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Commit 630aa3cf authored by Alan Stern's avatar Alan Stern Committed by Greg Kroah-Hartman
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[PATCH] USB: UHCI: No FSBR until device is configured 



Some USB devices don't enumerate well with FSBR turned on.  This patch
keeps devices on the low-speed part of the schedule (which doesn't use
FSBR) until they have been fully configured.

Signed-off-by: default avatarAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 0c734622

drivers/usb/host/uhci-q.c

+2 −2
Original line number Diff line number Diff line
@@ -672,9 +672,9 @@ static int uhci_submit_control(struct uhci_hcd *uhci, struct urb *urb, struct ur 
	/* Low-speed transfers get a different queue, and won't hog the bus.

	 * Also, some devices enumerate better without FSBR; the easiest way

	 * to do that is to put URBs on the low-speed queue while the device

	 * is in the DEFAULT state. */

	 * isn't in the CONFIGURED state. */

	if (urb->dev->speed == USB_SPEED_LOW ||

			urb->dev->state == USB_STATE_DEFAULT)

			urb->dev->state != USB_STATE_CONFIGURED)

		skelqh = uhci->skel_ls_control_qh;

	else {

		skelqh = uhci->skel_fs_control_qh;