diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index eb99a109c0b..2af0071efb3 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2004,8 +2004,16 @@ struct drm_i915_cmd_table { }; /* Note that the (struct drm_i915_private *) cast is just to shut up gcc. */ -#define __I915__(p) ((sizeof(*(p)) == sizeof(struct drm_i915_private)) ? \ - (struct drm_i915_private *)(p) : to_i915(p)) +#define __I915__(p) ({ \ + struct drm_i915_private *__p; \ + if (__builtin_types_compatible_p(typeof(*p), struct drm_i915_private)) \ + __p = (struct drm_i915_private *)p; \ + else if (__builtin_types_compatible_p(typeof(*p), struct drm_device)) \ + __p = to_i915((struct drm_device *)p); \ + else \ + BUILD_BUG(); \ + __p; \ +}) #define INTEL_INFO(p) (&__I915__(p)->info) #define INTEL_DEVID(p) (INTEL_INFO(p)->device_id) |