Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754266AbdFNGDB (ORCPT ); Wed, 14 Jun 2017 02:03:01 -0400 Received: from mail-pf0-f196.google.com ([209.85.192.196]:36475 "EHLO mail-pf0-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754018AbdFNGDA (ORCPT ); Wed, 14 Jun 2017 02:03:00 -0400 From: Arvind Yadav To: stern@rowland.harvard.edu, gregkh@linuxfoundation.org Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] usb: host: ohci-pxa27x: Handle return value of clk_prepare_enable Date: Wed, 14 Jun 2017 11:32:22 +0530 Message-Id: <9adc506aa3b14033472a7a473d842962d155e005.1497419972.git.arvind.yadav.cs@gmail.com> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1006 Lines: 36 clk_prepare_enable() can fail here and we must check its return value. Signed-off-by: Arvind Yadav --- drivers/usb/host/ohci-pxa27x.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/usb/host/ohci-pxa27x.c b/drivers/usb/host/ohci-pxa27x.c index 79efde8f..c5afdb2 100644 --- a/drivers/usb/host/ohci-pxa27x.c +++ b/drivers/usb/host/ohci-pxa27x.c @@ -281,7 +281,9 @@ static int pxa27x_start_hc(struct pxa27x_ohci *pxa_ohci, struct device *dev) inf = dev_get_platdata(dev); - clk_prepare_enable(pxa_ohci->clk); + retval = clk_prepare_enable(pxa_ohci->clk); + if (retval) + return retval; pxa27x_reset_hc(pxa_ohci); @@ -296,8 +298,10 @@ static int pxa27x_start_hc(struct pxa27x_ohci *pxa_ohci, struct device *dev) if (inf->init) retval = inf->init(dev); - if (retval < 0) + if (retval < 0) { + clk_disable_unprepare(pxa_ohci->clk); return retval; + } if (cpu_is_pxa3xx()) pxa3xx_u2d_start_hc(&hcd->self); -- 1.9.1