diff options
| author | David Brownell | 2007-07-01 12:21:00 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2007-07-12 16:34:42 -0700 |
| commit | c67ab134ba9f83f9de86e58adfeaa14a9efa6e00 (patch) | |
| tree | df9022b4a38e955abbf254d71e00ac1fecce6420 /include | |
| parent | 9d8bab58b758cd5a96d368a8cc64111c9ab50407 (diff) | |
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 'include')
| -rw-r--r-- | include/linux/usb_gadget.h | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/include/linux/usb_gadget.h b/include/linux/usb_gadget.h index 703fd84c46fc..4f59b2aa8a9e 100644 --- a/include/linux/usb_gadget.h +++ b/include/linux/usb_gadget.h @@ -110,13 +110,6 @@ struct usb_ep_ops { gfp_t gfp_flags); void (*free_request) (struct usb_ep *ep, struct usb_request *req); - void *(*alloc_buffer) (struct usb_ep *ep, unsigned bytes, - dma_addr_t *dma, gfp_t gfp_flags); - void (*free_buffer) (struct usb_ep *ep, void *buf, dma_addr_t dma, - unsigned bytes); - // NOTE: on 2.6, drivers may also use dma_map() and - // dma_sync_single_*() to directly manage dma overhead. - int (*queue) (struct usb_ep *ep, struct usb_request *req, gfp_t gfp_flags); int (*dequeue) (struct usb_ep *ep, struct usb_request *req); |