linux-kernel - Re: [PATCH] pinctrl: qcom: Return -EINVAL for setting affinity if no IRQ parent

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Date:   Sun, 16 Jan 2022 13:02:38 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Cc:     bjorn.andersson@...aro.org, dianders@...omium.org,
        linux-arm-msm@...r.kernel.org, linux-gpio@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] pinctrl: qcom: Return -EINVAL for setting affinity if no
 IRQ parent

On Thu, Jan 13, 2022 at 5:26 PM Manivannan Sadhasivam
<manivannan.sadhasivam@...aro.org> wrote:

> The MSM GPIO IRQ controller relies on the parent IRQ controller to set the
> CPU affinity for the IRQ. And this is only valid if there is any wakeup
> parent available and defined in DT.
>
> For the case of no parent IRQ controller defined in DT,
> msm_gpio_irq_set_affinity() and msm_gpio_irq_set_vcpu_affinity() should
> return -EINVAL instead of 0 as the affinity can't be set.
>
> Otherwise, below warning will be printed by genirq:
>
> genirq: irq_chip msmgpio did not update eff. affinity mask of irq 70
>
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>

Patch applied for v5.18!

Yours,
Linus Walleij