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>

1 files changed, 19 insertions, 19 deletions

diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
index 189141ca4e05..094c76b5de17 100644
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -276,14 +276,14 @@ static void free_urbs(struct wdm_device *desc)
 
 static void cleanup(struct wdm_device *desc)
 {
-        usb_buffer_free(interface_to_usbdev(desc->intf),
-                        desc->wMaxPacketSize,
-                        desc->sbuf,
-                        desc->validity->transfer_dma);
-        usb_buffer_free(interface_to_usbdev(desc->intf),
-                        desc->wMaxCommand,
-                        desc->inbuf,
-                        desc->response->transfer_dma);
+        usb_free_coherent(interface_to_usbdev(desc->intf),
+                          desc->wMaxPacketSize,
+                          desc->sbuf,
+                          desc->validity->transfer_dma);
+        usb_free_coherent(interface_to_usbdev(desc->intf),
+                          desc->wMaxCommand,
+                          desc->inbuf,
+                          desc->response->transfer_dma);
         kfree(desc->orq);
         kfree(desc->irq);
         kfree(desc->ubuf);
@@ -705,17 +705,17 @@ next_desc:
         if (!desc->ubuf)
                 goto err;
 
-        desc->sbuf = usb_buffer_alloc(interface_to_usbdev(intf),
+        desc->sbuf = usb_alloc_coherent(interface_to_usbdev(intf),
                                         desc->wMaxPacketSize,
                                         GFP_KERNEL,
                                         &desc->validity->transfer_dma);
         if (!desc->sbuf)
                 goto err;
 
-        desc->inbuf = usb_buffer_alloc(interface_to_usbdev(intf),
-                                        desc->bMaxPacketSize0,
-                                        GFP_KERNEL,
-                                        &desc->response->transfer_dma);
+        desc->inbuf = usb_alloc_coherent(interface_to_usbdev(intf),
+                                         desc->bMaxPacketSize0,
+                                         GFP_KERNEL,
+                                         &desc->response->transfer_dma);
         if (!desc->inbuf)
                 goto err2;
 
@@ -742,15 +742,15 @@ out:
         return rv;
 err3:
         usb_set_intfdata(intf, NULL);
-        usb_buffer_free(interface_to_usbdev(desc->intf),
-                        desc->bMaxPacketSize0,
+        usb_free_coherent(interface_to_usbdev(desc->intf),
+                          desc->bMaxPacketSize0,
                         desc->inbuf,
                         desc->response->transfer_dma);
 err2:
-        usb_buffer_free(interface_to_usbdev(desc->intf),
-                        desc->wMaxPacketSize,
-                        desc->sbuf,
-                        desc->validity->transfer_dma);
+        usb_free_coherent(interface_to_usbdev(desc->intf),
+                          desc->wMaxPacketSize,
+                          desc->sbuf,
+                          desc->validity->transfer_dma);
 err:
         free_urbs(desc);
         kfree(desc->ubuf);