[PATCH 5.10 116/299] drm/ast: Fix invalid usage of AST_MAX_HWC_WIDTH in cursor atomic_check

[Greg Kroah-Hartman]

From: Thomas Zimmermann <tzimmermann@xxxxxxx>

[ Upstream commit ee4a92d690f30f3793df942939726bec0338e65b ]

Use AST_MAX_HWC_HEIGHT for setting offset_y in the cursor plane's
atomic_check. The code used AST_MAX_HWC_WIDTH instead. This worked
because both constants has the same value.

Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
Acked-by: Gerd Hoffmann <kraxel@xxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20210209134632.12157-3-tzimmermann@xxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/gpu/drm/ast/ast_mode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c
index 0a1e1cf57e19..a3c2f76668ab 100644
--- a/drivers/gpu/drm/ast/ast_mode.c
+++ b/drivers/gpu/drm/ast/ast_mode.c
@@ -688,7 +688,7 @@ ast_cursor_plane_helper_atomic_update(struct drm_plane *plane,
 	unsigned int offset_x, offset_y;
 
 	offset_x = AST_MAX_HWC_WIDTH - fb->width;
-	offset_y = AST_MAX_HWC_WIDTH - fb->height;
+	offset_y = AST_MAX_HWC_HEIGHT - fb->height;
 
 	if (state->fb != old_state->fb) {
 		/* A new cursor image was installed. */
-- 
2.30.2