diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2013-02-22 16:12:51 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-03-03 19:49:11 +0100 |
| commit | 2bb4629add2e648f1822872cce72f0fe163ce605 (patch) | |
| tree | 019ee35e089baacdefa33211798825fa3ea5953c /drivers/gpu/drm/i915/i915_drv.h | |
| parent | 83f377abed03e46eb3b6ce14a91291e7cdf86647 (diff) | |
drm/i915: Add to_user_ptr()
to_user_ptr() simply casts a pointer passed as u64 from user space
to void __user * correctly. Using this lets us get rid of all the
tiresome casts.
The idea came from Chris Wilson <chris@chris-wilson.co.uk>.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 62b15f817792..669a535e82f3 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1899,4 +1899,9 @@ static inline uint32_t i915_vgacntrl_reg(struct drm_device *dev) return VGACNTRL; } +static inline void __user *to_user_ptr(u64 address) +{ + return (void __user *)(uintptr_t)address; +} + #endif |