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>
diff --git a/Documentation/usb/dma.txt b/Documentation/usb/dma.txt
index cfdcd16..a37e59c 100644
--- a/Documentation/usb/dma.txt
+++ b/Documentation/usb/dma.txt
@@ -43,10 +43,10 @@
kind of addresses to store in urb->transfer_buffer and urb->transfer_dma.
You'd also set URB_NO_TRANSFER_DMA_MAP in urb->transfer_flags:
- void *usb_buffer_alloc (struct usb_device *dev, size_t size,
+ void *usb_alloc_coherent (struct usb_device *dev, size_t size,
int mem_flags, dma_addr_t *dma);
- void usb_buffer_free (struct usb_device *dev, size_t size,
+ void usb_free_coherent (struct usb_device *dev, size_t size,
void *addr, dma_addr_t dma);
Most drivers should *NOT* be using these primitives; they don't need