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, 7 insertions, 7 deletions

diff --git a/drivers/media/video/cx231xx/cx231xx-core.c b/drivers/media/video/cx231xx/cx231xx-core.c
index b24eee115e7e..6ccd87d5fb98 100644
--- a/drivers/media/video/cx231xx/cx231xx-core.c
+++ b/drivers/media/video/cx231xx/cx231xx-core.c
@@ -679,11 +679,11 @@ void cx231xx_uninit_isoc(struct cx231xx *dev)
                                 usb_unlink_urb(urb);
 
                         if (dev->video_mode.isoc_ctl.transfer_buffer[i]) {
-                                usb_buffer_free(dev->udev,
-                                                urb->transfer_buffer_length,
-                                                dev->video_mode.isoc_ctl.
-                                                transfer_buffer[i],
-                                                urb->transfer_dma);
+                                usb_free_coherent(dev->udev,
+                                                  urb->transfer_buffer_length,
+                                                  dev->video_mode.isoc_ctl.
+                                                  transfer_buffer[i],
+                                                  urb->transfer_dma);
                         }
                         usb_free_urb(urb);
                         dev->video_mode.isoc_ctl.urb[i] = NULL;
@@ -770,8 +770,8 @@ int cx231xx_init_isoc(struct cx231xx *dev, int max_packets,
                 dev->video_mode.isoc_ctl.urb[i] = urb;
 
                 dev->video_mode.isoc_ctl.transfer_buffer[i] =
-                    usb_buffer_alloc(dev->udev, sb_size, GFP_KERNEL,
-                                     &urb->transfer_dma);
+                    usb_alloc_coherent(dev->udev, sb_size, GFP_KERNEL,
+                                       &urb->transfer_dma);
                 if (!dev->video_mode.isoc_ctl.transfer_buffer[i]) {
                         cx231xx_err("unable to allocate %i bytes for transfer"
                                     " buffer %i%s\n",