linux-kernel - RE: [PATCH V3 0/4] clk: new APIs to handle all available clocks

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Date:   Wed, 29 Aug 2018 12:26:04 +0000
From:   "A.s. Dong" <aisheng.dong@....com>
To:     Stephen Boyd <sboyd@...nel.org>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "mturquette@...libre.com" <mturquette@...libre.com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        dl-linux-imx <linux-imx@....com>,
        "thor.thayer@...ux.intel.com" <thor.thayer@...ux.intel.com>,
        "linux-clk@...r.kernel.org" <linux-clk@...r.kernel.org>
Subject: RE: [PATCH V3 0/4] clk: new APIs to handle all available clocks

> -----Original Message-----
> From: Stephen Boyd [mailto:sboyd@...nel.org]
> Sent: Wednesday, August 29, 2018 11:09 AM
> To: A.s. Dong <aisheng.dong@....com>
> Cc: linux-kernel@...r.kernel.org; linux-arm-kernel@...ts.infradead.org;
> mturquette@...libre.com; shawnguo@...nel.org; dl-linux-imx
> <linux-imx@....com>; thor.thayer@...ux.intel.com; linux-clk@...r.kernel.org
> Subject: RE: [PATCH V3 0/4] clk: new APIs to handle all available clocks
> 
> Quoting A.s. Dong (2018-08-16 19:33:52)
> > Hi Stephen,
> >
> > Do you want me to resend this series for review?
> > It seems have been pending for quite a long time.
> >
> > Thor just pinged me for its status as he wants to use it.
> >
> 
> I was waiting for someone to try them out or review them. Good that it
> happened!
> 
> I've taken a look at the patches and I'm slightly annoyed with the API that
> passes in a double pointer to clk_bulk_data and returns a count of the number
> of clks found. I guess it's ok though. It's really just this
> line:
> 
> 	devres->clks = *clks;
> 
> which makes my brain all confused and go think about what's being assigned
> and if it's a struct copy or not.
> 
> Maybe this on top would make it easier to take? I'll think about it tonight.
> 

Looks like a good idea to me.
Will update and resend.
Thanks for the suggestion.

Regards
Dong Aisheng

> ---8<---
> diff --git a/drivers/clk/clk-devres.c b/drivers/clk/clk-devres.c index
> 6d3ca5ec5de8..12c87457eca1 100644
> --- a/drivers/clk/clk-devres.c
> +++ b/drivers/clk/clk-devres.c
> @@ -81,9 +81,9 @@ int __must_check devm_clk_bulk_get_all(struct device
> *dev,
>  	if (!devres)
>  		return -ENOMEM;
> 
> -	ret = clk_bulk_get_all(dev, clks);
> +	ret = clk_bulk_get_all(dev, &devres->clks);
>  	if (ret > 0) {
> -		devres->clks = *clks;
> +		*clks = devres->clks;
>  		devres->num_clks = ret;
>  		devres_add(dev, devres);
>  	} else {