From: Aric Cyr <aric....@amd.com>
[Why]
Coverity found various high-impact issues that need resolving.
[How]
Fix some buffer overruns and uninitialized variables.
Signed-off-by: Aric Cyr <aric....@amd.com>
Reviewed-by: Tony Cheng <tony.ch...@amd.com>
Acked-by: Leo Li <sunpeng...@amd.com>
---
drivers/gpu/drm/amd/display/dc/bios/bios_parser.c | 2 +-
drivers/gpu/drm/amd/display/dc/core/dc_debug.c | 7 +++----
drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | 6 +++---
3 files changed, 7 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/bios/bios_parser.c
b/drivers/gpu/drm/amd/display/dc/bios/bios_parser.c
index 0e1dc1b..c2ab026 100644
--- a/drivers/gpu/drm/amd/display/dc/bios/bios_parser.c
+++ b/drivers/gpu/drm/amd/display/dc/bios/bios_parser.c
@@ -2030,7 +2030,7 @@ static uint32_t get_src_obj_list(struct bios_parser *bp,
ATOM_OBJECT *object,
static struct device_id device_type_from_device_id(uint16_t device_id)
{
- struct device_id result_device_id;
+ struct device_id result_device_id = {0};
switch (device_id) {
case ATOM_DEVICE_LCD1_SUPPORT:
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_debug.c
b/drivers/gpu/drm/amd/display/dc/core/dc_debug.c
index e1ebdf7..73d0495 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_debug.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_debug.c
@@ -311,7 +311,7 @@ void context_timing_trace(
{
int i;
struct dc *core_dc = dc;
- int h_pos[MAX_PIPES], v_pos[MAX_PIPES];
+ int h_pos[MAX_PIPES] = {0}, v_pos[MAX_PIPES] = {0};
struct crtc_position position;
unsigned int underlay_idx = core_dc->res_pool->underlay_pipe_index;
DC_LOGGER_INIT(dc->ctx->logger);
@@ -322,8 +322,7 @@ void context_timing_trace(
/* get_position() returns CRTC vertical/horizontal counter
* hence not applicable for underlay pipe
*/
- if (pipe_ctx->stream == NULL
- || pipe_ctx->pipe_idx == underlay_idx)
+ if (pipe_ctx->stream == NULL || pipe_ctx->pipe_idx ==
underlay_idx)
continue;
pipe_ctx->stream_res.tg->funcs->get_position(pipe_ctx->stream_res.tg,
&position);
@@ -333,7 +332,7 @@ void context_timing_trace(
for (i = 0; i < core_dc->res_pool->pipe_count; i++) {
struct pipe_ctx *pipe_ctx = &res_ctx->pipe_ctx[i];
- if (pipe_ctx->stream == NULL)
+ if (pipe_ctx->stream == NULL || pipe_ctx->pipe_idx ==
underlay_idx)
continue;
TIMING_TRACE("OTG_%d H_tot:%d V_tot:%d H_pos:%d
V_pos:%d\n",
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
index e8c3620..de3c327 100644
--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
@@ -548,14 +548,14 @@ dce110_translate_regamma_to_hw_format(const struct
dc_transfer_func *output_tf,
regamma_params->hw_points_num = hw_points;
- i = 1;
- for (k = 0; k < 16 && i < 16; k++) {
+ k = 0;
+ for (i = 1; i < 16; i++) {
if (seg_distr[k] != -1) {
regamma_params->arr_curve_points[k].segments_num =
seg_distr[k];
regamma_params->arr_curve_points[i].offset =
regamma_params->arr_curve_points[k].offset + (1 << seg_distr[k]);
}
- i++;
+ k++;
}
if (seg_distr[k] != -1)
--
2.7.4
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