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gma500: Don't try and take a GEM handle of a non GEM fb

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The initial GMA500 framebuffer is not GEM but stolen memory. We can't
therefore take a GEM handle of it. Stop anyone trying to do this and causing
a crash.

Ideally we need a way to have GEM handles to non GEM objects but it's not
clear how and if GEM and the modesetting/fb interfaces it provides are
supposed to or indeed if they can handle it.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Cox 2011-05-13 11:08:26 +01:00 committed by Greg Kroah-Hartman
parent 3a229fd54d
commit 4f0c8f43ee
1 changed files with 2 additions and 0 deletions
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2
drivers/staging/gma500/psb_fb.c
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@ -648,6 +648,8 @@ static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
{
struct psb_framebuffer *psbfb = to_psb_fb(fb);
struct gtt_range *r = psbfb->gtt;
if (r->stolen)
return -EOPNOTSUPP;
return drm_gem_handle_create(file_priv, &r->gem, handle);
}