sfc: Merged efx_page_offset() into efx_rx_buf_offset()

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

drivers/net/sfc/rx.c

@@ -86,16 +86,12 @@ static unsigned int rx_refill_limit = 95;
  */
 #define EFX_RXD_HEAD_ROOM 2
 
-static inline unsigned int efx_page_offset(void *p)
-{
-	return (__force unsigned int)p & (PAGE_SIZE - 1);
-}
 static inline unsigned int efx_rx_buf_offset(struct efx_rx_buffer *buf)
 {
 	/* Offset is always within one page, so we don't need to consider
 	 * the page order.
 	 */
-	return efx_page_offset(buf->data);
+	return (__force unsigned long) buf->data & (PAGE_SIZE - 1);
 }
 static inline unsigned int efx_rx_buf_size(struct efx_nic *efx)
 {
@@ -291,10 +287,10 @@ static inline int efx_init_rx_buffer_page(struct efx_rx_queue *rx_queue,
 				      EFX_PAGE_IP_ALIGN);
 	}
 
-	offset = efx_page_offset(rx_queue->buf_data);
 	rx_buf->len = bytes;
-	rx_buf->dma_addr = rx_queue->buf_dma_addr + offset;
 	rx_buf->data = rx_queue->buf_data;
+	offset = efx_rx_buf_offset(rx_buf);
+	rx_buf->dma_addr = rx_queue->buf_dma_addr + offset;
 
 	/* Try to pack multiple buffers per page */
 	if (efx->rx_buffer_order == 0) {