linux-kernel - Re: [PATCH 6/6] remoteproc: imx_rproc: Clean up after ops introduction

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Message-ID: <aL7wUp3lS9E1R/gQ@lizhi-Precision-Tower-5810>
Date: Mon, 8 Sep 2025 11:03:46 -0400
From: Frank Li <Frank.li@....com>
To: Peng Fan <peng.fan@....com>
Cc: Bjorn Andersson <andersson@...nel.org>,
	Mathieu Poirier <mathieu.poirier@...aro.org>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Daniel Baluta <daniel.baluta@....com>,
	Hiago De Franco <hiago.franco@...adex.com>,
	linux-remoteproc@...r.kernel.org, imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 6/6] remoteproc: imx_rproc: Clean up after ops
 introduction

On Mon, Sep 08, 2025 at 09:07:39PM +0800, Peng Fan wrote:
> With the switch-case in imx_rproc_{start,stop}{} removed, simplify
> the code logic by removing 'goto'. The last switch-case in
> imx_rproc_detect_mode() are no longer needed and can be removed.
>
> This cleanup improves code readability and aligns with the new ops-based
> design.
>
> No functional changes.
>
> Signed-off-by: Peng Fan <peng.fan@....com>
> ---
>  drivers/remoteproc/imx_rproc.c | 25 +++++++------------------
>  1 file changed, 7 insertions(+), 18 deletions(-)
>
> diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c
> index 5fa729f4286f6ac939357c32fef41d7d97e5f860..ed8395b097d07d02e5323550ff497819f9b95ad6 100644
> --- a/drivers/remoteproc/imx_rproc.c
> +++ b/drivers/remoteproc/imx_rproc.c
> @@ -323,14 +323,11 @@ static int imx_rproc_start(struct rproc *rproc)
>  	if (ret)
>  		return ret;
>
> -	if (dcfg->ops && dcfg->ops->start) {
> +	if (dcfg->ops && dcfg->ops->start)
>  		ret = dcfg->ops->start(rproc);
> -		goto start_ret;
> -	}
> -
> -	return -EOPNOTSUPP;
> +	else
> +		return -EOPNOTSUPP;
>
> -start_ret:
>  	if (ret)
>  		dev_err(dev, "Failed to enable remote core!\n");
>
> @@ -380,14 +377,11 @@ static int imx_rproc_stop(struct rproc *rproc)
>  	struct device *dev = priv->dev;
>  	int ret;
>
> -	if (dcfg->ops && dcfg->ops->stop) {
> +	if (dcfg->ops && dcfg->ops->stop)
>  		ret = dcfg->ops->stop(rproc);
> -		goto stop_ret;
> -	}
> -
> -	return -EOPNOTSUPP;
> +	else
> +		return -EOPNOTSUPP;
>
> -stop_ret:
>  	if (ret)
>  		dev_err(dev, "Failed to stop remote core\n");
>  	else
> @@ -1000,13 +994,8 @@ static int imx_rproc_detect_mode(struct imx_rproc *priv)
>  	if (dcfg->ops && dcfg->ops->detect_mode)
>  		return dcfg->ops->detect_mode(priv->rproc);
>
> -	switch (dcfg->method) {
> -	case IMX_RPROC_NONE:
> +	if (dcfg->method == IMX_RPROC_NONE)

Is it possible remove "method"? Can you check dcfg->ops->dectect_mode NULL
here?

Frank Li
>  		priv->rproc->state = RPROC_DETACHED;
> -		return 0;
> -	default:
> -		break;
> -	}
>
>  	return 0;
>  }
>
> --
> 2.37.1
>