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path: root/drivers/gpu/drm/i915/selftests/i915_random.c
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Diffstat (limited to 'drivers/gpu/drm/i915/selftests/i915_random.c')
-rw-r--r--drivers/gpu/drm/i915/selftests/i915_random.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/selftests/i915_random.c b/drivers/gpu/drm/i915/selftests/i915_random.c
index c17c83c30637..d044bf9a6feb 100644
--- a/drivers/gpu/drm/i915/selftests/i915_random.c
+++ b/drivers/gpu/drm/i915/selftests/i915_random.c
@@ -30,6 +30,17 @@
#include "i915_random.h"
+u64 i915_prandom_u64_state(struct rnd_state *rnd)
+{
+ u64 x;
+
+ x = prandom_u32_state(rnd);
+ x <<= 32;
+ x |= prandom_u32_state(rnd);
+
+ return x;
+}
+
static inline u32 i915_prandom_u32_max_state(u32 ep_ro, struct rnd_state *state)
{
return upper_32_bits((u64)prandom_u32_state(state) * ep_ro);