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, 2 insertions, 2 deletions

diff --git a/drivers/media/video/uvc/uvc_video.c b/drivers/media/video/uvc/uvc_video.c
index 821a9969b7bf..53f3ef4635eb 100644
--- a/drivers/media/video/uvc/uvc_video.c
+++ b/drivers/media/video/uvc/uvc_video.c
@@ -739,7 +739,7 @@ static void uvc_free_urb_buffers(struct uvc_streaming *stream)
 
         for (i = 0; i < UVC_URBS; ++i) {
                 if (stream->urb_buffer[i]) {
-                        usb_buffer_free(stream->dev->udev, stream->urb_size,
+                        usb_free_coherent(stream->dev->udev, stream->urb_size,
                                 stream->urb_buffer[i], stream->urb_dma[i]);
                         stream->urb_buffer[i] = NULL;
                 }
@@ -780,7 +780,7 @@ static int uvc_alloc_urb_buffers(struct uvc_streaming *stream,
         for (; npackets > 1; npackets /= 2) {
                 for (i = 0; i < UVC_URBS; ++i) {
                         stream->urb_size = psize * npackets;
-                        stream->urb_buffer[i] = usb_buffer_alloc(
+                        stream->urb_buffer[i] = usb_alloc_coherent(
                                 stream->dev->udev, stream->urb_size,
                                 gfp_flags | __GFP_NOWARN, &stream->urb_dma[i]);
                         if (!stream->urb_buffer[i]) {