Commit [0] stopped setting fix.smem_start and fix.smem_len when creating
the fbdev.
[0] 2f1eab8d8ab59e799f7d51d62410b398607a7bc3
drm/exynos/fbdev: don't set fix.smem/mmio_{start,len}
However, smem_len is used by some userland applications to calculate the
size for mmap. In particular, it is used by xf86-video-fbdev:
http://cgit.freedesktop.org/xorg/xserver/tree/hw/xfree86/fbdevhw/fbdevhw.c?id=xorg-server-1.15.99.903#n571
So, let's restore setting the smem_len to unbreak things for these users.
Note: we are still leaving smem_start set to 0.
Reported-by: Siarhei Siamashka <siarhei.siamashka@xxxxxxxxx>
Reported-by: Günther Noack <me@xxxxxxxxxxxxxxxx>
Signed-off-by: Daniel Kurtz <djkurtz@xxxxxxxxxxxx>
---
I am able to compile test this change, but would appreciate help testing it
on a system that uses xf86-video-fbdev.
Thanks!
drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
index 5a7cd8b..f865736 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
@@ -125,6 +125,7 @@ static int exynos_drm_fbdev_update(struct drm_fb_helper *helper,
fbi->screen_base = buffer->kvaddr;
fbi->screen_size = size;
+ fbi->fix.smem_len = size;
return 0;
}
--
2.1.0.rc2.206.gedb03e5
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