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drm/i915: Remove __I915__ magic macro 

And at the same time introduce a static inline helper for
more type safety.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1479286545-15020-2-git-send-email-tvrtko.ursulin@linux.intel.com
This commit is contained in:
Tvrtko Ursulin 2016-11-16 08:55:45 +00:00
parent 801388cb16
commit 5ca43ef00f
1 changed files with 7 additions and 12 deletions
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19
drivers/gpu/drm/i915/i915_drv.h
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@ -2372,18 +2372,13 @@ struct drm_i915_cmd_table {
int count;
};
/* Note that the (struct drm_i915_private *) cast is just to shut up gcc. */
#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)
static inline const struct intel_device_info *
intel_info(const struct drm_i915_private *dev_priv)
{
return &dev_priv->info;
}
#define INTEL_INFO(dev_priv) intel_info((dev_priv))
#define INTEL_GEN(dev_priv) ((dev_priv)->info.gen)
#define INTEL_DEVID(dev_priv) ((dev_priv)->info.device_id)