drm/amd/display: Reduce stack size of commit_planes_to_stream

This function likes to blow 1024 stack size when something is
added to the addr struct. For now just dynamically allocate.

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>

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index ff6bd384aece1f2ad2e1a70be8fc7557e4024540..7a0593d4ca62f9090de8b4da893951b9c230e536 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -926,9 +926,9 @@ bool dc_commit_planes_to_stream(
                struct dc_state *state)
 {
        struct dc_surface_update updates[MAX_SURFACES];
-       struct dc_flip_addrs flip_addr[MAX_SURFACES];
-       struct dc_plane_info plane_info[MAX_SURFACES];
-       struct dc_scaling_info scaling_info[MAX_SURFACES];
+       struct dc_flip_addrs *flip_addr;
+       struct dc_plane_info *plane_info;
+       struct dc_scaling_info *scaling_info;
        int i;
        struct dc_stream_update *stream_update =
                        kzalloc(sizeof(struct dc_stream_update), GFP_KERNEL);
@@ -938,10 +938,14 @@ bool dc_commit_planes_to_stream(
                return false;
        }
 
+       flip_addr = kcalloc(MAX_SURFACES, sizeof(struct dc_flip_addrs),
+                           GFP_KERNEL);
+       plane_info = kcalloc(MAX_SURFACES, sizeof(struct dc_plane_info),
+                            GFP_KERNEL);
+       scaling_info = kcalloc(MAX_SURFACES, sizeof(struct dc_scaling_info),
+                              GFP_KERNEL);
+
        memset(updates, 0, sizeof(updates));
-       memset(flip_addr, 0, sizeof(flip_addr));
-       memset(plane_info, 0, sizeof(plane_info));
-       memset(scaling_info, 0, sizeof(scaling_info));
 
        stream_update->src = dc_stream->src;
        stream_update->dst = dc_stream->dst;
@@ -980,6 +984,9 @@ bool dc_commit_planes_to_stream(
                        new_plane_count,
                        dc_stream, stream_update, plane_states, state);
 
+       kfree(flip_addr);
+       kfree(plane_info);
+       kfree(scaling_info);
        kfree(stream_update);
        return true;
 }