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drm/amd/display: Fix uninitialized variables in amdgpu_dm_debugfs

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[WHAT]
Some fields in struct dc_link_settings and link_training_settings are
not initialized and using them can cause unexpected results.

[HOW]
Initialize struct dc_link_settings and link_training_settings to zero.

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Hung 2024-12-05 20:57:04 -07:00 committed by Alex Deucher
parent 57a793a74f
commit 1b0cbcf888
1 changed files with 4 additions and 4 deletions
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8
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
View File

@ -258,7 +258,7 @@ static ssize_t dp_link_settings_write(struct file *f, const char __user *buf,
struct dc_link *link = connector->dc_link;
struct amdgpu_device *adev = drm_to_adev(connector->base.dev);
struct dc *dc = (struct dc *)link->dc;
struct dc_link_settings prefer_link_settings;
struct dc_link_settings prefer_link_settings = {0};
char *wr_buf = NULL;
const uint32_t wr_buf_size = 40;
/* 0: lane_count; 1: link_rate */
@ -389,7 +389,7 @@ static ssize_t dp_mst_link_setting(struct file *f, const char __user *buf,
struct dc_link *link = aconnector->dc_link;
struct amdgpu_device *adev = drm_to_adev(aconnector->base.dev);
struct dc *dc = (struct dc *)link->dc;
struct dc_link_settings prefer_link_settings;
struct dc_link_settings prefer_link_settings = {0};
char *wr_buf = NULL;
const uint32_t wr_buf_size = 40;
/* 0: lane_count; 1: link_rate */
@ -613,7 +613,7 @@ static ssize_t dp_phy_settings_write(struct file *f, const char __user *buf,
uint32_t wr_buf_size = 40;
long param[3];
bool use_prefer_link_setting;
struct link_training_settings link_lane_settings;
struct link_training_settings link_lane_settings = {0};
int max_param_num = 3;
uint8_t param_nums = 0;
int r = 0;
@ -768,7 +768,7 @@ static ssize_t dp_phy_test_pattern_debugfs_write(struct file *f, const char __us
LINK_RATE_UNKNOWN, LINK_SPREAD_DISABLED};
struct dc_link_settings cur_link_settings = {LANE_COUNT_UNKNOWN,
LINK_RATE_UNKNOWN, LINK_SPREAD_DISABLED};
struct link_training_settings link_training_settings;
struct link_training_settings link_training_settings = {0};
int i;
if (size == 0)