drm/ast: cursor: Drop page alignment

The cursor scanout address requires alignment to a multiple of 8,
but does not require page alignment. Change the offset calculation
accordingly. Frees up a few more bytes for the primary framebuffer.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250305163207.267650-8-tzimmermann@suse.de

diff --git a/drivers/gpu/drm/ast/ast_cursor.c b/drivers/gpu/drm/ast/ast_cursor.c
index cb0c48d..5ee724b 100644 (file)
--- a/drivers/gpu/drm/ast/ast_cursor.c
+++ b/drivers/gpu/drm/ast/ast_cursor.c
@@ -58,7 +58,7 @@ long ast_cursor_vram_offset(struct ast_device *ast)
        if (size > ast->vram_size)
                return -EINVAL;
 
-       return PAGE_ALIGN_DOWN(ast->vram_size - size);
+       return ALIGN_DOWN(ast->vram_size - size, SZ_8);
 }
 
 static u32 ast_cursor_calculate_checksum(const void *src, unsigned int width, unsigned int height)