提交 71504062 编写于 作者: L Lu Baolu 提交者: Greg Kroah-Hartman

usb: xhci: fix wild pointers in xhci_mem_cleanup

This patch fixes some wild pointers produced by xhci_mem_cleanup.
These wild pointers will cause system crash if xhci_mem_cleanup()
is called twice.
Reported-and-tested-by: NPengcheng Li <lpc.li@hisilicon.com>
Signed-off-by: NLu Baolu <baolu.lu@linux.intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: NMathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
上级 5ad3b03e
......@@ -1861,6 +1861,12 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci)
kfree(xhci->rh_bw);
kfree(xhci->ext_caps);
xhci->usb2_ports = NULL;
xhci->usb3_ports = NULL;
xhci->port_array = NULL;
xhci->rh_bw = NULL;
xhci->ext_caps = NULL;
xhci->page_size = 0;
xhci->page_shift = 0;
xhci->bus_state[0].bus_suspended = 0;
......
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