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/gspca/benq.c b/drivers/media/video/gspca/benq.c
index 43ac4af8d3ed..fce8d9492641 100644
--- a/drivers/media/video/gspca/benq.c
+++ b/drivers/media/video/gspca/benq.c
@@ -117,13 +117,13 @@ static int sd_start(struct gspca_dev *gspca_dev)
                         return -ENOMEM;
                 }
                 gspca_dev->urb[n] = urb;
-                urb->transfer_buffer = usb_buffer_alloc(gspca_dev->dev,
+                urb->transfer_buffer = usb_alloc_coherent(gspca_dev->dev,
                                                 SD_PKT_SZ * SD_NPKT,
                                                 GFP_KERNEL,
                                                 &urb->transfer_dma);
 
                 if (urb->transfer_buffer == NULL) {
-                        err("usb_buffer_alloc failed");
+                        err("usb_alloc_coherent failed");
                         return -ENOMEM;
                 }
                 urb->dev = gspca_dev->dev;