linux-kernel - Re: [PATCH] mmc: sdhci-pxav3: fix device wakeup initialization

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Message-ID: <CAPDyKFrEkzTso9KciqoufFknMeHDxWS6s8FPVuzk6Kq66PzjPA@mail.gmail.com>
Date:	Thu, 4 Jun 2015 10:34:24 +0200
From:	Ulf Hansson <ulf.hansson@...aro.org>
To:	Jisheng Zhang <jszhang@...vell.com>
Cc:	linux-mmc <linux-mmc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] mmc: sdhci-pxav3: fix device wakeup initialization

On 2 June 2015 at 12:38, Jisheng Zhang <jszhang@...vell.com> wrote:
> MMC_PM_KEEP_POWER doesn't imply MMC_PM_WAKE_SDIO_IRQ, we should only
> enable device wake up when MMC_PM_WAKE_SDIO_IRQ is set. And "pm_flags"
> is the requested pm features, we should not set it in the host driver.
>
> At the same time, device wakeup is disabled by default, so there's no
> need to disable device wakeup explicitly.
>
> This patch fixes the warning as following:
>
> [   64.616651] ------------[ cut here ]------------
> [   64.616665] WARNING: CPU: 0 PID: 79 at linux/kernel/irq/manage.c:603 irq_set_irq_wake+0xf0/0x11c()
> [   64.616667] Unbalanced IRQ 87 wake disable
>
> Signed-off-by: Jisheng Zhang <jszhang@...vell.com>

Thanks, applied.

Kind regards
Uffe

> ---
>  drivers/mmc/host/sdhci-pxav3.c | 6 +-----
>  1 file changed, 1 insertion(+), 5 deletions(-)
>
> diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c
> index 01cb2d3..9cd5fc6 100644
> --- a/drivers/mmc/host/sdhci-pxav3.c
> +++ b/drivers/mmc/host/sdhci-pxav3.c
> @@ -457,12 +457,8 @@ static int sdhci_pxav3_probe(struct platform_device *pdev)
>
>         platform_set_drvdata(pdev, host);
>
> -       if (host->mmc->pm_caps & MMC_PM_KEEP_POWER) {
> +       if (host->mmc->pm_caps & MMC_PM_WAKE_SDIO_IRQ)
>                 device_init_wakeup(&pdev->dev, 1);
> -               host->mmc->pm_flags |= MMC_PM_WAKE_SDIO_IRQ;
> -       } else {
> -               device_init_wakeup(&pdev->dev, 0);
> -       }
>
>         pm_runtime_put_autosuspend(&pdev->dev);
>
> --
> 2.1.4
>
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