linux-kernel - Re: [PATCH] nvmem: mtk-efuse: Remove EFUSE register write support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:   Wed, 26 Aug 2020 14:12:13 +0800
From:   Chih-En Hsu <chih-en.hsu@...iatek.com>
To:     CK Hu <ck.hu@...iatek.com>
CC:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        <Andrew-CT.Chen@...iatek.com>, <srv_heupstream@...iatek.com>,
        <linux-kernel@...r.kernel.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-arm-kernel@...ts.infradead.org>, <Michael.Mei@...iatek.com>
Subject: Re: [PATCH] nvmem: mtk-efuse: Remove EFUSE register write support

Hi CK:

I see.

I will add the following fix tag into the next patch version.

Fixes: 4c7e4fe37766 ("nvmem: mediatek: Add Mediatek EFUSE driver")

Thanks a lot.

Alex


On Wed, 2020-08-26 at 13:16 +0800, CK Hu wrote:
> Hi, Chih-En:
> 
> On Wed, 2020-08-26 at 13:01 +0800, Chih-En Hsu wrote:
> > This patch is to remove function "mtk_reg_write" since
> > Mediatek EFUSE hardware only supports read functionality
> > for NVMEM consumers.
> > 
> 
> This is a bug-fix patch, so need a 'Fixes' tag. You could refer to [1].
> 
> [1]
> https://www.kernel.org/doc/html/latest/process/submitting-patches.html#describe-changes
> 
> Regards,
> CK.
> 
> > Signed-off-by: Chih-En Hsu <chih-en.hsu@...iatek.com>
> > ---
> >  drivers/nvmem/mtk-efuse.c | 14 --------------
> >  1 file changed, 14 deletions(-)
> > 
> > diff --git a/drivers/nvmem/mtk-efuse.c b/drivers/nvmem/mtk-efuse.c
> > index 856d9c3fc38e..6a537d959f14 100644
> > --- a/drivers/nvmem/mtk-efuse.c
> > +++ b/drivers/nvmem/mtk-efuse.c
> > @@ -28,19 +28,6 @@ static int mtk_reg_read(void *context,
> >  	return 0;
> >  }
> >  
> > -static int mtk_reg_write(void *context,
> > -			 unsigned int reg, void *_val, size_t bytes)
> > -{
> > -	struct mtk_efuse_priv *priv = context;
> > -	u32 *val = _val;
> > -	int i = 0, words = bytes / 4;
> > -
> > -	while (words--)
> > -		writel(*val++, priv->base + reg + (i++ * 4));
> > -
> > -	return 0;
> > -}
> > -
> >  static int mtk_efuse_probe(struct platform_device *pdev)
> >  {
> >  	struct device *dev = &pdev->dev;
> > @@ -61,7 +48,6 @@ static int mtk_efuse_probe(struct platform_device *pdev)
> >  	econfig.stride = 4;
> >  	econfig.word_size = 4;
> >  	econfig.reg_read = mtk_reg_read;
> > -	econfig.reg_write = mtk_reg_write;
> >  	econfig.size = resource_size(res);
> >  	econfig.priv = priv;
> >  	econfig.dev = dev;
> 
>