linux-kernel - Re: [PATCH v3] pinctrl: ocelot: Fix interrupt controller

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Date:   Tue, 20 Sep 2022 16:25:06 +0200
From:   Michael Walle <michael@...le.cc>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     horatiu.vultur@...rochip.com, UNGLinuxDriver@...rochip.com,
        andy.shevchenko@...il.com, linux-gpio@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] pinctrl: ocelot: Fix interrupt controller

Am 2022-09-20 14:34, schrieb Michael Walle:
> Am 2022-09-20 14:28, schrieb Linus Walleij:

>> Just checking: since these drivers obviously must pass pass
>> IRQF_SHARED, have you also made sure that each driver also
>> will properly return IRQ_HANDLED if the interrupt was for them
>> (triggered by "their" hardware) but IRQ_NONE if the interrupt was
>> not for them (triggered by something else)?
> 
> Thanks, I'll check it.

The gpy driver seems to handle that correctly. The micrel one introduced
a regression some time ago. I've send a fix in the meantime [1], but it
doesn't help for the multiple interrupts here.

-michael

[1] 
https://lore.kernel.org/netdev/20220920141619.808117-1-michael@walle.cc/