Re: [PATCH] firmware: dmi: Add access to the SKU ID string
From: Vinod Koul
Date: Thu Apr 26 2018 - 05:28:57 EST
On Wed, Apr 25, 2018 at 03:17:37PM -0600, Simon Glass wrote:
> Hi Vinod,
> On 24 April 2018 at 20:51, Vinod Koul <vinod.koul@xxxxxxxxx> wrote:
> > On Tue, Apr 24, 2018 at 03:11:11PM -0600, Simon Glass wrote:
> >> This is used in some systems from user space for determining the identity
> >> of the device.
> >> Expose this as a file so that that user-space tools don't need to read
> >> from /sys/firmware/dmi/tables/DMI
> > sysfs is an ABI and needs to be documented, I don't see that in this patch,
> > pls add.
> Thanks for taking a look. The only mention of the dmi/id I can find is
> in Kconfig:
Sorry I should have been explicit. All sysfs entries are ABI to userspace.
So they are documented in kernel and the meaning of files should not
typically get modfied over time.
Please read Documentation/ABI/README
For DMI, quick grep told me you should add to