linux-kernel - Re: [PATCH] mmc: meson-mx-sdio: replace spin_lock_irqsave by spin

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Date:   Thu, 5 Nov 2020 13:59:09 +0100
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Tian Tao <tiantao6@...ilicon.com>
Cc:     Kevin Hilman <khilman@...libre.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        "open list:ARM/Amlogic Meson..." <linux-amlogic@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mmc: meson-mx-sdio: replace spin_lock_irqsave by
 spin_lock in hard IRQ

On Tue, 3 Nov 2020 at 04:48, Tian Tao <tiantao6@...ilicon.com> wrote:
>
> The code has been in a irq-disabled context since it is hard IRQ. There
> is no necessity to do it again.
>
> Signed-off-by: Tian Tao <tiantao6@...ilicon.com>

Applied for next, thanks!

Kind regards
Uffe


> ---
>  drivers/mmc/host/meson-mx-sdio.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/mmc/host/meson-mx-sdio.c b/drivers/mmc/host/meson-mx-sdio.c
> index 1c5299c..d4a4891 100644
> --- a/drivers/mmc/host/meson-mx-sdio.c
> +++ b/drivers/mmc/host/meson-mx-sdio.c
> @@ -418,10 +418,9 @@ static irqreturn_t meson_mx_mmc_irq(int irq, void *data)
>  {
>         struct meson_mx_mmc_host *host = (void *) data;
>         u32 irqs, send;
> -       unsigned long irqflags;
>         irqreturn_t ret;
>
> -       spin_lock_irqsave(&host->irq_lock, irqflags);
> +       spin_lock(&host->irq_lock);
>
>         irqs = readl(host->base + MESON_MX_SDIO_IRQS);
>         send = readl(host->base + MESON_MX_SDIO_SEND);
> @@ -434,7 +433,7 @@ static irqreturn_t meson_mx_mmc_irq(int irq, void *data)
>         /* finally ACK all pending interrupts */
>         writel(irqs, host->base + MESON_MX_SDIO_IRQS);
>
> -       spin_unlock_irqrestore(&host->irq_lock, irqflags);
> +       spin_unlock(&host->irq_lock);
>
>         return ret;
>  }
> --
> 2.7.4
>