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/sound/usb/ua101.c b/sound/usb/ua101.c
index 3d458d3..d700e32 100644
--- a/sound/usb/ua101.c
+++ b/sound/usb/ua101.c
@@ -41,7 +41,7 @@
/*
* This magic value optimizes memory usage efficiency for the UA-101's packet
* sizes at all sample rates, taking into account the stupid cache pool sizes
- * that usb_buffer_alloc() uses.
+ * that usb_alloc_coherent() uses.
*/
#define DEFAULT_QUEUE_LENGTH 21
@@ -1056,7 +1056,7 @@
(unsigned int)MAX_QUEUE_LENGTH);
/*
- * The cache pool sizes used by usb_buffer_alloc() (128, 512, 2048) are
+ * The cache pool sizes used by usb_alloc_coherent() (128, 512, 2048) are
* quite bad when used with the packet sizes of this device (e.g. 280,
* 520, 624). Therefore, we allocate and subdivide entire pages, using
* a smaller buffer only for the last chunk.
@@ -1067,8 +1067,8 @@
packets = min(remaining_packets, packets_per_page);
size = packets * stream->max_packet_bytes;
stream->buffers[i].addr =
- usb_buffer_alloc(ua->dev, size, GFP_KERNEL,
- &stream->buffers[i].dma);
+ usb_alloc_coherent(ua->dev, size, GFP_KERNEL,
+ &stream->buffers[i].dma);
if (!stream->buffers[i].addr)
return -ENOMEM;
stream->buffers[i].size = size;
@@ -1088,10 +1088,10 @@
unsigned int i;
for (i = 0; i < ARRAY_SIZE(stream->buffers); ++i)
- usb_buffer_free(ua->dev,
- stream->buffers[i].size,
- stream->buffers[i].addr,
- stream->buffers[i].dma);
+ usb_free_coherent(ua->dev,
+ stream->buffers[i].size,
+ stream->buffers[i].addr,
+ stream->buffers[i].dma);
}
static int alloc_stream_urbs(struct ua101 *ua, struct ua101_stream *stream,