linux-kernel - RE: [PATCH v2] platform/mellanox: fix the mlx-bootctl sysfs

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Date:   Wed, 18 Dec 2019 15:26:23 +0000
From:   Liming Sun <lsun@...lanox.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
CC:     Andy Shevchenko <andy@...radead.org>,
        Darren Hart <dvhart@...radead.org>,
        Vadim Pasternak <vadimp@...lanox.com>,
        David Woods <dwoods@...lanox.com>,
        Platform Driver <platform-driver-x86@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v2] platform/mellanox: fix the mlx-bootctl sysfs

Thanks Andy for the comments. v3 has been posted with the updates.

- Liming

> -----Original Message-----
> From: Andy Shevchenko <andy.shevchenko@...il.com>
> Sent: Wednesday, December 18, 2019 8:01 AM
> To: Liming Sun <lsun@...lanox.com>
> Cc: Andy Shevchenko <andy@...radead.org>; Darren Hart <dvhart@...radead.org>; Vadim Pasternak <vadimp@...lanox.com>; David
> Woods <dwoods@...lanox.com>; Platform Driver <platform-driver-x86@...r.kernel.org>; Linux Kernel Mailing List <linux-
> kernel@...r.kernel.org>
> Subject: Re: [PATCH v2] platform/mellanox: fix the mlx-bootctl sysfs
> 
> On Fri, Dec 13, 2019 at 5:21 PM Liming Sun <lsun@...lanox.com> wrote:
> 
> > +       ret = sysfs_create_group(&dev->kobj, &mlxbf_bootctl_group);
> > +       if (ret) {
> > +               dev_err(dev, "failed to create attributes, err=%d\n", ret);
> > +               return ret;
> > +       }
> > +
> >         /* Ensure we have the UUID we expect for this service. */
> >         arm_smccc_smc(MLXBF_BOOTCTL_SIP_SVC_UID, 0, 0, 0, 0, 0, 0, 0, &res);
> >         guid_parse(mlxbf_bootctl_svc_uuid_str, &guid);
> > @@ -305,8 +312,16 @@ static int mlxbf_bootctl_probe(struct platform_device *pdev)
> >         return 0;
> >  }
> >
> > +static int mlxbf_bootctl_remove(struct platform_device *pdev)
> > +{
> > +       sysfs_remove_group(&pdev->dev.kobj, &mlxbf_bootctl_group);
> > +
> > +       return 0;
> > +}
> > +
> >  static struct platform_driver mlxbf_bootctl_driver = {
> >         .probe = mlxbf_bootctl_probe,
> > +       .remove = mlxbf_bootctl_remove,
> >         .driver = {
> >                 .name = "mlxbf-bootctl",
> >                 .groups = mlxbf_bootctl_groups,
> 
> Please, use dev_groups member of the struct driver instead of above approach.
> 
> --
> With Best Regards,
> Andy Shevchenko