From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2147DC433E2 for ; Sat, 5 Sep 2020 22:09:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E4B5120760 for ; Sat, 5 Sep 2020 22:09:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728794AbgIEWJb (ORCPT ); Sat, 5 Sep 2020 18:09:31 -0400 Received: from gloria.sntech.de ([185.11.138.130]:33806 "EHLO gloria.sntech.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728680AbgIEWJ2 (ORCPT ); Sat, 5 Sep 2020 18:09:28 -0400 Received: from ip5f5aa64a.dynamic.kabel-deutschland.de ([95.90.166.74] helo=diego.localnet) by gloria.sntech.de with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1kEgNC-0005mD-Pd; Sun, 06 Sep 2020 00:09:26 +0200 From: Heiko =?ISO-8859-1?Q?St=FCbner?= To: linus.walleij@linaro.org, Jianqun Xu Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, Jianqun Xu Subject: Re: [PATCH 4/6] pinctrl: rockchip: do not set gpio if bank invalid Date: Sun, 06 Sep 2020 00:09:26 +0200 Message-ID: <1687104.4lZP0y4C37@diego> In-Reply-To: <20200831084753.7115-5-jay.xu@rock-chips.com> References: <20200831084753.7115-1-jay.xu@rock-chips.com> <20200831084753.7115-5-jay.xu@rock-chips.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am Montag, 31. August 2020, 10:47:51 CEST schrieb Jianqun Xu: > Add valid check for gpio bank. As this obviously fixes a problem you encountered please elaborate a bit more. Just so that people reading the log later understand when this issue surfaced. Also - maybe even more important - why is this limited to PIN_CONFIG_OUTPUT? Like when the whole bank is not valid, you should be able to return the -ENOTSUPP even before entering the "for" loop in these functions. > Change-Id: Ib03e2910a7316bd61df18236151e371c4d04077a Please remove the changeId. Thanks Heiko > Signed-off-by: Jianqun Xu > --- > drivers/pinctrl/pinctrl-rockchip.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c > index 265d64b8c4f5..6080573155f6 100644 > --- a/drivers/pinctrl/pinctrl-rockchip.c > +++ b/drivers/pinctrl/pinctrl-rockchip.c > @@ -2687,6 +2687,9 @@ static int rockchip_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin, > return rc; > break; > case PIN_CONFIG_OUTPUT: > + if (!bank->valid) > + return -ENOTSUPP; > + > rockchip_gpio_set(&bank->gpio_chip, > pin - bank->pin_base, arg); > rc = _rockchip_pmx_gpio_set_direction(&bank->gpio_chip, > @@ -2752,6 +2755,9 @@ static int rockchip_pinconf_get(struct pinctrl_dev *pctldev, unsigned int pin, > arg = 1; > break; > case PIN_CONFIG_OUTPUT: > + if (!bank->valid) > + return -ENOTSUPP; > + > rc = rockchip_get_mux(bank, pin - bank->pin_base); > if (rc != RK_FUNC_GPIO) > return -EINVAL; >