From: Christian König christian.koenig@amd.com
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 --- drivers/gpu/drm/radeon/radeon_semaphore.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
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);