linux-kernel - Re: [PATCH] remoteproc: qcom: q6v5: Propagate EPROBE

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Message-ID: <20181006063938.GJ12063@builder>
Date:   Fri, 5 Oct 2018 23:39:39 -0700
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Sibi Sankar <sibis@...eaurora.org>
Cc:     Ohad Ben-Cohen <ohad@...ery.com>, linux-remoteproc@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        stable@...r.kernel.org, linux-arm-msm-owner@...r.kernel.org
Subject: Re: [PATCH] remoteproc: qcom: q6v5: Propagate EPROBE_DEFER

On Mon 24 Sep 23:50 PDT 2018, Sibi Sankar wrote:

> On 2018-09-20 07:21, Bjorn Andersson wrote:
> > In the case that the interrupts fail to result because of the
> > interrupt-controller not yet being registered the
> > platform_get_irq_byname() call will fail with -EPROBE_DEFER, but passing
> > this into devm_request_threaded_irq() will result in -EINVAL being
> > returned, the driver is therefor not reprobed later.
> > 
> 
> The patch looks fine.
> Reviewed-by: Sibi Sankar <sibis@...eaurora.org>
> 

Thanks for the review Sibi, applied the patch.

Regards,
Bjorn

> > Fixes: 3b415c8fb263 ("remoteproc: q6v5: Extract common resource
> > handling")
> > Cc: stable@...r.kernel.org
> > Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> > ---
> >  drivers/remoteproc/qcom_q6v5.c | 12 ++++++++++++
> >  1 file changed, 12 insertions(+)
> > 
> > diff --git a/drivers/remoteproc/qcom_q6v5.c
> > b/drivers/remoteproc/qcom_q6v5.c
> > index 61a760ee4aac..e9ab90c19304 100644
> > --- a/drivers/remoteproc/qcom_q6v5.c
> > +++ b/drivers/remoteproc/qcom_q6v5.c
> > @@ -198,6 +198,9 @@ int qcom_q6v5_init(struct qcom_q6v5 *q6v5, struct
> > platform_device *pdev,
> >  	}
> > 
> >  	q6v5->fatal_irq = platform_get_irq_byname(pdev, "fatal");
> > +	if (q6v5->fatal_irq == -EPROBE_DEFER)
> > +		return -EPROBE_DEFER;
> > +
> >  	ret = devm_request_threaded_irq(&pdev->dev, q6v5->fatal_irq,
> >  					NULL, q6v5_fatal_interrupt,
> >  					IRQF_TRIGGER_RISING | IRQF_ONESHOT,
> > @@ -208,6 +211,9 @@ int qcom_q6v5_init(struct qcom_q6v5 *q6v5, struct
> > platform_device *pdev,
> >  	}
> > 
> >  	q6v5->ready_irq = platform_get_irq_byname(pdev, "ready");
> > +	if (q6v5->ready_irq == -EPROBE_DEFER)
> > +		return -EPROBE_DEFER;
> > +
> >  	ret = devm_request_threaded_irq(&pdev->dev, q6v5->ready_irq,
> >  					NULL, q6v5_ready_interrupt,
> >  					IRQF_TRIGGER_RISING | IRQF_ONESHOT,
> > @@ -218,6 +224,9 @@ int qcom_q6v5_init(struct qcom_q6v5 *q6v5, struct
> > platform_device *pdev,
> >  	}
> > 
> >  	q6v5->handover_irq = platform_get_irq_byname(pdev, "handover");
> > +	if (q6v5->handover_irq == -EPROBE_DEFER)
> > +		return -EPROBE_DEFER;
> > +
> >  	ret = devm_request_threaded_irq(&pdev->dev, q6v5->handover_irq,
> >  					NULL, q6v5_handover_interrupt,
> >  					IRQF_TRIGGER_RISING | IRQF_ONESHOT,
> > @@ -229,6 +238,9 @@ int qcom_q6v5_init(struct qcom_q6v5 *q6v5, struct
> > platform_device *pdev,
> >  	disable_irq(q6v5->handover_irq);
> > 
> >  	q6v5->stop_irq = platform_get_irq_byname(pdev, "stop-ack");
> > +	if (q6v5->stop_irq == -EPROBE_DEFER)
> > +		return -EPROBE_DEFER;
> > +
> >  	ret = devm_request_threaded_irq(&pdev->dev, q6v5->stop_irq,
> >  					NULL, q6v5_stop_interrupt,
> >  					IRQF_TRIGGER_RISING | IRQF_ONESHOT,
> 
> -- 
> -- Sibi Sankar --
> Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
> a Linux Foundation Collaborative Project.