brcm2708: remove linux 4.4 support

[openwrt/staging/yousong.git] / target / linux / brcm2708 / patches-4.4 / 0540-drm-vc4-Use-drm_gem_object_unreference_unlocked.patch

diff --git a/target/linux/brcm2708/patches-4.4/0540-drm-vc4-Use-drm_gem_object_unreference_unlocked.patch b/target/linux/brcm2708/patches-4.4/0540-drm-vc4-Use-drm_gem_object_unreference_unlocked.patch
deleted file mode 100644 (file)
index f3ff1c5..0000000
--- a/target/linux/brcm2708/patches-4.4/0540-drm-vc4-Use-drm_gem_object_unreference_unlocked.patch
+++ /dev/null
@@ -1,76 +0,0 @@
-From 26b1bf12a8ed92c1f97b3da7919056c888e1e49d Mon Sep 17 00:00:00 2001
-From: Daniel Vetter <daniel.vetter@ffwll.ch>
-Date: Mon, 30 May 2016 19:53:06 +0200
-Subject: [PATCH] drm/vc4: Use drm_gem_object_unreference_unlocked
-
-Since my last struct_mutex crusade someone escaped!
-
-This already has the advantage that for the common case when someone
-else holds a ref the unref won't even acquire dev->struct_mutex. And
-I'm working on code to allow drivers to completely opt-out of any and
-all dev->struct_mutex usage, but that only works if they use the
-_unlocked variants everywhere.
-
-v2: Drop comment too.
-
-v3: Drop the other comment too.
-
-Cc: Eric Anholt <eric@anholt.net>
-Reviewed-by: Eric Anholt <eric@anholt.net>
-Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
-Link: http://patchwork.freedesktop.org/patch/msgid/1464630800-30786-15-git-send-email-daniel.vetter@ffwll.ch
-(cherry picked from commit db3697295cf4da1356e3ec86761d464d6d013b48)
----
- drivers/gpu/drm/vc4/vc4_bo.c  |  2 --
- drivers/gpu/drm/vc4/vc4_gem.c | 11 +++--------
- 2 files changed, 3 insertions(+), 10 deletions(-)
-
---- a/drivers/gpu/drm/vc4/vc4_bo.c
-+++ b/drivers/gpu/drm/vc4/vc4_bo.c
-@@ -311,8 +311,6 @@ static void vc4_bo_cache_free_old(struct
- 
- /* Called on the last userspace/kernel unreference of the BO.  Returns
-  * it to the BO cache if possible, otherwise frees it.
-- *
-- * Note that this is called with the struct_mutex held.
-  */
- void vc4_free_object(struct drm_gem_object *gem_bo)
- {
---- a/drivers/gpu/drm/vc4/vc4_gem.c
-+++ b/drivers/gpu/drm/vc4/vc4_gem.c
-@@ -67,10 +67,8 @@ vc4_free_hang_state(struct drm_device *d
- {
-       unsigned int i;
- 
--      mutex_lock(&dev->struct_mutex);
-       for (i = 0; i < state->user_state.bo_count; i++)
--              drm_gem_object_unreference(state->bo[i]);
--      mutex_unlock(&dev->struct_mutex);
-+              drm_gem_object_unreference_unlocked(state->bo[i]);
- 
-       kfree(state);
- }
-@@ -711,11 +709,9 @@ vc4_complete_exec(struct drm_device *dev
-       struct vc4_dev *vc4 = to_vc4_dev(dev);
-       unsigned i;
- 
--      /* Need the struct lock for drm_gem_object_unreference(). */
--      mutex_lock(&dev->struct_mutex);
-       if (exec->bo) {
-               for (i = 0; i < exec->bo_count; i++)
--                      drm_gem_object_unreference(&exec->bo[i]->base);
-+                      drm_gem_object_unreference_unlocked(&exec->bo[i]->base);
-               kfree(exec->bo);
-       }
- 
-@@ -723,9 +719,8 @@ vc4_complete_exec(struct drm_device *dev
-               struct vc4_bo *bo = list_first_entry(&exec->unref_list,
-                                                    struct vc4_bo, unref_head);
-               list_del(&bo->unref_head);
--              drm_gem_object_unreference(&bo->base.base);
-+              drm_gem_object_unreference_unlocked(&bo->base.base);
-       }
--      mutex_unlock(&dev->struct_mutex);
- 
-       mutex_lock(&vc4->power_lock);
-       if (--vc4->power_refcount == 0) {