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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 <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
David Vrabel 2009-04-08 17:36:28 +00:00 • committed by Greg Kroah-Hartman
commit 3444b26afa
10 changed files with 91 additions and 54 deletions
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1
drivers/media/video/pvrusb2/pvrusb2-hdw.c
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@ -1461,7 +1461,6 @@ static int pvr2_upload_firmware1(struct pvr2_hdw *hdw)
return ret;
}
usb_settoggle(hdw->usb_dev, 0 & 0xf, !(0 & USB_DIR_IN), 0);
usb_clear_halt(hdw->usb_dev, usb_sndbulkpipe(hdw->usb_dev, 0 & 0x7f));
pipe = usb_sndctrlpipe(hdw->usb_dev, 0);