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

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Message-ID: <f8a32e99-c26f-ef93-1a6d-3b2e6b5ced29@linaro.org>
Date:   Mon, 26 Oct 2020 19:28:33 +0100
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     Tian Tao <tiantao6@...ilicon.com>, niklas.soderlund@...natech.se,
        rui.zhang@...el.com, amitk@...nel.org,
        linux-renesas-soc@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] thermal: replace spin_lock_irqsave by spin_lock in hard
 IRQ

On 21/10/2020 05:05, Tian Tao 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>
> ---

Whe resending with the log improved, please fix the subject:

thermal: rcar: Replace ...

Thanks

  -- Daniel

>  drivers/thermal/rcar_thermal.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c
> index 5c2a13b..6ae757d 100644
> --- a/drivers/thermal/rcar_thermal.c
> +++ b/drivers/thermal/rcar_thermal.c
> @@ -409,16 +409,15 @@ static irqreturn_t rcar_thermal_irq(int irq, void *data)
>  {
>  	struct rcar_thermal_common *common = data;
>  	struct rcar_thermal_priv *priv;
> -	unsigned long flags;
>  	u32 status, mask;
>  
> -	spin_lock_irqsave(&common->lock, flags);
> +	spin_lock(&common->lock);
>  
>  	mask	= rcar_thermal_common_read(common, INTMSK);
>  	status	= rcar_thermal_common_read(common, STR);
>  	rcar_thermal_common_write(common, STR, 0x000F0F0F & mask);
>  
> -	spin_unlock_irqrestore(&common->lock, flags);
> +	spin_unlock(&common->lock);
>  
>  	status = status & ~mask;
>  
> 


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