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drm/amd/display: Check for NULL when creating gamma struct

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[Wjy&How] Some stress test is causing unexpected memory allocation
failure. This prevents null dereference but there will likely be problems
later, hard to gracefully handle memalloc fail for critical objects.

Signed-off-by: Krunoslav Kovac <Krunoslav.Kovac@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Acked-by: Reza Amini <Reza.Amini@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Krunoslav Kovac 2019-01-02 14:12:53 -05:00 committed by Alex Deucher
parent 5dc3fc5a78
commit ccab121723
1 changed files with 6 additions and 3 deletions
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9
drivers/gpu/drm/amd/display/dc/core/dc_surface.c
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@ -40,11 +40,14 @@ static void construct(struct dc_context *ctx, struct dc_plane_state *plane_state
plane_state->ctx = ctx;
plane_state->gamma_correction = dc_create_gamma();
plane_state->gamma_correction->is_identity = true;
if (plane_state->gamma_correction != NULL)
plane_state->gamma_correction->is_identity = true;
plane_state->in_transfer_func = dc_create_transfer_func();
plane_state->in_transfer_func->type = TF_TYPE_BYPASS;
plane_state->in_transfer_func->ctx = ctx;
if (plane_state->in_transfer_func != NULL) {
plane_state->in_transfer_func->type = TF_TYPE_BYPASS;
plane_state->in_transfer_func->ctx = ctx;
}
}
static void destruct(struct dc_plane_state *plane_state)