diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.19.8/1553-drm-amd-display-Fix-Divide-by-0-in-memory-calculatio.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.19.8/1553-drm-amd-display-Fix-Divide-by-0-in-memory-calculatio.patch | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.19.8/1553-drm-amd-display-Fix-Divide-by-0-in-memory-calculatio.patch b/common/recipes-kernel/linux/linux-yocto-4.19.8/1553-drm-amd-display-Fix-Divide-by-0-in-memory-calculatio.patch new file mode 100644 index 00000000..66998cd6 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.19.8/1553-drm-amd-display-Fix-Divide-by-0-in-memory-calculatio.patch @@ -0,0 +1,55 @@ +From 82959d909a8e249308229ac7bf36ac2514519adc Mon Sep 17 00:00:00 2001 +From: Murton Liu <murton.liu@amd.com> +Date: Fri, 15 Feb 2019 15:05:43 -0500 +Subject: [PATCH 1553/2940] drm/amd/display: Fix Divide by 0 in memory + calculations + +Check if we get any values equal to 0, and set to 1 if so. + +Change-Id: I0c52d35fb9564c7a4c8a2c4f3af9c17c1077e7ea +Signed-off-by: Murton Liu <murton.liu@amd.com> +Reviewed-by: Aric Cyr <Aric.Cyr@amd.com> +Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> +Acked-by: Sivapiriyan Kumarasamy <Sivapiriyan.Kumarasamy@amd.com> +--- + .../drm/amd/display/dc/dcn10/dcn10_dpp_dscl.c | 20 ++++++++++++++----- + 1 file changed, 15 insertions(+), 5 deletions(-) + +diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp_dscl.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp_dscl.c +index c7642e748297..ce21a290bf3e 100644 +--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp_dscl.c ++++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp_dscl.c +@@ -406,15 +406,25 @@ void dpp1_dscl_calc_lb_num_partitions( + int *num_part_y, + int *num_part_c) + { ++ int lb_memory_size, lb_memory_size_c, lb_memory_size_a, num_partitions_a, ++ lb_bpc, memory_line_size_y, memory_line_size_c, memory_line_size_a; ++ + int line_size = scl_data->viewport.width < scl_data->recout.width ? + scl_data->viewport.width : scl_data->recout.width; + int line_size_c = scl_data->viewport_c.width < scl_data->recout.width ? + scl_data->viewport_c.width : scl_data->recout.width; +- int lb_bpc = dpp1_dscl_get_lb_depth_bpc(scl_data->lb_params.depth); +- int memory_line_size_y = (line_size * lb_bpc + 71) / 72; /* +71 to ceil */ +- int memory_line_size_c = (line_size_c * lb_bpc + 71) / 72; /* +71 to ceil */ +- int memory_line_size_a = (line_size + 5) / 6; /* +5 to ceil */ +- int lb_memory_size, lb_memory_size_c, lb_memory_size_a, num_partitions_a; ++ ++ if (line_size == 0) ++ line_size = 1; ++ ++ if (line_size_c == 0) ++ line_size_c = 1; ++ ++ ++ lb_bpc = dpp1_dscl_get_lb_depth_bpc(scl_data->lb_params.depth); ++ memory_line_size_y = (line_size * lb_bpc + 71) / 72; /* +71 to ceil */ ++ memory_line_size_c = (line_size_c * lb_bpc + 71) / 72; /* +71 to ceil */ ++ memory_line_size_a = (line_size + 5) / 6; /* +5 to ceil */ + + if (lb_config == LB_MEMORY_CONFIG_1) { + lb_memory_size = 816; +-- +2.17.1 + |