drm/i915: Check fb stride against plane max stride
authorVille Syrjälä <ville.syrjala@linux.intel.com>
Tue, 18 Sep 2018 14:02:43 +0000 (17:02 +0300)
committerVille Syrjälä <ville.syrjala@linux.intel.com>
Tue, 25 Sep 2018 17:54:35 +0000 (20:54 +0300)
commitfc3fed5d297b51f9e2c7d4f969c95c0d6e50ca57
tree0bfcc4a1f3c99b51f852dc2e69e9ba31827698b0
parent0a3c561da12b9ac64c5b77dde3f9db0be515c167
drm/i915: Check fb stride against plane max stride

commit 4e0b83a567e2 ("drm/i915: Extract per-platform plane->check()
functions") removed the plane max stride check for sprite planes.
I was going to add it back when introducing GTT remapping for the
display, but after further thought it seems better to re-introduce
it separately.

So let's add the max stride check back. And let's do it in a nicer
form than what we had before and do it for all plane types (easy
now that we have the ->max_stride() plane vfunc).

Only sprite planes really need this for now since primary planes
are capable of scanning out the current max fb size we allow, and
cursors have more stringent stride checks elsewhere.

Cc: José Roberto de Souza <jose.souza@intel.com>
Fixes: 4e0b83a567e2 ("drm/i915: Extract per-platform plane->check() functions")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180918140243.12207-1-ville.syrjala@linux.intel.com
Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
drivers/gpu/drm/i915/intel_display.c
drivers/gpu/drm/i915/intel_drv.h
drivers/gpu/drm/i915/intel_sprite.c