Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757422Ab3IYAm4 (ORCPT ); Tue, 24 Sep 2013 20:42:56 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:39525 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756557Ab3IYAUN (ORCPT ); Tue, 24 Sep 2013 20:20:13 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Daniel Mack , Dan Carpenter Subject: [ 040/117] usb: ehci-mxc: check for pdata before dereferencing Date: Tue, 24 Sep 2013 17:18:26 -0700 Message-Id: <20130925001745.203913181@linuxfoundation.org> X-Mailer: git-send-email 1.8.4.3.gca3854a In-Reply-To: <20130925001740.833541979@linuxfoundation.org> References: <20130925001740.833541979@linuxfoundation.org> User-Agent: quilt/0.60-5.1.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1238 Lines: 40 3.11-stable review patch. If anyone has any objections, please let me know. ------------------ From: Daniel Mack commit f375fc520d4df0cd9fcb570f33c103c6c0311f9e upstream. 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 Reported-by: Dan Carpenter Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-mxc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- 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 pl if (pdata && pdata->exit) pdata->exit(pdev); - if (pdata->otg) + if (pdata && pdata->otg) usb_phy_shutdown(pdata->otg); clk_disable_unprepare(priv->usbclk); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/