diff --git a/drm-radeon-Disable-writeback-by-default-on-ppc.patch b/drm-radeon-Disable-writeback-by-default-on-ppc.patch
deleted file mode 100644
index 3aa1b14..0000000
--- a/drm-radeon-Disable-writeback-by-default-on-ppc.patch
+++ /dev/null
@@ -1,88 +0,0 @@
-Bugzilla: N/A
-Upstream-status: Replaced by http://lists.freedesktop.org/archives/dri-devel/2013-December/050290.html in 3.14
-
-From b67e0a6a7409f9c1a12e573fb7d8d80ee455b103 Mon Sep 17 00:00:00 2001
-From: Adam Jackson <ajax@redhat.com>
-Date: Mon, 17 Jun 2013 09:59:34 -0400
-Subject: [PATCH] drm/radeon: Disable writeback by default on ppc
-
-At least on an IBM Power 720, this check passes, but several piglit
-tests will reliably trigger GPU resets due to the ring buffer pointers
-not being updated.  There's probably a better way to limit this to just
-affected machines though.
-
-Signed-off-by: Adam Jackson <ajax@redhat.com>
----
- drivers/gpu/drm/radeon/r600_cp.c       | 7 +++++++
- drivers/gpu/drm/radeon/radeon_cp.c     | 7 +++++++
- drivers/gpu/drm/radeon/radeon_device.c | 4 ++--
- drivers/gpu/drm/radeon/radeon_drv.c    | 2 +-
- 4 files changed, 17 insertions(+), 3 deletions(-)
-
-diff --git a/drivers/gpu/drm/radeon/r600_cp.c b/drivers/gpu/drm/radeon/r600_cp.c
-index 1c51c08..ef28532 100644
---- a/drivers/gpu/drm/radeon/r600_cp.c
-+++ b/drivers/gpu/drm/radeon/r600_cp.c
-@@ -552,6 +552,13 @@ static void r600_test_writeback(drm_radeon_private_t *dev_priv)
- 		dev_priv->writeback_works = 0;
- 		DRM_INFO("writeback test failed\n");
- 	}
-+#if defined(__ppc__) || defined(__ppc64__)
-+	/* the test might succeed on ppc, but it's usually not reliable */
-+	if (radeon_no_wb == -1) {
-+		radeon_no_wb = 1;
-+		DRM_INFO("not trusting writeback test due to arch quirk\n");
-+	}
-+#endif
- 	if (radeon_no_wb == 1) {
- 		dev_priv->writeback_works = 0;
- 		DRM_INFO("writeback forced off\n");
-diff --git a/drivers/gpu/drm/radeon/radeon_cp.c b/drivers/gpu/drm/radeon/radeon_cp.c
-index efc4f64..a967b33 100644
---- a/drivers/gpu/drm/radeon/radeon_cp.c
-+++ b/drivers/gpu/drm/radeon/radeon_cp.c
-@@ -892,6 +892,13 @@ static void radeon_test_writeback(drm_radeon_private_t * dev_priv)
- 		dev_priv->writeback_works = 0;
- 		DRM_INFO("writeback test failed\n");
- 	}
-+#if defined(__ppc__) || defined(__ppc64__)
-+	/* the test might succeed on ppc, but it's usually not reliable */
-+	if (radeon_no_wb == -1) {
-+		radeon_no_wb = 1;
-+		DRM_INFO("not trusting writeback test due to arch quirk\n");
-+	}
-+#endif
- 	if (radeon_no_wb == 1) {
- 		dev_priv->writeback_works = 0;
- 		DRM_INFO("writeback forced off\n");
-diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
-index 1899738..524046e 100644
---- a/drivers/gpu/drm/radeon/radeon_device.c
-+++ b/drivers/gpu/drm/radeon/radeon_device.c
-@@ -322,8 +322,8 @@ int radeon_wb_init(struct radeon_device *rdev)
- 	/* disable event_write fences */
- 	rdev->wb.use_event = false;
- 	/* disabled via module param */
--	if (radeon_no_wb == 1) {
--		rdev->wb.enabled = false;
-+	if (radeon_no_wb != -1) {
-+		rdev->wb.enabled = !!radeon_no_wb;
- 	} else {
- 		if (rdev->flags & RADEON_IS_AGP) {
- 			/* often unreliable on AGP */
-diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
-index 094e7e5..04809d4 100644
---- a/drivers/gpu/drm/radeon/radeon_drv.c
-+++ b/drivers/gpu/drm/radeon/radeon_drv.c
-@@ -146,7 +146,7 @@ static inline void radeon_register_atpx_handler(void) {}
- static inline void radeon_unregister_atpx_handler(void) {}
- #endif
- 
--int radeon_no_wb;
-+int radeon_no_wb = -1;
- int radeon_modeset = -1;
- int radeon_dynclks = -1;
- int radeon_r4xx_atom = 0;
--- 
-1.8.2.1
-
diff --git a/kernel.spec b/kernel.spec
index c656b24..466d3f3 100644
--- a/kernel.spec
+++ b/kernel.spec
@@ -616,8 +616,6 @@ Patch21247: ath9k_rx_dma_stop_check.patch
 
 Patch22000: weird-root-dentry-name-debug.patch
 
-Patch25047: drm-radeon-Disable-writeback-by-default-on-ppc.patch
-
 #rhbz 1025603
 Patch25063: disable-libdw-unwind-on-non-x86.patch
 
@@ -1335,8 +1333,6 @@ ApplyPatch criu-no-expert.patch
 #rhbz 892811
 ApplyPatch ath9k_rx_dma_stop_check.patch
 
-ApplyPatch drm-radeon-Disable-writeback-by-default-on-ppc.patch
-
 #rhbz 1025603
 ApplyPatch disable-libdw-unwind-on-non-x86.patch