back in 2015 by this commit:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=965b2aa78fbcb831acf4f669f494da201f4bcace
It stopped accepting IRQ0 for no apparent reason. :-/
[...]
>> Rich
MBR, Sergey
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