From patchwork Wed Nov 30 15:21:44 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= X-Patchwork-Id: 1710568 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-pwm-owner@vger.kernel.org; receiver=) Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4NMjcM41dzz23nv for ; Thu, 1 Dec 2022 02:22:11 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229658AbiK3PWK (ORCPT ); Wed, 30 Nov 2022 10:22:10 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45784 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229709AbiK3PWJ (ORCPT ); Wed, 30 Nov 2022 10:22:09 -0500 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E2C2F7E40A for ; Wed, 30 Nov 2022 07:22:08 -0800 (PST) Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1p0OuM-0000A6-KE; Wed, 30 Nov 2022 16:21:58 +0100 Received: from [2a0a:edc0:0:900:1d::77] (helo=ptz.office.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1p0OuL-001Ldo-6R; Wed, 30 Nov 2022 16:21:57 +0100 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1p0OuL-001Vqw-6V; Wed, 30 Nov 2022 16:21:57 +0100 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Thierry Reding Cc: Conor Dooley , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , linux-pwm@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 07/11] pwm: imx27: Propagate errors in .get_state() to the caller Date: Wed, 30 Nov 2022 16:21:44 +0100 Message-Id: <20221130152148.2769768-8-u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221130152148.2769768-1-u.kleine-koenig@pengutronix.de> References: <20221130152148.2769768-1-u.kleine-koenig@pengutronix.de> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=657; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=aNMminSzhEfY4RWjyrPU8ROYOcyHGtsXaYEJfl8fVzg=; b=owEBbQGS/pANAwAKAcH8FHityuwJAcsmYgBjh3T35lCJuM0bY7G7YFVaGLzhoj+JWyIr1kcMFt8E QjNsoqKJATMEAAEKAB0WIQR+cioWkBis/z50pAvB/BR4rcrsCQUCY4d09wAKCRDB/BR4rcrsCcwCCA CVIoVNoOg/MsPy8pRW7krMOjr3DMIlpyphyovx+yqC9uOg0UVxfid7zXlqHI55s081zUuV9uQzIGOa cILu0YQLzzjyRaIDZHzhjREZt8L2lksTHWcP0UCQVeaOvxJCCtGAw+VV3M4aAouFlSZ3BGi4mY2SfI k+hUIKXgYrd/tUaBRnO8rZJxY8eewDgUI8PKE/6Lb4nt+fPnUr7UjdIfnspaZbUApcg3y3jUgesh04 041jE7jJkKAq8YzxZ6tDPmrbyMWOm3Zqjzm9Sgqi2pSweWseAZHAHgYs18B0kNm1BMVphr2rVDO+15 2jcY9Iz2ThSOZFk58B5r7cLTggyOKP X-Developer-Key: i=u.kleine-koenig@pengutronix.de; a=openpgp; fpr=0D2511F322BFAB1C1580266BE2DCDD9132669BD6 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: ukl@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-pwm@vger.kernel.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-pwm@vger.kernel.org .get_state() can return an error indication. Make use of it to propagate failing hardware accesses. Signed-off-by: Uwe Kleine-König --- drivers/pwm/pwm-imx27.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pwm/pwm-imx27.c b/drivers/pwm/pwm-imx27.c index 3a22c2fddc45..29a3089c534c 100644 --- a/drivers/pwm/pwm-imx27.c +++ b/drivers/pwm/pwm-imx27.c @@ -128,7 +128,7 @@ static int pwm_imx27_get_state(struct pwm_chip *chip, ret = pwm_imx27_clk_prepare_enable(imx); if (ret < 0) - return 0; + return ret; val = readl(imx->mmio_base + MX3_PWMCR);