On Sun, Sep 7, 2014 at 6:06 AM, Christian König <deathsimple@xxxxxxxxxxx> wrote:
> From: Christian König <christian.koenig@xxxxxxx>
>
> 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@xxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx
Applied to my fixes tree. thanks!
Alex
> ---
> 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);
> --
> 1.9.1
>
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