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drm/i915: Use offsetof() to calculate the offset of members in PVINFO page

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To get the offset of the members in PVINFO page, offsetof() looks much
better than the tricky approach in current code.

v7:

- Move "offsetof()" modification into a dedicated patch. (Joonas)

Suggested-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1466078825-6662-3-git-send-email-zhi.a.wang@intel.com
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Zhi Wang
2016-06-16 08:06:58 -04:00
committed by Chris Wilson
parent 87da603cae
commit b2a5d1e716
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/i915_pvinfo.h
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@ -104,7 +104,7 @@ struct vgt_if {
} __packed;
#define vgtif_reg(x) \
_MMIO((VGT_PVINFO_PAGE + (long)&((struct vgt_if *)NULL)->x))
_MMIO((VGT_PVINFO_PAGE + offsetof(struct vgt_if, x)))
/* vGPU display status to be used by the host side */
#define VGT_DRV_DISPLAY_NOT_READY 0