linux-kernel - Re: [PATCH] watchdog: qcom: Use platform_get_irq

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Date:   Thu, 12 Dec 2019 23:15:33 -0800
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
Cc:     Andy Gross <agross@...nel.org>, Guenter Roeck <linux@...ck-us.net>,
        Stephen Boyd <swboyd@...omium.org>,
        Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@...aro.org>,
        Douglas Anderson <dianders@...omium.org>,
        linux-watchdog@...r.kernel.org,
        Matthias Kaehlcke <mka@...omium.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH] watchdog: qcom: Use platform_get_irq_optional() for bark
 irq

On Thu 12 Dec 22:49 PST 2019, Sai Prakash Ranjan wrote:

> platform_get_irq() prints an error message when the interrupt
> is not available. So on platforms where bark interrupt is
> not specified, following error message is observed on SDM845.
> 
> [    2.975888] qcom_wdt 17980000.watchdog: IRQ index 0 not found
> 
> This is also seen on SC7180, SM8150 SoCs as well.
> Fix this by using platform_get_irq_optional() instead.
> 
> Fixes: 36375491a4395654 ("watchdog: qcom: support pre-timeout when the bark irq is available")
> Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>

Reviewed-by: Bjorn Andersson <bjorn.andersson@...aro.org>

> ---
>  drivers/watchdog/qcom-wdt.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/watchdog/qcom-wdt.c b/drivers/watchdog/qcom-wdt.c
> index a494543d3ae1..eb47fe5ed280 100644
> --- a/drivers/watchdog/qcom-wdt.c
> +++ b/drivers/watchdog/qcom-wdt.c
> @@ -246,7 +246,7 @@ static int qcom_wdt_probe(struct platform_device *pdev)
>  	}
>  
>  	/* check if there is pretimeout support */
> -	irq = platform_get_irq(pdev, 0);
> +	irq = platform_get_irq_optional(pdev, 0);
>  	if (irq > 0) {
>  		ret = devm_request_irq(dev, irq, qcom_wdt_isr,
>  				       IRQF_TRIGGER_RISING,
> -- 
> QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
> of Code Aurora Forum, hosted by The Linux Foundation