Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932982AbcDTOiT (ORCPT ); Wed, 20 Apr 2016 10:38:19 -0400 Received: from lists.s-osg.org ([54.187.51.154]:50927 "EHLO lists.s-osg.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932117AbcDTOiR (ORCPT ); Wed, 20 Apr 2016 10:38:17 -0400 From: Javier Martinez Canillas To: linux-kernel@vger.kernel.org Cc: Javier Martinez Canillas , linux-samsung-soc@vger.kernel.org, Krzysztof Kozlowski , Wolfram Sang , Kukjin Kim , linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 1/2] i2c: s3c2410: Print errno code in error logs Date: Wed, 20 Apr 2016 10:37:55 -0400 Message-Id: <1461163076-5959-1-git-send-email-javier@osg.samsung.com> X-Mailer: git-send-email 2.5.5 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1632 Lines: 51 The driver not always prints the error code in case of a failure but this information can be very useful for debugging. So let's print if available. Signed-off-by: Javier Martinez Canillas --- Hello, This patch and 2/2 were only build tested because I don't have access to a board using this IP block. I just noticed these issues when comparing the i2c-s3c2410 driver with i2c-exynos5 where I did some fixes recently. I think the patches are simple enough that is safe to pick them but of course testing will be highly appreciated. Best regards, Javier Changes in v2: - Don't print the errno code on probe since it's already printed by the core. Suggested by Krzysztof Kozlowski. drivers/i2c/busses/i2c-s3c2410.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c index 362a6de54833..13f67df65c45 100644 --- a/drivers/i2c/busses/i2c-s3c2410.c +++ b/drivers/i2c/busses/i2c-s3c2410.c @@ -944,7 +944,7 @@ static int s3c24xx_i2c_cpufreq_transition(struct notifier_block *nb, i2c_unlock_adapter(&i2c->adap); if (ret < 0) - dev_err(i2c->dev, "cannot find frequency\n"); + dev_err(i2c->dev, "cannot find frequency (%d)\n", ret); else dev_info(i2c->dev, "setting freq %d\n", got); } @@ -995,7 +995,8 @@ static int s3c24xx_i2c_parse_dt_gpio(struct s3c24xx_i2c *i2c) ret = gpio_request(gpio, "i2c-bus"); if (ret) { - dev_err(i2c->dev, "gpio [%d] request failed\n", gpio); + dev_err(i2c->dev, "gpio [%d] request failed (%d)\n", + gpio, ret); goto free_gpio; } } -- 2.5.5