X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=kernel%2Fdma%2Fswiotlb.c;h=394494a6b1f35cc7038a2c3ffa00d3984eedd334;hb=d069ed288ac74c24e2b1c294aa9445c80ed6c518;hp=50a0e9c45c39afd295a7f6ec01a156a5b767c13f;hpb=f94cb36e760d2a4d359ad64f5fafc62ca755fd72;p=platform%2Fkernel%2Flinux-rpi.git

diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
index 50a0e9c..394494a 100644
--- a/kernel/dma/swiotlb.c
+++ b/kernel/dma/swiotlb.c
@@ -903,9 +903,7 @@ static inline phys_addr_t slot_addr(phys_addr_t start, phys_addr_t idx)
  */
 static inline unsigned long get_max_slots(unsigned long boundary_mask)
 {
-	if (boundary_mask == ~0UL)
-		return 1UL << (BITS_PER_LONG - IO_TLB_SHIFT);
-	return nr_slots(boundary_mask + 1);
+	return (boundary_mask >> IO_TLB_SHIFT) + 1;
 }
 
 static unsigned int wrap_area_index(struct io_tlb_pool *mem, unsigned int index)