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platform_kernel-5.15
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usb: ehci-mxc: check for pdata before dereferencing 

Commit 7e8d5cd93f ("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>
This commit is contained in:
Daniel Mack 2013-08-21 11:17:21 +02:00 committed by Greg Kroah-Hartman
parent 67e51ec4ed
commit f375fc520d
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/host/ehci-mxc.c
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@ -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);