forked from Minki/linux
usb: xhci: lock mutex on xhci_stop
Else it races with xhci_setup_device Cc: <stable@vger.kernel.org> Signed-off-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -677,8 +677,11 @@ void xhci_stop(struct usb_hcd *hcd)
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u32 temp;
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struct xhci_hcd *xhci = hcd_to_xhci(hcd);
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mutex_lock(&xhci->mutex);
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if (!usb_hcd_is_primary_hcd(hcd)) {
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xhci_only_stop_hcd(xhci->shared_hcd);
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mutex_unlock(&xhci->mutex);
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return;
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}
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@ -717,6 +720,7 @@ void xhci_stop(struct usb_hcd *hcd)
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xhci_dbg_trace(xhci, trace_xhci_dbg_init,
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"xhci_stop completed - status = %x",
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readl(&xhci->op_regs->status));
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mutex_unlock(&xhci->mutex);
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}
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/*
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