This is a note to let you know that I've just added the patch titled i915: Reject CCS modifiers for pipe C on Geminilake to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: i915-reject-ccs-modifiers-for-pipe-c-on-geminilake.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From foo@baz Wed Feb 28 16:23:28 CET 2018 From: Gabriel Krisman Bertazi <krisman@xxxxxxxxxxxxxxx> Date: Tue, 19 Dec 2017 22:24:10 -0200 Subject: i915: Reject CCS modifiers for pipe C on Geminilake From: Gabriel Krisman Bertazi <krisman@xxxxxxxxxxxxxxx> [ Upstream commit 8bc0d7ac934b6f2d0dc8f38a3104d281c9db1e98 ] Current code advertises (on the modifiers blob property) support for CCS modifier for pipe C on GLK, only to reject it later when validating the request before the atomic commit. This fixes the tests igt@kms_ccs@pipe-c-*, which should skip on GLK for pipe C (see bug 104096). A relevant discussion is archived at: https://lists.freedesktop.org/archives/intel-gfx/2017-December/150646.html Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104096 Signed-off-by: Gabriel Krisman Bertazi <krisman@xxxxxxxxxxxxxxx> Cc: Ben Widawsky <ben@xxxxxxxxxxxx> Reviewed-by: Ben Widawsky <ben@xxxxxxxxxxxx> Signed-off-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx> Link: https://patchwork.freedesktop.org/patch/msgid/20171220002410.5604-1-krisman@xxxxxxxxxxxxxxx (cherry picked from commit f0cbd8bd877f3d8c5b80a6b1add9ca9010d7f9d8) Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx> Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/i915/intel_display.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -13240,7 +13240,7 @@ intel_primary_plane_create(struct drm_i9 primary->frontbuffer_bit = INTEL_FRONTBUFFER_PRIMARY(pipe); primary->check_plane = intel_check_primary_plane; - if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv)) { + if (INTEL_GEN(dev_priv) >= 10) { intel_primary_formats = skl_primary_formats; num_formats = ARRAY_SIZE(skl_primary_formats); modifiers = skl_format_modifiers_ccs; Patches currently in stable-queue which might be from krisman@xxxxxxxxxxxxxxx are queue-4.14/i915-reject-ccs-modifiers-for-pipe-c-on-geminilake.patch