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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
This commit is contained in:
Thomas Zimmermann
2021-11-10 11:36:59 +01:00
parent 19b20a8021
commit 18ac700d75
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/drm_fb_helper.c
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@@ -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);