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USB: add reset endpoint operations

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Wireless USB endpoint state has a sequence number and a current
window and not just a single toggle bit.  So allow HCDs to provide a
endpoint_reset method and call this or clear the software toggles as
required (after a clear halt, set configuration etc.).

usb_settoggle() and friends are then HCD internal and are moved into
core/hcd.h and all device drivers call usb_reset_endpoint() instead.

If the device endpoint state has been reset (with a clear halt) but
the host endpoint state has not then subsequent data transfers will
not complete. The device will only work again after it is reset or
disconnected.

Signed-off-by: David Vrabel <david.vrabel@csr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
David Vrabel
2009-04-08 17:36:28 +00:00
committed by Greg Kroah-Hartman
parent d45e230bf0
commit 3444b26afa
10 changed files with 91 additions and 54 deletions
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2
drivers/usb/core/devio.c
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@ -841,7 +841,7 @@ static int proc_resetep(struct dev_state *ps, void __user *arg)
ret = checkintf(ps, ret);
if (ret)
return ret;
usb_settoggle(ps->dev, ep & 0xf, !(ep & USB_DIR_IN), 0);
usb_reset_endpoint(ps->dev, ep);
return 0;
}