From patchwork Thu Aug 17 02:20:17 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinjie Ruan X-Patchwork-Id: 13355886 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 905D6C2FC0F for ; Thu, 17 Aug 2023 02:21:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:CC :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=Z0AdoRXR87KcimXbyrj1WU8zk2MlxoKc0HmPQxP6/lE=; b=4SLp3Zs8M6iYKE u0XQARw7RgSP4YTH2yi9uOfaIXIhUEzYldJZhSMpTVPBgZpmuIOHXEZ/LTwGAExy9JjMm9fxW8iv2 R34Y39JxJl8NYIZE7P9SbwVq6I/o1e9YttgRFhf8LNuebvKTqVhe01ZRq1OaN2HVIYyqDFRPPQROh tNCi225OJLifJ9d3M5EjxT7hQFg2KBoQTw9aS/LxzawlNZmonyqQc8GK46DgWSVERzsC9Lz9Nmx+5 V6tMBFprm8hGI4FEhsxiqu6OIzF6dQIUpfUz+6MweeAFItqWigDuNuKupxZvjwNAlUbD1Al7oz8sy dUNz8DNjf6dfuQFU6Rmw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qWSd1-005LVn-1Y; Thu, 17 Aug 2023 02:20:51 +0000 Received: from szxga01-in.huawei.com ([45.249.212.187]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qWScy-005LVC-0r for linux-arm-kernel@lists.infradead.org; Thu, 17 Aug 2023 02:20:50 +0000 Received: from kwepemi500008.china.huawei.com (unknown [172.30.72.56]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4RR7tR2CnZztS5y; Thu, 17 Aug 2023 10:17:03 +0800 (CST) Received: from huawei.com (10.90.53.73) by kwepemi500008.china.huawei.com (7.221.188.139) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.31; Thu, 17 Aug 2023 10:20:40 +0800 From: Ruan Jinjie To: , , Codrin Ciubotariu , Andi Shyti , Nicolas Ferre , Alexandre Belloni , Claudiu Beznea , Oleksij Rempel , Pengutronix Kernel Team , Shawn Guo , Sascha Hauer , Fabio Estevam , NXP Linux Team , Wolfram Sang , Linus Walleij , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Yang Li CC: Subject: [PATCH -next v2] I2C: Fix return value check for devm_pinctrl_get() Date: Thu, 17 Aug 2023 10:20:17 +0800 Message-ID: <20230817022018.3527570-1-ruanjinjie@huawei.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-Originating-IP: [10.90.53.73] X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To kwepemi500008.china.huawei.com (7.221.188.139) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230816_192048_530214_1BC4975D X-CRM114-Status: GOOD ( 11.66 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The devm_pinctrl_get() function returns error pointers and never returns NULL. Update the checks accordingly. Fixes: 543aa2c4da8b ("i2c: at91: Move to generic GPIO bus recovery") Fixes: fd8961c5ba9e ("i2c: imx: make bus recovery through pinctrl optional") Signed-off-by: Ruan Jinjie Acked-by: Oleksij Rempel Reviewed-by: Linus Walleij Acked-by: Nicolas Ferre --- v2: - Remove NULL check instead of using IS_ERR_OR_NULL() to avoid leaving them behind. - Update the commit title and message. --- drivers/i2c/busses/i2c-at91-master.c | 2 +- drivers/i2c/busses/i2c-imx.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/i2c/busses/i2c-at91-master.c b/drivers/i2c/busses/i2c-at91-master.c index 94cff1cd527e..2bf1df5ef473 100644 --- a/drivers/i2c/busses/i2c-at91-master.c +++ b/drivers/i2c/busses/i2c-at91-master.c @@ -831,7 +831,7 @@ static int at91_init_twi_recovery_gpio(struct platform_device *pdev, struct i2c_bus_recovery_info *rinfo = &dev->rinfo; rinfo->pinctrl = devm_pinctrl_get(&pdev->dev); - if (!rinfo->pinctrl || IS_ERR(rinfo->pinctrl)) { + if (IS_ERR(rinfo->pinctrl)) { dev_info(dev->dev, "can't get pinctrl, bus recovery not supported\n"); return PTR_ERR(rinfo->pinctrl); } diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c index 10e89586ca72..05d55893f04e 100644 --- a/drivers/i2c/busses/i2c-imx.c +++ b/drivers/i2c/busses/i2c-imx.c @@ -1388,7 +1388,7 @@ static int i2c_imx_init_recovery_info(struct imx_i2c_struct *i2c_imx, struct i2c_bus_recovery_info *rinfo = &i2c_imx->rinfo; i2c_imx->pinctrl = devm_pinctrl_get(&pdev->dev); - if (!i2c_imx->pinctrl || IS_ERR(i2c_imx->pinctrl)) { + if (IS_ERR(i2c_imx->pinctrl)) { dev_info(&pdev->dev, "can't get pinctrl, bus recovery not supported\n"); return PTR_ERR(i2c_imx->pinctrl); }