drm/ttm: use ffs in ttm_mem_type_from_place (5d98d0bc) · Commits · 戴 / test

A bit pointless to search for the first bit set manually. Signed-off-by:

drivers/gpu/drm/ttm/ttm_bo.c

+7 −7

Original line number	Diff line number	Diff line
		@@ -57,14 +57,14 @@ static struct attribute ttm_bo_count = {
		static inline int ttm_mem_type_from_place(const struct ttm_place *place,
		uint32_t *mem_type)
		{
		int i;
		int pos;

		for (i = 0; i <= TTM_PL_PRIV5; i++)
		if (place->flags & (1 << i)) {
		*mem_type = i;
		return 0;
		}
		pos = ffs(place->flags & TTM_PL_MASK_MEM);
		if (unlikely(!pos))
		return -EINVAL;

		*mem_type = pos - 1;
		return 0;
		}

		static void ttm_mem_type_debug(struct ttm_bo_device *bdev, int mem_type)