diff options
Diffstat (limited to 'common/recipes-kernel/linux/files/0846-drm-amd-dal-Prevent-underflow-lock.patch')
| -rw-r--r-- | common/recipes-kernel/linux/files/0846-drm-amd-dal-Prevent-underflow-lock.patch | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/files/0846-drm-amd-dal-Prevent-underflow-lock.patch b/common/recipes-kernel/linux/files/0846-drm-amd-dal-Prevent-underflow-lock.patch new file mode 100644 index 00000000..0b09b454 --- /dev/null +++ b/common/recipes-kernel/linux/files/0846-drm-amd-dal-Prevent-underflow-lock.patch @@ -0,0 +1,40 @@ +From 514f76d9dcfd503d00c0905303a4fb580f566dd9 Mon Sep 17 00:00:00 2001 +From: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> +Date: Fri, 26 Feb 2016 15:42:45 -0500 +Subject: [PATCH 0846/1110] drm/amd/dal: Prevent underflow lock + +Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> +Acked-by: Harry Wentland <harry.wentland@amd.com> +--- + drivers/gpu/drm/amd/dal/dc/dce110/dce110_timing_generator.c | 12 ++++-------- + 1 file changed, 4 insertions(+), 8 deletions(-) + +diff --git a/drivers/gpu/drm/amd/dal/dc/dce110/dce110_timing_generator.c b/drivers/gpu/drm/amd/dal/dc/dce110/dce110_timing_generator.c +index d4c5944..d554332 100644 +--- a/drivers/gpu/drm/amd/dal/dc/dce110/dce110_timing_generator.c ++++ b/drivers/gpu/drm/amd/dal/dc/dce110/dce110_timing_generator.c +@@ -273,17 +273,13 @@ bool dce110_timing_generator_enable_crtc(struct timing_generator *tg) + uint32_t value; + struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg); + +- value = dm_read_reg(tg->ctx, +- CRTC_REG(mmCRTC_MASTER_UPDATE_MODE)); +- set_reg_field_value(value, 0, +- CRTC_MASTER_UPDATE_MODE, MASTER_UPDATE_MODE); +- dm_write_reg(tg->ctx, +- CRTC_REG(mmCRTC_MASTER_UPDATE_MODE), value); +- +- /* TODO: may want this on for looking for underflow */ + value = 0; + dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_MASTER_UPDATE_MODE), value); + ++ /* TODO: may want this on to catch underflow */ ++ value = 0; ++ dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_MASTER_UPDATE_LOCK), value); ++ + result = tg->bp->funcs->enable_crtc(tg->bp, tg110->controller_id, true); + + return result == BP_RESULT_OK; +-- +2.7.4 + |