Otherwise a pde_shift big enough to overflow a u32 will be truncated before assignment
Signed-off-by: Alan Cox alan@linux.intel.com --- drivers/gpu/drm/i915/i915_gem_gtt.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.h b/drivers/gpu/drm/i915/i915_gem_gtt.h index 66a6da2..368d111 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.h +++ b/drivers/gpu/drm/i915/i915_gem_gtt.h @@ -418,7 +418,7 @@ static inline uint32_t i915_pte_index(uint64_t address, uint32_t pde_shift) static inline uint32_t i915_pte_count(uint64_t addr, size_t length, uint32_t pde_shift) { - const uint64_t mask = ~((1 << pde_shift) - 1); + const uint64_t mask = ~((1ULL << pde_shift) - 1); uint64_t end;
WARN_ON(length == 0);