i915: Replace "hweight8(dev_priv->info.subslice_7eu[i]) != 1" with "!is_power_of_2...

Signed-off-by: Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1449397590-14292-1-git-send-email-zhaoxiu.zeng@gmail.com

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 57d78f264b53c7e0be0969a4c782d5a0dbfc97dc..e5359ebfb1bece4aef5c7cdae021a15562155ec6 100644 (file)
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -27,6 +27,7 @@
  *
  */
 
+#include <linux/log2.h>
 #include <drm/drmP.h>
 #include "i915_drv.h"
 #include <drm/i915_drm.h>
@@ -995,7 +996,7 @@ static int skl_tune_iz_hashing(struct intel_engine_cs *ring)
                 * Only consider slices where one, and only one, subslice has 7
                 * EUs
                 */
-               if (hweight8(dev_priv->info.subslice_7eu[i]) != 1)
+               if (!is_power_of_2(dev_priv->info.subslice_7eu[i]))
                        continue;
 
                /*