Merge branch 'poll' into staging/for_v3.4

* poll: (5970 commits)
  poll: add poll_requested_events() and poll_does_not_wait() functions
  crc32: select an algorithm via Kconfig
  crc32: add self-test code for crc32c
  crypto: crc32c should use library implementation
  crc32: bolt on crc32c
  crc32: add note about this patchset to crc32.c
  crc32: optimize loop counter for x86
  crc32: add slice-by-8 algorithm to existing code
  crc32: make CRC_*_BITS definition correspond to actual bit counts
  crc32: fix mixing of endian-specific types
  crc32: miscellaneous cleanups
  crc32: simplify unit test code
  crc32: move long comment about crc32 fundamentals to Documentation/
  crc32: remove two instances of trailing whitespaces
  checkpatch: check for quoted strings broken across lines
  checkpatch: whitespace - add/remove blank lines
  checkpatch: warn on use of yield()
  checkpatch: add --strict tests for braces, comments and casts
  checkpatch: add [] to type extensions
  checkpatch: high precedence operators do not require additional parentheses in #defines
  ...

1 files changed, 23 insertions, 7 deletions

diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
index fb8e46b4e8bc..b7adb4a967fd 100644
--- a/drivers/gpu/drm/drm_modes.c
+++ b/drivers/gpu/drm/drm_modes.c
@@ -686,8 +686,6 @@ void drm_mode_set_crtcinfo(struct drm_display_mode *p, int adjust_flags)
                         p->crtc_vsync_end /= 2;
                         p->crtc_vtotal /= 2;
                 }
-
-                p->crtc_vtotal |= 1;
         }
 
         if (p->flags & DRM_MODE_FLAG_DBLSCAN) {
@@ -716,6 +714,27 @@ EXPORT_SYMBOL(drm_mode_set_crtcinfo);
 
 
 /**
+ * drm_mode_copy - copy the mode
+ * @dst: mode to overwrite
+ * @src: mode to copy
+ *
+ * LOCKING:
+ * None.
+ *
+ * Copy an existing mode into another mode, preserving the object id
+ * of the destination mode.
+ */
+void drm_mode_copy(struct drm_display_mode *dst, const struct drm_display_mode *src)
+{
+        int id = dst->base.id;
+
+        *dst = *src;
+        dst->base.id = id;
+        INIT_LIST_HEAD(&dst->head);
+}
+EXPORT_SYMBOL(drm_mode_copy);
+
+/**
  * drm_mode_duplicate - allocate and duplicate an existing mode
  * @m: mode to duplicate
  *
@@ -729,16 +748,13 @@ struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev,
                                             const struct drm_display_mode *mode)
 {
         struct drm_display_mode *nmode;
-        int new_id;
 
         nmode = drm_mode_create(dev);
         if (!nmode)
                 return NULL;
 
-        new_id = nmode->base.id;
-        *nmode = *mode;
-        nmode->base.id = new_id;
-        INIT_LIST_HEAD(&nmode->head);
+        drm_mode_copy(nmode, mode);
+
         return nmode;
 }
 EXPORT_SYMBOL(drm_mode_duplicate);