rt2x00: fix clk_get call

clk_get() takes two arguments and might return ERR_PTR(), so we
have to nullify pointer on that case, to do not break further call
to clk_get_rate().

Reported-by: Felix Fietkau <nbd@nbd.name>
Fixes: 34db70b92fae ("rt2x00: add copy of clk for soc devices")
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

path: root/drivers/usb/host/xhci-trace.c

/*
 * xHCI host controller driver
 *
 * Copyright (C) 2013 Xenia Ragiadakou
 *
 * Author: Xenia Ragiadakou
 * Email : burzalodowa@gmail.com
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#define CREATE_TRACE_POINTS
#include "xhci-trace.h"

EXPORT_TRACEPOINT_SYMBOL_GPL(xhci_dbg_quirks);