linux-kernel - Re: [PATCH] soc: mediatek: fix the mistaken pointer accessed when subdomains are added

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Message-ID: <1520414499.677.5.camel@mtkswgap22>
Date:   Wed, 7 Mar 2018 17:21:39 +0800
From:   Sean Wang <sean.wang@...iatek.com>
To:     <matthias.bgg@...il.com>
CC:     <rjw@...ysocki.net>, <khilman@...libre.com>,
        <ulf.hansson@...aro.org>, <linux-mediatek@...ts.infradead.org>,
        <linux-pm@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <stable@...r.kernel.org>
Subject: Re: [PATCH] soc: mediatek: fix the mistaken pointer accessed when
 subdomains are added

Hi, Matthis
	
also a gentle ping for the patch
	
	Sean

On Fri, 2018-02-09 at 02:07 +0800, sean.wang@...iatek.com wrote:
> From: Sean Wang <sean.wang@...iatek.com>
> 
> Fix the pointer to struct scp_subdomian not being moved forward
> when each sub-domain is expected to be iteratively added through
> pm_genpd_add_subdomain call.
> 
> Cc: stable@...r.kernel.org
> Fixes: 53fddb1a66dd ("soc: mediatek: reduce code duplication of scpsys_probe across all SoCs")
> Reported-by: Weiyi Lu <weiyi.lu@...iatek.com>
> Signed-off-by: Sean Wang <sean.wang@...iatek.com>
> ---
>  drivers/soc/mediatek/mtk-scpsys.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/soc/mediatek/mtk-scpsys.c b/drivers/soc/mediatek/mtk-scpsys.c
> index fc55faa..9de801e 100644
> --- a/drivers/soc/mediatek/mtk-scpsys.c
> +++ b/drivers/soc/mediatek/mtk-scpsys.c
> @@ -1048,7 +1048,7 @@ static int scpsys_probe(struct platform_device *pdev)
>  
>  	pd_data = &scp->pd_data;
>  
> -	for (i = 0, sd = soc->subdomains ; i < soc->num_subdomains ; i++) {
> +	for (i = 0, sd = soc->subdomains; i < soc->num_subdomains; i++, sd++) {
>  		ret = pm_genpd_add_subdomain(pd_data->domains[sd->origin],
>  					     pd_data->domains[sd->subdomain]);
>  		if (ret && IS_ENABLED(CONFIG_PM))