diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/4779-drm-amd-display-fix-use-of-uninitialized-memory.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.14.71/4779-drm-amd-display-fix-use-of-uninitialized-memory.patch | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/4779-drm-amd-display-fix-use-of-uninitialized-memory.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/4779-drm-amd-display-fix-use-of-uninitialized-memory.patch new file mode 100644 index 00000000..a77dd6a8 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.14.71/4779-drm-amd-display-fix-use-of-uninitialized-memory.patch @@ -0,0 +1,36 @@ +From c1b8da392e8418714a9ccd6389fdf92d4ba8bb3e Mon Sep 17 00:00:00 2001 +From: Wesley Chalmers <Wesley.Chalmers@amd.com> +Date: Tue, 29 May 2018 17:45:05 -0400 +Subject: [PATCH 4779/5725] drm/amd/display: fix use of uninitialized memory + +DML does not calculate chroma values for RQ when surface is not YUV, but DC +will unconditionally use the uninitialized values for HW programming. +This does not cause visual corruption since HW will ignore garbage chroma +values when surface is not YUV, but causes presubmission tests to fail +golden value comparison. + +Signed-off-by: Wesley Chalmers <Wesley.Chalmers@amd.com> +Signed-off-by: Eryk Brol <eryk.brol@amd.com> +Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com> +Acked-by: Harry Wentland <harry.wentland@amd.com> +Signed-off-by: Alex Deucher <alexander.deucher@amd.com> +--- + drivers/gpu/drm/amd/display/dc/dml/dml1_display_rq_dlg_calc.c | 2 ++ + 1 file changed, 2 insertions(+) + +diff --git a/drivers/gpu/drm/amd/display/dc/dml/dml1_display_rq_dlg_calc.c b/drivers/gpu/drm/amd/display/dc/dml/dml1_display_rq_dlg_calc.c +index c2037da..0efbf41 100644 +--- a/drivers/gpu/drm/amd/display/dc/dml/dml1_display_rq_dlg_calc.c ++++ b/drivers/gpu/drm/amd/display/dc/dml/dml1_display_rq_dlg_calc.c +@@ -239,6 +239,8 @@ void dml1_extract_rq_regs( + extract_rq_sizing_regs(mode_lib, &(rq_regs->rq_regs_l), rq_param.sizing.rq_l); + if (rq_param.yuv420) + extract_rq_sizing_regs(mode_lib, &(rq_regs->rq_regs_c), rq_param.sizing.rq_c); ++ else ++ memset(&(rq_regs->rq_regs_c), 0, sizeof(rq_regs->rq_regs_c)); + + rq_regs->rq_regs_l.swath_height = dml_log2(rq_param.dlg.rq_l.swath_height); + rq_regs->rq_regs_c.swath_height = dml_log2(rq_param.dlg.rq_c.swath_height); +-- +2.7.4 + |