diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.19.8/0030-drm-amd-display-Add-check-for-num-of-entries-in-gamm.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.19.8/0030-drm-amd-display-Add-check-for-num-of-entries-in-gamm.patch | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.19.8/0030-drm-amd-display-Add-check-for-num-of-entries-in-gamm.patch b/common/recipes-kernel/linux/linux-yocto-4.19.8/0030-drm-amd-display-Add-check-for-num-of-entries-in-gamm.patch new file mode 100644 index 00000000..6cd2d047 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.19.8/0030-drm-amd-display-Add-check-for-num-of-entries-in-gamm.patch @@ -0,0 +1,33 @@ +From 1624e07cb586103f76ebf0bab0dda1798502f55b Mon Sep 17 00:00:00 2001 +From: Vitaly Prosyak <vitaly.prosyak@amd.com> +Date: Thu, 12 Jul 2018 14:26:47 -0500 +Subject: [PATCH 0030/2940] drm/amd/display: Add check for num of entries in + gamma + +This check avoids potential bugs related to gamma. + +Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com> +Reviewed-by: Charlene Liu <Charlene.Liu@amd.com> +Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> +Signed-off-by: Alex Deucher <alexander.deucher@amd.com> +--- + drivers/gpu/drm/amd/display/modules/color/color_gamma.c | 3 ++- + 1 file changed, 2 insertions(+), 1 deletion(-) + +diff --git a/drivers/gpu/drm/amd/display/modules/color/color_gamma.c b/drivers/gpu/drm/amd/display/modules/color/color_gamma.c +index 2a6f0300cc7f..cdcefd087487 100644 +--- a/drivers/gpu/drm/amd/display/modules/color/color_gamma.c ++++ b/drivers/gpu/drm/amd/display/modules/color/color_gamma.c +@@ -1584,7 +1584,8 @@ bool mod_color_calculate_degamma_params(struct dc_transfer_func *input_tf, + /* we can use hardcoded curve for plain SRGB TF */ + if (input_tf->type == TF_TYPE_PREDEFINED && + input_tf->tf == TRANSFER_FUNCTION_SRGB && +- (!mapUserRamp && ramp->type == GAMMA_RGB_256)) ++ (!mapUserRamp && ++ (ramp->type == GAMMA_RGB_256 || ramp->num_entries == 0))) + return true; + + input_tf->type = TF_TYPE_DISTRIBUTED_POINTS; +-- +2.17.1 + |