linux-kernel - Re: [PATCH] net: stmmac: dwmac-sun8i: Use reset exclusive

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

Message-ID: <20170825151733.GB9475@Red>
Date:   Fri, 25 Aug 2017 17:17:33 +0200
From:   Corentin Labbe <clabbe.montjoie@...il.com>
To:     Maxime Ripard <maxime.ripard@...e-electrons.com>
Cc:     peppe.cavallaro@...com, alexandre.torgue@...com, wens@...e.org,
        netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: stmmac: dwmac-sun8i: Use reset exclusive

On Fri, Aug 25, 2017 at 04:48:32PM +0200, Maxime Ripard wrote:
> On Fri, Aug 25, 2017 at 04:38:05PM +0200, Corentin Labbe wrote:
> > The current dwmac_sun8i module cannot be rmmod/modprobe due to that
> > the reset controller was not released when removed.
> > 
> > This patch remove ambiguity, by using of_reset_control_get_exclusive and
> > add the missing reset_control_put().
> > 
> > Signed-off-by: Corentin Labbe <clabbe.montjoie@...il.com>
> > ---
> >  drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c | 3 ++-
> >  1 file changed, 2 insertions(+), 1 deletion(-)
> > 
> > diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
> > index fffd6d5fc907..675a09629d85 100644
> > --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
> > +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
> > @@ -782,6 +782,7 @@ static int sun8i_dwmac_unpower_internal_phy(struct sunxi_priv_data *gmac)
> >  
> >  	clk_disable_unprepare(gmac->ephy_clk);
> >  	reset_control_assert(gmac->rst_ephy);
> > +	reset_control_put(gmac->rst_ephy);
> >  	return 0;
> >  }
> >  
> > @@ -942,7 +943,7 @@ static int sun8i_dwmac_probe(struct platform_device *pdev)
> >  			return -EINVAL;
> >  		}
> >  
> > -		gmac->rst_ephy = of_reset_control_get(plat_dat->phy_node, NULL);
> > +		gmac->rst_ephy = of_reset_control_get_exclusive(plat_dat->phy_node, NULL);
> 
> Why not just use devm_reset_control_get?
> 

Because there no devm_ functions with of_

Regards