Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755020Ab3JaR6X (ORCPT ); Thu, 31 Oct 2013 13:58:23 -0400 Received: from mail-la0-f42.google.com ([209.85.215.42]:43645 "EHLO mail-la0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752158Ab3JaR6S (ORCPT ); Thu, 31 Oct 2013 13:58:18 -0400 From: Johan Hovold To: Richard Purdie , Jingoo Han Cc: Nicolas Ferre , Tomi Valkeinen , Jean-Christophe Plagniol-Villard , Andrew Morton , linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold Subject: [PATCH v3 4/9] backlight: atmel-pwm-bl: clean up probe error handling Date: Thu, 31 Oct 2013 18:57:39 +0100 Message-Id: <1383242264-7652-5-git-send-email-jhovold@gmail.com> X-Mailer: git-send-email 1.8.4.2 In-Reply-To: <1383242264-7652-1-git-send-email-jhovold@gmail.com> References: <1383064064-4983-1-git-send-email-jhovold@gmail.com> <1383242264-7652-1-git-send-email-jhovold@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2295 Lines: 83 Clean up probe error handling by checking parameters before any allocations and removing an obsolete error label. Also remove unnecessary reset of private gpio number. Acked-by: Jingoo Han Signed-off-by: Johan Hovold --- drivers/video/backlight/atmel-pwm-bl.c | 31 ++++++++++++------------------- 1 file changed, 12 insertions(+), 19 deletions(-) diff --git a/drivers/video/backlight/atmel-pwm-bl.c b/drivers/video/backlight/atmel-pwm-bl.c index 4886028..01af5c2 100644 --- a/drivers/video/backlight/atmel-pwm-bl.c +++ b/drivers/video/backlight/atmel-pwm-bl.c @@ -126,40 +126,33 @@ static int atmel_pwm_bl_probe(struct platform_device *pdev) struct atmel_pwm_bl *pwmbl; int retval; + pdata = dev_get_platdata(&pdev->dev); + if (!pdata) + return -ENODEV; + + if (pdata->pwm_compare_max < pdata->pwm_duty_max || + pdata->pwm_duty_min > pdata->pwm_duty_max || + pdata->pwm_frequency == 0) + return -EINVAL; + pwmbl = devm_kzalloc(&pdev->dev, sizeof(struct atmel_pwm_bl), GFP_KERNEL); if (!pwmbl) return -ENOMEM; pwmbl->pdev = pdev; - - pdata = dev_get_platdata(&pdev->dev); - if (!pdata) { - retval = -ENODEV; - goto err_free_mem; - } - - if (pdata->pwm_compare_max < pdata->pwm_duty_max || - pdata->pwm_duty_min > pdata->pwm_duty_max || - pdata->pwm_frequency == 0) { - retval = -EINVAL; - goto err_free_mem; - } - pwmbl->pdata = pdata; pwmbl->gpio_on = pdata->gpio_on; retval = pwm_channel_alloc(pdata->pwm_channel, &pwmbl->pwmc); if (retval) - goto err_free_mem; + return retval; if (pwmbl->gpio_on != -1) { retval = devm_gpio_request(&pdev->dev, pwmbl->gpio_on, "gpio_atmel_pwm_bl"); - if (retval) { - pwmbl->gpio_on = -1; + if (retval) goto err_free_pwm; - } /* Turn display off by default. */ retval = gpio_direction_output(pwmbl->gpio_on, @@ -197,7 +190,7 @@ static int atmel_pwm_bl_probe(struct platform_device *pdev) err_free_pwm: pwm_channel_free(&pwmbl->pwmc); -err_free_mem: + return retval; } -- 1.8.4.2 -- 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/