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drm/exynos: fbdev: Remove offset into screen_buffer

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The screen_buffer field in struct fb_info contains the kernel address
of the first byte of framebuffer memory. Do not add the display offset.
This offset only describes scrolling during scanout.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: 19c8b8343d ("drm/exynos: fixed overlay data updating.")
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-samsung-soc@vger.kernel.org
Cc: <stable@vger.kernel.org> # v3.2+
This commit is contained in:
Thomas Zimmermann 2026-05-11 13:54:31 +02:00 committed by Inki Dae
parent 5633d4402c
commit 760bbc58c2
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GPG Key ID: C5601BECE83FF9B6
1 changed files with 1 additions and 5 deletions
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6
drivers/gpu/drm/exynos/exynos_drm_fbdev.c
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@ -61,17 +61,13 @@ static int exynos_drm_fbdev_update(struct drm_fb_helper *helper,
struct fb_info *fbi = helper->info;
struct drm_framebuffer *fb = helper->fb;
unsigned int size = fb->width * fb->height * fb->format->cpp[0];
unsigned long offset;
fbi->fbops = &exynos_drm_fb_ops;
drm_fb_helper_fill_info(fbi, helper, sizes);
offset = fbi->var.xoffset * fb->format->cpp[0];
offset += fbi->var.yoffset * fb->pitches[0];
fbi->flags |= FBINFO_VIRTFB;
fbi->screen_buffer = exynos_gem->kvaddr + offset;
fbi->screen_buffer = exynos_gem->kvaddr;
fbi->screen_size = size;
fbi->fix.smem_len = size;