linux-kernel - Re: [PATCH] mmc: owl-mmc: replace spin_lock_irqsave by spin

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Date:   Thu, 5 Nov 2020 13:59:12 +0100
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Tian Tao <tiantao6@...ilicon.com>
Cc:     Andreas Färber <afaerber@...e.de>,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mmc: owl-mmc: replace spin_lock_irqsave by spin_lock in
 hard IRQ

On Mon, 2 Nov 2020 at 01:51, 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/owl-mmc.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/mmc/host/owl-mmc.c b/drivers/mmc/host/owl-mmc.c
> index ccf214a..82d2bad 100644
> --- a/drivers/mmc/host/owl-mmc.c
> +++ b/drivers/mmc/host/owl-mmc.c
> @@ -134,10 +134,9 @@ static void owl_mmc_update_reg(void __iomem *reg, unsigned int val, bool state)
>  static irqreturn_t owl_irq_handler(int irq, void *devid)
>  {
>         struct owl_mmc_host *owl_host = devid;
> -       unsigned long flags;
>         u32 state;
>
> -       spin_lock_irqsave(&owl_host->lock, flags);
> +       spin_lock(&owl_host->lock);
>
>         state = readl(owl_host->base + OWL_REG_SD_STATE);
>         if (state & OWL_SD_STATE_TEI) {
> @@ -147,7 +146,7 @@ static irqreturn_t owl_irq_handler(int irq, void *devid)
>                 complete(&owl_host->sdc_complete);
>         }
>
> -       spin_unlock_irqrestore(&owl_host->lock, flags);
> +       spin_unlock(&owl_host->lock);
>
>         return IRQ_HANDLED;
>  }
> --
> 2.7.4
>