From patchwork Tue Mar 8 12:02:05 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laxman Dewangan X-Patchwork-Id: 594050 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 6A0F7140662 for ; Tue, 8 Mar 2016 23:15:31 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933011AbcCHMPT (ORCPT ); Tue, 8 Mar 2016 07:15:19 -0500 Received: from hqemgate16.nvidia.com ([216.228.121.65]:5585 "EHLO hqemgate16.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932926AbcCHMPO (ORCPT ); Tue, 8 Mar 2016 07:15:14 -0500 Received: from hqnvupgp08.nvidia.com (Not Verified[216.228.121.13]) by hqemgate16.nvidia.com id ; Tue, 08 Mar 2016 04:15:42 -0800 Received: from hqemhub02.nvidia.com ([172.20.150.31]) by hqnvupgp08.nvidia.com (PGP Universal service); Tue, 08 Mar 2016 04:14:40 -0800 X-PGP-Universal: processed; by hqnvupgp08.nvidia.com on Tue, 08 Mar 2016 04:14:40 -0800 Received: from ldewanganubuntu-System-Product-Name.nvidia.com (172.20.144.16) by hqemhub02.nvidia.com (172.20.150.31) with Microsoft SMTP Server (TLS) id 8.3.406.0; Tue, 8 Mar 2016 04:15:12 -0800 From: Laxman Dewangan To: , CC: , , , , , , , Laxman Dewangan Subject: [PATCH 2/5] gpio: gpiolib: Print error number if gpio hog failed Date: Tue, 8 Mar 2016 17:32:05 +0530 Message-ID: <1457438528-29054-3-git-send-email-ldewangan@nvidia.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1457438528-29054-1-git-send-email-ldewangan@nvidia.com> References: <1457438528-29054-1-git-send-email-ldewangan@nvidia.com> MIME-Version: 1.0 Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Print the error number of GPIO hog failed during its configurations. This helps in identifying the failure without instrumenting the code. Signed-off-by: Laxman Dewangan --- drivers/gpio/gpiolib.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index bc788b9..7575ebb 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -2621,15 +2621,16 @@ int gpiod_hog(struct gpio_desc *desc, const char *name, local_desc = gpiochip_request_own_desc(chip, hwnum, name); if (IS_ERR(local_desc)) { - pr_err("requesting hog GPIO %s (chip %s, offset %d) failed\n", - name, chip->label, hwnum); + status = PTR_ERR(local_desc); + pr_err("requesting hog GPIO %s, chip %s, offset %d failed %d\n", + name, chip->label, hwnum, status); return PTR_ERR(local_desc); } status = gpiod_configure_flags(desc, name, dflags); if (status < 0) { - pr_err("setup of hog GPIO %s (chip %s, offset %d) failed\n", - name, chip->label, hwnum); + pr_err("setup of hog GPIO %s chip %s, offset %d failed %d\n", + name, chip->label, hwnum, status); gpiochip_free_own_desc(desc); return status; }