IB/qib: Remove ib_sg_dma_address() and ib_sg_dma_len() overloads

Remove the overload for .dma_len and .dma_address

The removal of these methods is compensated for by code changes to
.map_sg to insure that the vanilla sg_dma_address() and sg_dma_len()
will do the same thing as the equivalent former ib_sg_dma_address()
and ib_sg_dma_len() calls into the drivers.

Suggested-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Tested-by: Vinod Kumar <vinod.kumar@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

1 files changed, 4 insertions, 17 deletions

diff --git a/drivers/infiniband/hw/qib/qib_dma.c b/drivers/infiniband/hw/qib/qib_dma.c
index 2920bb39a65b..59fe092b4b0f 100644
--- a/drivers/infiniband/hw/qib/qib_dma.c
+++ b/drivers/infiniband/hw/qib/qib_dma.c
@@ -108,6 +108,10 @@ static int qib_map_sg(struct ib_device *dev, struct scatterlist *sgl,
                         ret = 0;
                         break;
                 }
+                sg->dma_address = addr + sg->offset;
+#ifdef CONFIG_NEED_SG_DMA_LENGTH
+                sg->dma_length = sg->length;
+#endif
         }
         return ret;
 }
@@ -119,21 +123,6 @@ static void qib_unmap_sg(struct ib_device *dev,
         BUG_ON(!valid_dma_direction(direction));
 }
 
-static u64 qib_sg_dma_address(struct ib_device *dev, struct scatterlist *sg)
-{
-        u64 addr = (u64) page_address(sg_page(sg));
-
-        if (addr)
-                addr += sg->offset;
-        return addr;
-}
-
-static unsigned int qib_sg_dma_len(struct ib_device *dev,
-                                   struct scatterlist *sg)
-{
-        return sg->length;
-}
-
 static void qib_sync_single_for_cpu(struct ib_device *dev, u64 addr,
                                     size_t size, enum dma_data_direction dir)
 {
@@ -173,8 +162,6 @@ struct ib_dma_mapping_ops qib_dma_mapping_ops = {
         .unmap_page = qib_dma_unmap_page,
         .map_sg = qib_map_sg,
         .unmap_sg = qib_unmap_sg,
-        .dma_address = qib_sg_dma_address,
-        .dma_len = qib_sg_dma_len,
         .sync_single_for_cpu = qib_sync_single_for_cpu,
         .sync_single_for_device = qib_sync_single_for_device,
         .alloc_coherent = qib_dma_alloc_coherent,