diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2014-08-09 22:18:43 +0400 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-08-11 15:44:48 +0400 |
| commit | dbbe91279511d6a18a521b953a3c139e4787e660 (patch) | |
| tree | 688df67fbdf4e5ef02bcd68ec07d699463d8075a /drivers | |
| parent | 9bec9b1334d687c0a9fcf3d3a1987a61b4826a45 (diff) | |
| download | linux-dbbe91279511d6a18a521b953a3c139e4787e660.tar.xz | |
drm/i915: Agnostic INTEL_INFO
Adapt the macro so that we can pass either the struct drm_device or the
struct drm_i915_private pointers and get the answer we want. Over time,
my plan is to convert all users over to using drm_i915_private and so
trimming down the pointer dance. Having spent a few hours chasing that
goal and achieved over 8k of object code saving, it appears to be a
worthwhile target. This interim macro allows us to slowly convert over.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: Drop the (struct drm_device *) cast per the m-l discussion.
Also explain the seemingly unecessary first cast.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_dma.c | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 5 |
2 files changed, 7 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 1867e2619e73..1763fbf34e1d 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -1596,6 +1596,9 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) if (!drm_core_check_feature(dev, DRIVER_MODESET) && !dev->agp) return -EINVAL; + /* For the ugly agnostic INTEL_INFO macro */ + BUILD_BUG_ON(sizeof(*dev_priv) == sizeof(*dev)); + dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL); if (dev_priv == NULL) return -ENOMEM; diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 8a55f07d80cb..6959c1b2d648 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1981,7 +1981,10 @@ struct drm_i915_cmd_table { int count; }; -#define INTEL_INFO(p) (&to_i915(p)->info) +/* 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 INTEL_INFO(p) (&__I915__(p)->info) #define INTEL_DEVID(p) (INTEL_INFO(p)->device_id) #define IS_I830(dev) (INTEL_DEVID(dev) == 0x3577) |