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, 9 insertions, 9 deletions

diff --git a/drivers/usb/misc/ftdi-elan.c b/drivers/usb/misc/ftdi-elan.c
index 2300a51..82e1663 100644
--- a/drivers/usb/misc/ftdi-elan.c
+++ b/drivers/usb/misc/ftdi-elan.c
@@ -734,7 +734,7 @@ static void ftdi_elan_write_bulk_callback(struct urb *urb)
                 dev_err(&ftdi->udev->dev, "urb=%p write bulk status received: %"
                         "d\n", urb, status);
         }
-        usb_buffer_free(urb->dev, urb->transfer_buffer_length,
+        usb_free_coherent(urb->dev, urb->transfer_buffer_length,
                 urb->transfer_buffer, urb->transfer_dma);
 }
 
@@ -795,7 +795,7 @@ static int ftdi_elan_command_engine(struct usb_ftdi *ftdi)
                         total_size);
                 return -ENOMEM;
         }
-        buf = usb_buffer_alloc(ftdi->udev, total_size, GFP_KERNEL,
+        buf = usb_alloc_coherent(ftdi->udev, total_size, GFP_KERNEL,
                 &urb->transfer_dma);
         if (!buf) {
                 dev_err(&ftdi->udev->dev, "could not get a buffer to write %d c"
@@ -829,7 +829,7 @@ static int ftdi_elan_command_engine(struct usb_ftdi *ftdi)
                 dev_err(&ftdi->udev->dev, "failed %d to submit urb %p to write "
                         "%d commands totaling %d bytes to the Uxxx\n", retval,
                         urb, command_size, total_size);
-                usb_buffer_free(ftdi->udev, total_size, buf, urb->transfer_dma);
+                usb_free_coherent(ftdi->udev, total_size, buf, urb->transfer_dma);
                 usb_free_urb(urb);
                 return retval;
         }
@@ -1167,7 +1167,7 @@ static ssize_t ftdi_elan_write(struct file *file,
                 retval = -ENOMEM;
                 goto error_1;
         }
-        buf = usb_buffer_alloc(ftdi->udev, count, GFP_KERNEL,
+        buf = usb_alloc_coherent(ftdi->udev, count, GFP_KERNEL,
                 &urb->transfer_dma);
         if (!buf) {
                 retval = -ENOMEM;
@@ -1192,7 +1192,7 @@ static ssize_t ftdi_elan_write(struct file *file,
 exit:
         return count;
 error_3:
-	usb_buffer_free(ftdi->udev, count, buf, urb->transfer_dma);
+	usb_free_coherent(ftdi->udev, count, buf, urb->transfer_dma);
 error_2:
 	usb_free_urb(urb);
 error_1:
@@ -1968,7 +1968,7 @@ static int ftdi_elan_synchronize_flush(struct usb_ftdi *ftdi)
                         "ence\n");
                 return -ENOMEM;
         }
-        buf = usb_buffer_alloc(ftdi->udev, I, GFP_KERNEL, &urb->transfer_dma);
+        buf = usb_alloc_coherent(ftdi->udev, I, GFP_KERNEL, &urb->transfer_dma);
         if (!buf) {
                 dev_err(&ftdi->udev->dev, "could not get a buffer for flush seq"
                         "uence\n");
@@ -1985,7 +1985,7 @@ static int ftdi_elan_synchronize_flush(struct usb_ftdi *ftdi)
         if (retval) {
                 dev_err(&ftdi->udev->dev, "failed to submit urb containing the "
                         "flush sequence\n");
-                usb_buffer_free(ftdi->udev, i, buf, urb->transfer_dma);
+                usb_free_coherent(ftdi->udev, i, buf, urb->transfer_dma);
                 usb_free_urb(urb);
                 return -ENOMEM;
         }
@@ -2011,7 +2011,7 @@ static int ftdi_elan_synchronize_reset(struct usb_ftdi *ftdi)
                         "quence\n");
                 return -ENOMEM;
         }
-        buf = usb_buffer_alloc(ftdi->udev, I, GFP_KERNEL, &urb->transfer_dma);
+        buf = usb_alloc_coherent(ftdi->udev, I, GFP_KERNEL, &urb->transfer_dma);
         if (!buf) {
                 dev_err(&ftdi->udev->dev, "could not get a buffer for the reset"
                         " sequence\n");
@@ -2030,7 +2030,7 @@ static int ftdi_elan_synchronize_reset(struct usb_ftdi *ftdi)
         if (retval) {
                 dev_err(&ftdi->udev->dev, "failed to submit urb containing the "
                         "reset sequence\n");
-                usb_buffer_free(ftdi->udev, i, buf, urb->transfer_dma);
+                usb_free_coherent(ftdi->udev, i, buf, urb->transfer_dma);
                 usb_free_urb(urb);
                 return -ENOMEM;
         }