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usb: hub: Use correct reset for wedged USB3 devices that are NOTATTACHED

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commit 2d51f3cd11 upstream.

This patch adds a check for USB_STATE_NOTATTACHED to the
hub_port_warm_reset_required() workaround for ports that end up in
Compliance Mode in hub_events() when trying to decide which reset
function to use. Trying to call usb_reset_device() with a NOTATTACHED
device will just fail and leave the port broken.

Signed-off-by: Julius Werner <jwerner@chromium.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Julius Werner 2013-11-07 10:59:14 -08:00 committed by Greg Kroah-Hartman
parent fbaa929d86
commit 9126f1f5d3
1 changed files with 3 additions and 2 deletions
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5
drivers/usb/core/hub.c
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@ -4808,8 +4808,9 @@ static void hub_events(void)
hub->ports[i - 1]->child;
dev_dbg(hub_dev, "warm reset port %d\n", i);
if (!udev || !(portstatus &
USB_PORT_STAT_CONNECTION)) {
if (!udev ||
!(portstatus & USB_PORT_STAT_CONNECTION) ||
udev->state == USB_STATE_NOTATTACHED) {
status = hub_port_reset(hub, i,
NULL, HUB_BH_RESET_TIME,
true);