[PATCH] drm/aspeed: Fix vga_pw sysfs output

Hi David, Daniel,

On Fri, 19 Nov 2021 at 06:54, Jeremy Kerr [off-list ref] wrote:

Hi Joel,

quoted

Before the drm driver had support for this file there was a driver
that exposed the contents of the vga password register to userspace.
It would present the entire register instead of interpreting it.

The drm implementation chose to mask of the lower bit, without
explaining why. This breaks the existing userspace, which is looking
for 0xa8 in the lower byte.

Change our implementation to expose the entire register.

As a userspace consumer of this:

Reviewed-by: Jeremy Kerr <jk@codeconstruct.com.au>

Am I okay to apply this to drm-misc-fixes? I've not applied a patch to
the fixes tree before, so I wanted to check if there is some process
I've missed.

Cheers,

Joel