netdev - RE: [PATCH] can: rcar_can: Fix suspend/resume

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Message-ID: <TY2PR01MB3692A6660AF5B4C8B602F0B7D8A49@TY2PR01MB3692.jpnprd01.prod.outlook.com>
Date:   Fri, 24 Sep 2021 07:43:42 +0000
From:   Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
To:     Simon Horman <horms@...nel.org>, Ulrich Hecht <uli@...nd.eu>
CC:     "wg@...ndegger.com" <wg@...ndegger.com>,
        "mkl@...gutronix.de" <mkl@...gutronix.de>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "linux-can@...r.kernel.org" <linux-can@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-renesas-soc@...r.kernel.org" 
        <linux-renesas-soc@...r.kernel.org>,
        Ayumi Nakamichi <ayumi.nakamichi.kf@...esas.com>
Subject: RE: [PATCH] can: rcar_can: Fix suspend/resume

Hi Simon-san,

> From: Simon Horman, Sent: Thursday, September 23, 2021 12:24 AM
> 
> On Tue, Sep 21, 2021 at 12:38:13PM +0200, Ulrich Hecht wrote:
> >
> > > On 09/21/2021 7:19 AM Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com> wrote:
> > >
> > >
> > > If the driver was not opened, rcar_can_suspend() should not call
> > > clk_disable() because the clock was not enabled.
> > >
> > > Fixes: fd1159318e55 ("can: add Renesas R-Car CAN driver")
> > > Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
> > > Tested-by: Ayumi Nakamichi <ayumi.nakamichi.kf@...esas.com>
> > > ---
> > >  drivers/net/can/rcar/rcar_can.c | 21 +++++++++++++--------
> > >  1 file changed, 13 insertions(+), 8 deletions(-)
> > >
> > > diff --git a/drivers/net/can/rcar/rcar_can.c b/drivers/net/can/rcar/rcar_can.c
> > > index 00e4533c8bdd..6b4eefb03044 100644
> > > --- a/drivers/net/can/rcar/rcar_can.c
> > > +++ b/drivers/net/can/rcar/rcar_can.c
> 
> ...
> 
> > > @@ -858,6 +860,7 @@ static int __maybe_unused rcar_can_suspend(struct device *dev)
> > >  	priv->can.state = CAN_STATE_SLEEPING;
> > >
> > >  	clk_disable(priv->clk);
> > > +
> > >  	return 0;
> > >  }
> > >
> 
> nit: this hunk seems unrelated to the rest of the patch

Thank you for your comment! I'll remove this.

Best regards,
Yoshihiro Shimda

> ...