From: Christian König <christian.koenig@amd.com>
Date: Sun, 7 Sep 2014 10:06:52 +0000 (+0200)
Subject: drm/radeon: fix semaphore value init
X-Git-Tag: v3.17-rc5~23^2~4^2~3
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f229407da79315c18a2f25f485e1a1b9fdda1e92;p=platform%2Fkernel%2Flinux-exynos.git

drm/radeon: fix semaphore value init

Semaphore values have 64 bits, not 32. This fixes a very subtle bug
that disables synchronization when the upper 32bits wasn't zero.

Signed-off-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
Reviewed-By: Grigori Goronzy <greg@chown.ath.cx>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/radeon/radeon_semaphore.c b/drivers/gpu/drm/radeon/radeon_semaphore.c
index 56d9fd6..abd6753 100644
--- a/drivers/gpu/drm/radeon/radeon_semaphore.c
+++ b/drivers/gpu/drm/radeon/radeon_semaphore.c
@@ -34,7 +34,7 @@
 int radeon_semaphore_create(struct radeon_device *rdev,
 			    struct radeon_semaphore **semaphore)
 {
-	uint32_t *cpu_addr;
+	uint64_t *cpu_addr;
 	int i, r;
 
 	*semaphore = kmalloc(sizeof(struct radeon_semaphore), GFP_KERNEL);