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drm/exynos/fbdev: set smem_len for fbdev 

Commit [0] stopped setting fix.smem_start and fix.smem_len when creating
the fbdev.

[0] 2f1eab8d8a
  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@gmail.com>
Reported-by: Gunther Noack <me@guenthernoack.de>
Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
hifive-unleashed-5.1
Daniel Kurtz 2014-09-01 21:28:00 +09:00 committed by Inki Dae
parent 025d8e1348
commit 71b1f1956b
1 changed files with 1 additions and 0 deletions
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drivers/gpu/drm/exynos/exynos_drm_fbdev.c
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@ -123,6 +123,7 @@ static int exynos_drm_fbdev_update(struct drm_fb_helper *helper,
fbi->screen_base = buffer->kvaddr + offset;
fbi->screen_size = size;
fbi->fix.smem_len = size;
return 0;
}