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USB: rename usb_buffer_alloc() and usb_buffer_free() users

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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>
This commit is contained in:
Daniel Mack
2010-04-12 13:17:25 +02:00
committed by Greg Kroah-Hartman
parent 48679c6d77
commit 997ea58eb9
51 changed files with 286 additions and 291 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/usb/misc/iowarrior.c
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@@ -239,8 +239,8 @@ static void iowarrior_write_callback(struct urb *urb)
__func__, status);
}
/* free up our allocated buffer */
usb_buffer_free(urb->dev, urb->transfer_buffer_length,
urb->transfer_buffer, urb->transfer_dma);
usb_free_coherent(urb->dev, urb->transfer_buffer_length,
urb->transfer_buffer, urb->transfer_dma);
/* tell a waiting writer the interrupt-out-pipe is available again */
atomic_dec(&dev->write_busy);
wake_up_interruptible(&dev->write_wait);
@@ -421,8 +421,8 @@ static ssize_t iowarrior_write(struct file *file,
dbg("%s Unable to allocate urb ", __func__);
goto error_no_urb;
}
buf = usb_buffer_alloc(dev->udev, dev->report_size,
GFP_KERNEL, &int_out_urb->transfer_dma);
buf = usb_alloc_coherent(dev->udev, dev->report_size,
GFP_KERNEL, &int_out_urb->transfer_dma);
if (!buf) {
retval = -ENOMEM;
dbg("%s Unable to allocate buffer ", __func__);
@@ -459,8 +459,8 @@ static ssize_t iowarrior_write(struct file *file,
break;
}
error:
usb_buffer_free(dev->udev, dev->report_size, buf,
int_out_urb->transfer_dma);
usb_free_coherent(dev->udev, dev->report_size, buf,
int_out_urb->transfer_dma);
error_no_buffer:
usb_free_urb(int_out_urb);
error_no_urb: