USB: rename usb_buffer_alloc() and usb_buffer_free() users

For more clearance what the functions actually do,

  usb_buffer_alloc() is renamed to usb_alloc_coherent()
  usb_buffer_free()  is renamed to usb_free_coherent()

They should only be used in code which really needs DMA coherency.

All call sites have been changed accordingly, except for staging
drivers.

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Pedro Ribeiro <pedrib@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2 files changed, 9 insertions, 9 deletions

diff --git a/drivers/net/wireless/ath/ar9170/usb.c b/drivers/net/wireless/ath/ar9170/usb.c
index e1c2fcaa8bed..a1f5444f7ccd 100644
--- a/drivers/net/wireless/ath/ar9170/usb.c
+++ b/drivers/net/wireless/ath/ar9170/usb.c
@@ -202,7 +202,7 @@ resubmit:
         return;
 
 free:
-        usb_buffer_free(aru->udev, 64, urb->transfer_buffer, urb->transfer_dma);
+        usb_free_coherent(aru->udev, 64, urb->transfer_buffer, urb->transfer_dma);
 }
 
 static void ar9170_usb_rx_completed(struct urb *urb)
@@ -283,7 +283,7 @@ static int ar9170_usb_alloc_rx_irq_urb(struct ar9170_usb *aru)
         if (!urb)
                 goto out;
 
-        ibuf = usb_buffer_alloc(aru->udev, 64, GFP_KERNEL, &urb->transfer_dma);
+        ibuf = usb_alloc_coherent(aru->udev, 64, GFP_KERNEL, &urb->transfer_dma);
         if (!ibuf)
                 goto out;
 
@@ -296,8 +296,8 @@ static int ar9170_usb_alloc_rx_irq_urb(struct ar9170_usb *aru)
         err = usb_submit_urb(urb, GFP_KERNEL);
         if (err) {
                 usb_unanchor_urb(urb);
-                usb_buffer_free(aru->udev, 64, urb->transfer_buffer,
-                                urb->transfer_dma);
+                usb_free_coherent(aru->udev, 64, urb->transfer_buffer,
+                                  urb->transfer_dma);
         }
 
 out:
diff --git a/drivers/net/wireless/zd1211rw/zd_usb.c b/drivers/net/wireless/zd1211rw/zd_usb.c
index d91ad1a612af..c257940b71b6 100644
--- a/drivers/net/wireless/zd1211rw/zd_usb.c
+++ b/drivers/net/wireless/zd1211rw/zd_usb.c
@@ -664,15 +664,15 @@ static struct urb *alloc_rx_urb(struct zd_usb *usb)
         urb = usb_alloc_urb(0, GFP_KERNEL);
         if (!urb)
                 return NULL;
-        buffer = usb_buffer_alloc(udev, USB_MAX_RX_SIZE, GFP_KERNEL,
-                                  &urb->transfer_dma);
+        buffer = usb_alloc_coherent(udev, USB_MAX_RX_SIZE, GFP_KERNEL,
+                                    &urb->transfer_dma);
         if (!buffer) {
                 usb_free_urb(urb);
                 return NULL;
         }
 
         usb_fill_bulk_urb(urb, udev, usb_rcvbulkpipe(udev, EP_DATA_IN),
-                          buffer, USB_MAX_RX_SIZE,
+                          buffer, USB_MAX_RX_SIZE,
                           rx_urb_complete, usb);
         urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 
@@ -683,8 +683,8 @@ static void free_rx_urb(struct urb *urb)
 {
         if (!urb)
                 return;
-        usb_buffer_free(urb->dev, urb->transfer_buffer_length,
-                        urb->transfer_buffer, urb->transfer_dma);
+        usb_free_coherent(urb->dev, urb->transfer_buffer_length,
+                          urb->transfer_buffer, urb->transfer_dma);
         usb_free_urb(urb);
 }