linux-kernel - Re: [PATCH] mailbox: qcom-ipcc: Use generic_handle_irq

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Message-ID: <YyBP+eNIBCN0OsGt@linutronix.de>
Date:   Tue, 13 Sep 2022 11:40:09 +0200
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     Eric Chanudet <echanude@...hat.com>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Manivannan Sadhasivam <mani@...nel.org>,
        Jassi Brar <jassisinghbrar@...il.com>,
        linux-arm-msm@...r.kernel.org, linux-rt-users@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mailbox: qcom-ipcc: Use generic_handle_irq_safe()

On 2022-09-09 12:20:43 [-0400], Eric Chanudet wrote:
> PREEMPT_RT forces qcom-ipcc's handler to be threaded with interrupts
> enabled, which triggers a warning in __handle_irq_event_percpu().
> 
> Use generic_handle_irq_safe() that can be called with or without
> interrupts enabled instead.

wouldn't IRQF_NO_THREAD be a better match here?

> Signed-off-by: Eric Chanudet <echanude@...hat.com>

Sebastian