1 files changed, 3 insertions, 3 deletions

diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 795472d8ae24..437eedb5a53b 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -485,7 +485,7 @@ do_unmap_single(struct device *hwdev, char *dma_addr, size_t size, int dir)
 
         /*
          * Return the buffer to the free list by setting the corresponding
-         * entries to indicate the number of contigous entries available.
+         * entries to indicate the number of contiguous entries available.
          * While returning the entries to the free list, we merge the entries
          * with slots below and above the pool being returned.
          */
@@ -549,7 +549,7 @@ swiotlb_alloc_coherent(struct device *hwdev, size_t size,
                 dma_mask = hwdev->coherent_dma_mask;
 
         ret = (void *)__get_free_pages(flags, order);
-        if (ret && swiotlb_virt_to_bus(hwdev, ret) + size > dma_mask) {
+        if (ret && swiotlb_virt_to_bus(hwdev, ret) + size - 1 > dma_mask) {
                 /*
                  * The allocated memory isn't reachable by the device.
                  */
@@ -571,7 +571,7 @@ swiotlb_alloc_coherent(struct device *hwdev, size_t size,
         dev_addr = swiotlb_virt_to_bus(hwdev, ret);
 
         /* Confirm address can be DMA'd by device */
-        if (dev_addr + size > dma_mask) {
+        if (dev_addr + size - 1 > dma_mask) {
                 printk("hwdev DMA mask = 0x%016Lx, dev_addr = 0x%016Lx\n",
                        (unsigned long long)dma_mask,
                        (unsigned long long)dev_addr);