Use offset_in_page macro instead of (addr & ~PAGE_MASK).
Signed-off-by: Geliang Tang <geliangt...@163.com>
---
drivers/staging/rdma/ipath/ipath_user_sdma.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/rdma/ipath/ipath_user_sdma.c
b/drivers/staging/rdma/ipath/ipath_user_sdma.c
index cc04b7b..e82b3ee 100644
--- a/drivers/staging/rdma/ipath/ipath_user_sdma.c
+++ b/drivers/staging/rdma/ipath/ipath_user_sdma.c
@@ -239,7 +239,7 @@ static int ipath_user_sdma_num_pages(const struct iovec
*iov)
/* truncate length to page boundary */
static int ipath_user_sdma_page_length(unsigned long addr, unsigned long len)
{
- const unsigned long offset = addr & ~PAGE_MASK;
+ const unsigned long offset = offset_in_page(addr);
return ((offset + len) > PAGE_SIZE) ? (PAGE_SIZE - offset) : len;
}
@@ -298,7 +298,7 @@ static int ipath_user_sdma_pin_pages(const struct
ipath_devdata *dd,
dma_addr_t dma_addr =
dma_map_page(&dd->pcidev->dev,
pages[j], 0, flen, DMA_TO_DEVICE);
- unsigned long fofs = addr & ~PAGE_MASK;
+ unsigned long fofs = offset_in_page(addr);
if (dma_mapping_error(&dd->pcidev->dev, dma_addr)) {
ret = -ENOMEM;
--
2.5.0
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