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| author | David Brownell <david-b@pacbell.net> | 2007-07-01 12:21:00 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-07-12 16:34:42 -0700 |
| commit | c67ab134ba9f83f9de86e58adfeaa14a9efa6e00 (patch) | |
| tree | df9022b4a38e955abbf254d71e00ac1fecce6420 /drivers/usb/gadget/at91_udc.c | |
| parent | 9d8bab58b758cd5a96d368a8cc64111c9ab50407 (diff) | |
| download | blackbird-op-linux-c67ab134ba9f83f9de86e58adfeaa14a9efa6e00.tar.gz blackbird-op-linux-c67ab134ba9f83f9de86e58adfeaa14a9efa6e00.zip | |
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.c | 21 |
1 files changed, 0 insertions, 21 deletions
diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c index ba163f35bf21..63d7d6568699 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, |
