From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751540Ab3FXT55 (ORCPT ); Mon, 24 Jun 2013 15:57:57 -0400 Received: from mail.ispras.ru ([83.149.199.45]:43165 "EHLO mail.ispras.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750775Ab3FXT5z (ORCPT ); Mon, 24 Jun 2013 15:57:55 -0400 From: Alexey Khoroshilov To: Huang Shijie , Hans Verkuil Cc: Alexey Khoroshilov , Mauro Carvalho Chehab , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, ldv-project@linuxtesting.org Subject: [PATCH 1/2] [media] tlg2300: implement error handling in poseidon_probe() Date: Mon, 24 Jun 2013 23:57:36 +0400 Message-Id: <1372103857-29451-1-git-send-email-khoroshilov@ispras.ru> X-Mailer: git-send-email 1.8.1.2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org All poseidon init functions properly return error codes, but they are ignored by poseidon_probe(). The patch implements handling of error cases. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov --- drivers/media/usb/tlg2300/pd-main.c | 27 ++++++++++++++++++++++++--- 1 file changed, 24 insertions(+), 3 deletions(-) diff --git a/drivers/media/usb/tlg2300/pd-main.c b/drivers/media/usb/tlg2300/pd-main.c index e07e4c6..ca5e1bc 100644 --- a/drivers/media/usb/tlg2300/pd-main.c +++ b/drivers/media/usb/tlg2300/pd-main.c @@ -436,12 +436,22 @@ static int poseidon_probe(struct usb_interface *interface, /* register v4l2 device */ ret = v4l2_device_register(&interface->dev, &pd->v4l2_dev); + if (ret) + goto err_v4l2; /* register devices in directory /dev */ ret = pd_video_init(pd); - poseidon_audio_init(pd); - poseidon_fm_init(pd); - pd_dvb_usb_device_init(pd); + if (ret) + goto err_video; + ret = poseidon_audio_init(pd); + if (ret) + goto err_audio; + ret = poseidon_fm_init(pd); + if (ret) + goto err_fm; + ret = pd_dvb_usb_device_init(pd); + if (ret) + goto err_dvb; INIT_LIST_HEAD(&pd->device_list); list_add_tail(&pd->device_list, &pd_device_list); @@ -459,6 +469,17 @@ static int poseidon_probe(struct usb_interface *interface, } #endif return 0; +err_dvb: + poseidon_fm_exit(pd); +err_fm: + poseidon_audio_free(pd); +err_audio: + pd_video_exit(pd); +err_video: + v4l2_device_unregister(&pd->v4l2_dev); +err_v4l2: + kfree(pd); + return ret; } static void poseidon_disconnect(struct usb_interface *interface) -- 1.8.1.2