diff options
| author |   Daniel Mack <zonque@gmail.com> | 2013-08-21 11:17:21 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-08-23 10:46:03 -0700 |
| commit | f375fc520d4df0cd9fcb570f33c103c6c0311f9e (patch) | |
| tree | 27979fd0b29a34f678a6743f033c3f7bb5fc3cb2 /drivers/usb/host/ehci-mxc.c | |
| parent | uwb: Staticize local symbols (diff) | |
| download | linux-dev-f375fc520d4df0cd9fcb570f33c103c6c0311f9e.tar.xz linux-dev-f375fc520d4df0cd9fcb570f33c103c6c0311f9e.zip | |
usb: ehci-mxc: check for pdata before dereferencing
Commit 7e8d5cd93fac ("USB: Add EHCI support for MX27 and MX31 based
boards") introduced code that could potentially lead to a NULL pointer
dereference on driver removal.
Fix this by checking for the value of pdata before dereferencing it.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: stable <stable@vger.kernel.org> # 2.6.33+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/ehci-mxc.c')
| -rw-r--r-- | drivers/usb/host/ehci-mxc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/host/ehci-mxc.c b/drivers/usb/host/ehci-mxc.c index 5899ad6626c7..0528dc4526c8 100644 --- a/drivers/usb/host/ehci-mxc.c +++ b/drivers/usb/host/ehci-mxc.c @@ -184,7 +184,7 @@ static int ehci_mxc_drv_remove(struct platform_device *pdev) if (pdata && pdata->exit) pdata->exit(pdev); - if (pdata->otg) + if (pdata && pdata->otg) usb_phy_shutdown(pdata->otg); clk_disable_unprepare(priv->usbclk); |