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| author | Alan Stern <stern@rowland.harvard.edu> | 2007-09-10 11:33:05 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-10-12 14:55:26 -0700 |
| commit | 95cf82f99cfbd697c15572c444bd4f54f19745b0 (patch) | |
| tree | 87d0bd6c842922231f5177522b6635532416d206 /drivers/usb/core/hcd.h | |
| parent | 5ad4f71e2f19a06f738463da1f09ea7fda3a3db2 (diff) | |
| download | blackbird-op-linux-95cf82f99cfbd697c15572c444bd4f54f19745b0.tar.gz blackbird-op-linux-95cf82f99cfbd697c15572c444bd4f54f19745b0.zip | |
USB: break apart flush_endpoint and disable_endpoint
This patch (as988) breaks usb_hcd_endpoint_disable() apart into two
routines. The first, usb_hcd_flush_endpoint() does the -ESHUTDOWN
unlinking of all URBs in the endpoint's queue and waits for them to
complete. The second, usb_hcd_disable_endpoint() -- renamed for
better grammatical style -- merely calls the HCD's endpoint_disable
method. The changeover is easy because the routine currently has only
one caller.
This separation of function will be exploited in the following patch:
When a device is suspended, the core will be able to cancel all
outstanding URBs for that device while leaving the HCD's
endpoint-related data structures intact for later.
As an added benefit, HCDs no longer need to check for existing URBs in
their endpoint_disable methods. It is now guaranteed that there will
be none.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/core/hcd.h')
| -rw-r--r-- | drivers/usb/core/hcd.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/usb/core/hcd.h b/drivers/usb/core/hcd.h index 0fc7b95259f5..1396141274f1 100644 --- a/drivers/usb/core/hcd.h +++ b/drivers/usb/core/hcd.h @@ -219,7 +219,9 @@ extern int usb_hcd_submit_urb (struct urb *urb, gfp_t mem_flags); extern int usb_hcd_unlink_urb (struct urb *urb, int status); extern void usb_hcd_giveback_urb(struct usb_hcd *hcd, struct urb *urb, int status); -extern void usb_hcd_endpoint_disable (struct usb_device *udev, +extern void usb_hcd_flush_endpoint(struct usb_device *udev, + struct usb_host_endpoint *ep); +extern void usb_hcd_disable_endpoint(struct usb_device *udev, struct usb_host_endpoint *ep); extern int usb_hcd_get_frame_number (struct usb_device *udev); |
