Merge branch 'etnaviv/next' of https://git.pengutronix.de/git/lst/linux into drm...

[sfrench/cifs-2.6.git] / drivers / gpu / drm / etnaviv / etnaviv_gem.c

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.c b/drivers/gpu/drm/etnaviv/etnaviv_gem.c
index d6fb724fc3ccc9ca8760c8590f7c963a9d134dc7..9a3bea738330208841b4e2a7a50aa73f8999c64d 100644 (file)
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.c
@@ -411,16 +411,20 @@ int etnaviv_gem_cpu_prep(struct drm_gem_object *obj, u32 op,
        struct etnaviv_gem_object *etnaviv_obj = to_etnaviv_bo(obj);
        struct drm_device *dev = obj->dev;
        bool write = !!(op & ETNA_PREP_WRITE);
-       unsigned long remain =
-               op & ETNA_PREP_NOSYNC ? 0 : etnaviv_timeout_to_jiffies(timeout);
-       long lret;
-
-       lret = reservation_object_wait_timeout_rcu(etnaviv_obj->resv,
-                                                  write, true, remain);
-       if (lret < 0)
-               return lret;
-       else if (lret == 0)
-               return remain == 0 ? -EBUSY : -ETIMEDOUT;
+       int ret;
+
+       if (op & ETNA_PREP_NOSYNC) {
+               if (!reservation_object_test_signaled_rcu(etnaviv_obj->resv,
+                                                         write))
+                       return -EBUSY;
+       } else {
+               unsigned long remain = etnaviv_timeout_to_jiffies(timeout);
+
+               ret = reservation_object_wait_timeout_rcu(etnaviv_obj->resv,
+                                                         write, true, remain);
+               if (ret <= 0)
+                       return ret == 0 ? -ETIMEDOUT : ret;
+       }
 
        if (etnaviv_obj->flags & ETNA_BO_CACHED) {
                if (!etnaviv_obj->sgt) {