linux-kernel - Re: [PATCH v5 2/2] platform/mellanox/mlxbf-bootctl: Add the ABI definitions

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Date:   Fri, 17 May 2019 19:59:26 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
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-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        "Paul E. McKenney" <paulmck@...ux.ibm.com>
Subject: Re: [PATCH v5 2/2] platform/mellanox/mlxbf-bootctl: Add the ABI
 definitions

On Fri, May 17, 2019 at 01:49:05PM -0400, Liming Sun wrote:
> This commit adds the ABI definitions exposed to userspace for
> the platform/mellanox/mlxbf-bootctl driver.
> 
> Reviewed-by: Vadim Pasternak <vadimp@...lanox.com>
> Signed-off-by: Liming Sun <lsun@...lanox.com>
> ---
>  .../ABI/testing/sysfs-platform-mellanox-bootctl    | 58 ++++++++++++++++++++++
>  MAINTAINERS                                        |  1 +
>  2 files changed, 59 insertions(+)
>  create mode 100644 Documentation/ABI/testing/sysfs-platform-mellanox-bootctl
> 
> diff --git a/Documentation/ABI/testing/sysfs-platform-mellanox-bootctl b/Documentation/ABI/testing/sysfs-platform-mellanox-bootctl
> new file mode 100644
> index 0000000..19a14db
> --- /dev/null
> +++ b/Documentation/ABI/testing/sysfs-platform-mellanox-bootctl
> @@ -0,0 +1,58 @@
> +What:		/sys/bus/platform/drivers/mlxbf-bootctl/lifecycle_state
> +Date:		May 2019
> +KernelVersion:	5.3
> +Contact:	"Liming Sun <lsun@...lanox.com>"
> +Description:
> +		The Life-cycle state of the SoC, which could be one of the
> +		following values.
> +		  Production - Production state and can be updated to secure
> +		  GA Secured - Secure chip and not able to change state
> +		  GA Non-Secured - Non-Secure chip and not able to change state
> +		  RMA - Return Merchandise Authorization

A "driver" does not have a lifecycle state, a "device" does.

You are putting all of these attributes in the wrong place.  Put them on
your device please, not the driver.  driver-specific attributes are
_VERY_ rare, and only for things that can modify/show for all devices
attached to that driver.

thanks,

greg k-h