tests/i915/kms_mmap_write_crc: handle missing gem_get_caching()

The kernel is meant to force the caching level for the object to
CACHE_NONE or CACHE_WT when first scanning out the object, since the
display engine is not coherent (assuming userspace hasn't already done
this). On discrete we no longer support set/get_caching, but we can only
do the scanout from lmem, which can only be mapped as WC and so should
always be coherent for scanout. Adjust the test and ensure it still
passes as expected.

Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/5303
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Reviewed-by: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>

0 files changed, 0 insertions, 0 deletions