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drm/amd/display: Fix couple more inconsistent NULL checks in dc_resource 

Found by smatch:
drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_resource.c:1001
acquire_free_pipe_for_stream() error: we previously assumed 'head_pipe'
could be null (see line 998)
drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_resource.c:1808
dc_validate_global_state() error: we previously assumed 'new_ctx' could
be null (see line 1778)

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Harry Wentland 2017-11-10 20:35:27 -05:00 committed by Alex Deucher
parent edf38b58ec
commit e41ab0309a
1 changed files with 7 additions and 2 deletions
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9
drivers/gpu/drm/amd/display/dc/core/dc_resource.c
View File

@ -993,8 +993,10 @@ static struct pipe_ctx *acquire_free_pipe_for_stream(
head_pipe = resource_get_head_pipe_for_stream(res_ctx, stream);
if (!head_pipe)
if (!head_pipe) {
ASSERT(0);
return NULL;
}
if (!head_pipe->plane_state)
return head_pipe;
@ -1772,13 +1774,16 @@ enum dc_status dc_validate_global_state(
enum dc_status result = DC_ERROR_UNEXPECTED;
int i, j;
if (!new_ctx)
return DC_ERROR_UNEXPECTED;
if (dc->res_pool->funcs->validate_global) {
result = dc->res_pool->funcs->validate_global(dc, new_ctx);
if (result != DC_OK)
return result;
}
for (i = 0; new_ctx && i < new_ctx->stream_count; i++) {
for (i = 0; i < new_ctx->stream_count; i++) {
struct dc_stream_state *stream = new_ctx->streams[i];
for (j = 0; j < dc->res_pool->pipe_count; j++) {