Commit c207e7c5 authored by Mathias Nyman's avatar Mathias Nyman Committed by Greg Kroah-Hartman

xhci: Fix null pointer dereference if xhci initialization fails

If xhci initialization fails before the roothub bandwidth
domains (xhci->rh_bw[i]) are allocated it will oops when
trying to access rh_bw members in xhci_mem_cleanup().
Reported-by: default avatarManuel Reimer <manuel.reimer@gmx.de>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: default avatarMathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent c66f1c62
...@@ -1819,7 +1819,7 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci) ...@@ -1819,7 +1819,7 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci)
xhci_cleanup_command_queue(xhci); xhci_cleanup_command_queue(xhci);
num_ports = HCS_MAX_PORTS(xhci->hcs_params1); num_ports = HCS_MAX_PORTS(xhci->hcs_params1);
for (i = 0; i < num_ports; i++) { for (i = 0; i < num_ports && xhci->rh_bw; i++) {
struct xhci_interval_bw_table *bwt = &xhci->rh_bw[i].bw_table; struct xhci_interval_bw_table *bwt = &xhci->rh_bw[i].bw_table;
for (j = 0; j < XHCI_MAX_INTERVAL; j++) { for (j = 0; j < XHCI_MAX_INTERVAL; j++) {
struct list_head *ep = &bwt->interval_bw[j].endpoints; struct list_head *ep = &bwt->interval_bw[j].endpoints;
......
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