diff options
| author | Mathias Nyman <mathias.nyman@linux.intel.com> | 2014-09-11 13:55:48 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-10-05 14:54:09 -0700 |
| commit | 7aeede98bdbcbca2956822ce7a871e875663c6b6 (patch) | |
| tree | 4955336f7d57a20ef9d335a5c71daca005cc3e77 /drivers | |
| parent | 84ef02bb771786142db40e12239cd9fa90d3888c (diff) | |
xhci: Fix null pointer dereference if xhci initialization fails
commit c207e7c50f31113c24a9f536fcab1e8a256985d7 upstream.
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: Manuel Reimer <manuel.reimer@gmx.de>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/host/xhci-mem.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index d007f0920126..677f032482f7 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -1795,7 +1795,7 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci) } 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; for (j = 0; j < XHCI_MAX_INTERVAL; j++) { struct list_head *ep = &bwt->interval_bw[j].endpoints; |