6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Gabe Teeger <Gabe.Teeger@xxxxxxx>
commit e80f8f491df873ea2e07c941c747831234814612 upstream.
This reverts commit a15268787b79 ("drm/amd/display: Avoid overflow assignment in link_dp_cts")
Due to regression causing DPMS hang.
Reviewed-by: Alex Hung <alex.hung@xxxxxxx>
Signed-off-by: Gabe Teeger <Gabe.Teeger@xxxxxxx>
Signed-off-by: Wayne Lin <wayne.lin@xxxxxxx>
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/display/dc/dc_dp_types.h | 2 +-
drivers/gpu/drm/amd/display/dc/link/accessories/link_dp_cts.c | 3 +--
drivers/gpu/drm/amd/display/include/dpcd_defs.h | 1 -
3 files changed, 2 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/amd/display/dc/dc_dp_types.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_dp_types.h
@@ -721,7 +721,7 @@ struct dp_audio_test_data_flags {
struct dp_audio_test_data {
struct dp_audio_test_data_flags flags;
- uint32_t sampling_rate;
+ uint8_t sampling_rate;
uint8_t channel_count;
uint8_t pattern_type;
uint8_t pattern_period[8];
--- a/drivers/gpu/drm/amd/display/dc/link/accessories/link_dp_cts.c
+++ b/drivers/gpu/drm/amd/display/dc/link/accessories/link_dp_cts.c
@@ -849,8 +849,7 @@ bool dp_set_test_pattern(
core_link_read_dpcd(link, DP_TRAINING_PATTERN_SET,
&training_pattern.raw,
sizeof(training_pattern));
- if (pattern <= PHY_TEST_PATTERN_END_DP11)
- training_pattern.v1_3.LINK_QUAL_PATTERN_SET = pattern;
+ training_pattern.v1_3.LINK_QUAL_PATTERN_SET = pattern;
core_link_write_dpcd(link, DP_TRAINING_PATTERN_SET,
&training_pattern.raw,
sizeof(training_pattern));
--- a/drivers/gpu/drm/amd/display/include/dpcd_defs.h
+++ b/drivers/gpu/drm/amd/display/include/dpcd_defs.h
@@ -76,7 +76,6 @@ enum dpcd_phy_test_patterns {
PHY_TEST_PATTERN_D10_2,
PHY_TEST_PATTERN_SYMBOL_ERROR,
PHY_TEST_PATTERN_PRBS7,
- PHY_TEST_PATTERN_END_DP11 = PHY_TEST_PATTERN_PRBS7,
PHY_TEST_PATTERN_80BIT_CUSTOM,/* For DP1.2 only */
PHY_TEST_PATTERN_CP2520_1,
PHY_TEST_PATTERN_CP2520_2,
