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authorZhi Wang <zhi.a.wang@intel.com>2016-06-16 08:06:58 -0400
committerChris Wilson <chris@chris-wilson.co.uk>2016-06-17 19:44:25 +0100
commitb2a5d1e7162889ad28a2bd96fb556540866f599c (patch)
tree0b3c5271738c4ab1a8faf20d0e6b1e97a1916ab9 /drivers/gpu/drm/i915/i915_pvinfo.h
parent87da603cae438a20d4c0965794c0d3ed8c410893 (diff)
downloadlinux-sh-b2a5d1e7162889ad28a2bd96fb556540866f599c.tar.gz
drm/i915: Use offsetof() to calculate the offset of members in PVINFO page
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>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_pvinfo.h')
-rw-r--r--drivers/gpu/drm/i915/i915_pvinfo.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_pvinfo.h b/drivers/gpu/drm/i915/i915_pvinfo.h
index e61144d45a94..c0cb2974caac 100644
--- a/drivers/gpu/drm/i915/i915_pvinfo.h
+++ b/drivers/gpu/drm/i915/i915_pvinfo.h
@@ -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