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authorDavid Brownell <david-b@pacbell.net>2007-07-01 11:04:54 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2007-07-12 16:34:42 -0700
commit9d8bab58b758cd5a96d368a8cc64111c9ab50407 (patch)
tree710695adf1e50f2e4680c130d548ccd3e6251630 /drivers/usb/gadget/zero.c
parentad8c623f4f48085edd51c7f4cdfd10295547bf45 (diff)
usb gadget stack: remove usb_ep_*_buffer(), part 1
Remove usb_ep_{alloc,free}_buffer() calls, for small dma-coherent buffers. This patch just removes the interface and its users; later patches will remove controller driver support. - This interface is invariably not implemented correctly in the controller drivers (e.g. using dma pools, a mechanism which post-dates the interface by several years). - At this point no gadget driver really *needs* to use it. In current kernels, any driver that needs such a mechanism could allocate a dma pool themselves. Removing this interface is thus a simplification and improvement. Note that the gmidi.c driver had a bug in this area; fixed. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/gadget/zero.c')
-rw-r--r--drivers/usb/gadget/zero.c9
1 files changed, 3 insertions, 6 deletions
diff --git a/drivers/usb/gadget/zero.c b/drivers/usb/gadget/zero.c
index 7078374d0b79..a2e6e3fc8c8d 100644
--- a/drivers/usb/gadget/zero.c
+++ b/drivers/usb/gadget/zero.c
@@ -481,8 +481,7 @@ alloc_ep_req (struct usb_ep *ep, unsigned length)
req = usb_ep_alloc_request (ep, GFP_ATOMIC);
if (req) {
req->length = length;
- req->buf = usb_ep_alloc_buffer (ep, length,
- &req->dma, GFP_ATOMIC);
+ req->buf = kmalloc(length, GFP_ATOMIC);
if (!req->buf) {
usb_ep_free_request (ep, req);
req = NULL;
@@ -493,8 +492,7 @@ alloc_ep_req (struct usb_ep *ep, unsigned length)
static void free_ep_req (struct usb_ep *ep, struct usb_request *req)
{
- if (req->buf)
- usb_ep_free_buffer (ep, req->buf, req->dma, req->length);
+ kfree(req->buf);
usb_ep_free_request (ep, req);
}
@@ -1199,8 +1197,7 @@ autoconf_fail:
dev->req = usb_ep_alloc_request (gadget->ep0, GFP_KERNEL);
if (!dev->req)
goto enomem;
- dev->req->buf = usb_ep_alloc_buffer (gadget->ep0, USB_BUFSIZ,
- &dev->req->dma, GFP_KERNEL);
+ dev->req->buf = kmalloc(USB_BUFSIZ, GFP_KERNEL);
if (!dev->req->buf)
goto enomem;