From 18ac700d75e81b7892c6377f6d8b917453ac69fd Mon Sep 17 00:00:00 2001
From: Thomas Zimmermann <tzimmermann@suse.de>
Date: Wed, 10 Nov 2021 11:36:59 +0100
Subject: drm/fb-helper: Allocate shadow buffer of surface height
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Allocating a shadow buffer of the height of the buffer object does
not support fbdev overallocation. Use surface height instead.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20211110103702.374-7-tzimmermann@suse.de
---
 drivers/gpu/drm/drm_fb_helper.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers/gpu/drm/drm_fb_helper.c')

diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 3ab078321045..442db735416f 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -2332,7 +2332,7 @@ static int drm_fb_helper_generic_probe(struct drm_fb_helper *fb_helper,
 		return PTR_ERR(fbi);
 
 	fbi->fbops = &drm_fbdev_fb_ops;
-	fbi->screen_size = fb->height * fb->pitches[0];
+	fbi->screen_size = sizes->surface_height * fb->pitches[0];
 	fbi->fix.smem_len = fbi->screen_size;
 
 	drm_fb_helper_fill_info(fbi, fb_helper, sizes);
-- 
cgit