drm/ast: Use offset-adjusted shadow-plane mappings

For framebuffers with non-zero offset fields, shadow-plane helpers
provide a pointer to the first byte of the contained data. Use it in
ast.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210803125928.27780-3-tzimmermann@suse.de

diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c
index 15319967164e48d32d03a3842787e198cf82351d..6bfaefa018182e4fef3aedd7b8d62a503da5c7a6 100644 (file)
--- a/drivers/gpu/drm/ast/ast_mode.c
+++ b/drivers/gpu/drm/ast/ast_mode.c
@@ -808,7 +808,7 @@ ast_cursor_plane_helper_atomic_update(struct drm_plane *plane,
                ast_cursor_plane->hwc[ast_cursor_plane->next_hwc_index].map;
        u64 dst_off =
                ast_cursor_plane->hwc[ast_cursor_plane->next_hwc_index].off;
-       struct dma_buf_map src_map = shadow_plane_state->map[0];
+       struct dma_buf_map src_map = shadow_plane_state->data[0];
        unsigned int offset_x, offset_y;
        u16 x, y;
        u8 x_offset, y_offset;