linux-kernel - Re: [PATCH 1/4] mmc: mtk-sd: don't hard-code interrupt trigger type

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Message-ID: <1557042233.18628.33.camel@mhfsdcap03>
Date:   Sun, 5 May 2019 15:43:53 +0800
From:   Chaotian Jing <chaotian.jing@...iatek.com>
To:     NeilBrown <neil@...wn.name>
CC:     Ulf Hansson <ulf.hansson@...aro.org>, <linux-mmc@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <thirtythreeforty@...il.com>
Subject: Re: [PATCH 1/4] mmc: mtk-sd: don't hard-code interrupt trigger type

On Sat, 2019-05-04 at 20:24 +1000, NeilBrown wrote:
> When using devicetree for configuration, interrupt trigger type
> should be described in the dts file, not hard-coded in the C code.
> 
> The mtk-sd silicon in the mt7621 soc uses an active-high interrupt
> and so cannot be used with the current code.
> 
> So replace IRQF_TRIGGER_LOW with IRQF_TRIGGER_NONE.
> 
> Also IRQF_ONESHOT is not needed - it is used for threaded interrupt
> handlers, and this driver does not used a threaded interrupt handler.
> So remove that setting.
> 
> Signed-off-by: NeilBrown <neil@...wn.name>
 Reviewed-by:Chaotian Jing <chaotian.jing@...iatek.com>
> ---
>  drivers/mmc/host/mtk-sd.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c
> index 0798f0ba6d34..469d4a717175 100644
> --- a/drivers/mmc/host/mtk-sd.c
> +++ b/drivers/mmc/host/mtk-sd.c
> @@ -2240,7 +2240,7 @@ static int msdc_drv_probe(struct platform_device *pdev)
>  	msdc_init_hw(host);
>  
>  	ret = devm_request_irq(&pdev->dev, host->irq, msdc_irq,
> -		IRQF_TRIGGER_LOW | IRQF_ONESHOT, pdev->name, host);
> +			       IRQF_TRIGGER_NONE, pdev->name, host);
>  	if (ret)
>  		goto release;
>  
> 
>