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USB: OHCI: ohci_init_driver(): sanity check overrides

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Check for non-NULL overrides before dereferencing since platforms may
pass in NULL overrides.

Signed-off-by: Kevin Hilman <khilman@linaro.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Kevin Hilman 2013-09-27 08:10:32 -07:00 committed by Greg Kroah-Hartman
parent 14e1d2dfe7
commit c80ad6d1cd
1 changed files with 6 additions and 4 deletions
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10
drivers/usb/host/ohci-hcd.c
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@ -1161,10 +1161,12 @@ void ohci_init_driver(struct hc_driver *drv,
/* Copy the generic table to drv and then apply the overrides */
*drv = ohci_hc_driver;
drv->product_desc = over->product_desc;
drv->hcd_priv_size += over->extra_priv_size;
if (over->reset)
drv->reset = over->reset;
if (over) {
drv->product_desc = over->product_desc;
drv->hcd_priv_size += over->extra_priv_size;
if (over->reset)
drv->reset = over->reset;
}
}
EXPORT_SYMBOL_GPL(ohci_init_driver);