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authorDavid Brownell <david-b@pacbell.net>2007-07-01 12:21:00 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2007-07-12 16:34:42 -0700
commitc67ab134ba9f83f9de86e58adfeaa14a9efa6e00 (patch)
treedf9022b4a38e955abbf254d71e00ac1fecce6420 /drivers/usb/gadget/at91_udc.c
parent9d8bab58b758cd5a96d368a8cc64111c9ab50407 (diff)
downloadop-kernel-dev-c67ab134ba9f83f9de86e58adfeaa14a9efa6e00.zip
op-kernel-dev-c67ab134ba9f83f9de86e58adfeaa14a9efa6e00.tar.gz
usb gadget stack: remove usb_ep_*_buffer(), part 2
This patch removes controller driver infrastructure which supported the now-removed usb_ep_{alloc,free}_buffer() calls. As can be seen, many of the implementations of this were broken to various degrees. Many didn't properly return dma-coherent mappings; those which did so were necessarily ugly because of bogosity in the underlying dma_free_coherent() calls ... which on many platforms can't be called from the same contexts (notably in_irq) from which their dma_alloc_coherent() sibling can be called. The main potential downside of removing this is that gadget drivers wouldn't have specific knowledge that the controller drivers have: endpoints that aren't dma-capable don't need any dma mappings at all. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/gadget/at91_udc.c')
-rw-r--r--drivers/usb/gadget/at91_udc.c21
1 files changed, 0 insertions, 21 deletions
diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c
index ba163f3..63d7d65 100644
--- a/drivers/usb/gadget/at91_udc.c
+++ b/drivers/usb/gadget/at91_udc.c
@@ -601,25 +601,6 @@ static void at91_ep_free_request(struct usb_ep *_ep, struct usb_request *_req)
kfree(req);
}
-static void *at91_ep_alloc_buffer(
- struct usb_ep *_ep,
- unsigned bytes,
- dma_addr_t *dma,
- gfp_t gfp_flags)
-{
- *dma = ~0;
- return kmalloc(bytes, gfp_flags);
-}
-
-static void at91_ep_free_buffer(
- struct usb_ep *ep,
- void *buf,
- dma_addr_t dma,
- unsigned bytes)
-{
- kfree(buf);
-}
-
static int at91_ep_queue(struct usb_ep *_ep,
struct usb_request *_req, gfp_t gfp_flags)
{
@@ -788,8 +769,6 @@ static const struct usb_ep_ops at91_ep_ops = {
.disable = at91_ep_disable,
.alloc_request = at91_ep_alloc_request,
.free_request = at91_ep_free_request,
- .alloc_buffer = at91_ep_alloc_buffer,
- .free_buffer = at91_ep_free_buffer,
.queue = at91_ep_queue,
.dequeue = at91_ep_dequeue,
.set_halt = at91_ep_set_halt,
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