[Intel-gfx] [PATCH v4 05/13] drivers: create binary sysfs for class

Ramalingam C ramalingam.c at intel.com
Fri Apr 5 10:36:22 UTC 2019

On 2019-04-05 at 11:23:00 +0200, Greg Kroah-Hartman wrote:
> On Fri, Apr 05, 2019 at 02:12:54PM +0530, Ramalingam C wrote:
> > Functions to create and remove the binary sysfs for class are added.
> > 
> > These are getting introduced as DRM wants to create the common binary
> > sysfs across the drm subsystem to handle hdcp srm.
> Why do you need individual files?  That's almost always a sign that you
> are going to race with userspace in a bad way.  Why not just use an
> attribute group which provides automatic support for this?

Reason behind this move is to have a common srm entry path across all drm
drivers. And the data fed into this is binary blob. So I am creating a
binary sysfs "hdcp_srm" at /sys/class/drm/

> thanks,
> greg k-h

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