From patchwork Tue Jun 28 14:03:10 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: 586213 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5F13ECCA480 for ; Tue, 28 Jun 2022 14:03:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1347288AbiF1ODZ (ORCPT ); Tue, 28 Jun 2022 10:03:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42818 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347330AbiF1ODY (ORCPT ); Tue, 28 Jun 2022 10:03:24 -0400 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 275762A247 for ; Tue, 28 Jun 2022 07:03:23 -0700 (PDT) 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 1o6BoH-0008Ko-3A; Tue, 28 Jun 2022 16:03:21 +0200 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 1o6BoC-003DTA-RZ; Tue, 28 Jun 2022 16:03:20 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1o6BoE-001gzK-Q5; Tue, 28 Jun 2022 16:03:18 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Pavel Machek , Linus Walleij Cc: linux-leds@vger.kernel.org, kernel@pengutronix.de, linux-i2c@vger.kernel.org Subject: [PATCH 4/6] leds: lm3601x: Improve error reporting for problems during .remove() Date: Tue, 28 Jun 2022 16:03:10 +0200 Message-Id: <20220628140313.74984-5-u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220628140313.74984-1-u.kleine-koenig@pengutronix.de> References: <20220628140313.74984-1-u.kleine-koenig@pengutronix.de> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1541; h=from:subject; bh=KYZrnMIsHWPEQ0VMi38pLX+3N1MFh5aofr4bwRSMKj8=; b=owEBbQGS/pANAwAKAcH8FHityuwJAcsmYgBiuwoQedus2oXqZ4lI1Y7ykicmNsI6/10UBQjPhQof kzxCC1qJATMEAAEKAB0WIQR+cioWkBis/z50pAvB/BR4rcrsCQUCYrsKEAAKCRDB/BR4rcrsCbcaB/ 45l952SnWhWwVGYrGXrGIq2ENWvFSEXwsGGIXxflWkNC6ZcUKnh+l9powkiWgrSTHVCA0TNemxsKzE V4lQyZYwo/Chp+nZxT46S/7NSOO22lgTfVI+ssVDQdXZkKuRn0XwJV1FXahhhzSlAzv4yK3/juoGy0 9zU6mve+I2dD4pr5qavC2P9dDMNWoJN1l/4oBzm17p5dC7j20LC7JN70RaNnqut5RSHNcpVF5J3IBJ eeAJWCQf15BilBfwAiya8f04SDeYfmk6yybww2ermpHzsQPYceTZdUZYOrXArjF63q89uzMVa96M18 /F7pA2Ak8HF7TBvjhkhHo+xCUF9WV+ 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-leds@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-leds@vger.kernel.org Returning an error value in an i2c remove callback results in a generic error message being emitted by the i2c core, but otherwise it doesn't make a difference. The device goes away anyhow and the devm cleanups are called. So instead of triggering the generic i2c error message, emit a more helpful message if a problem occurs and return 0 to suppress the generic message. This patch is a preparation for making i2c remove callbacks return void. Signed-off-by: Uwe Kleine-König Forwarded: id:20220513102516.271920-1-u.kleine-koenig@pengutronix.de --- drivers/leds/flash/leds-lm3601x.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/leds/flash/leds-lm3601x.c b/drivers/leds/flash/leds-lm3601x.c index 3d1272748201..37e1d6e68687 100644 --- a/drivers/leds/flash/leds-lm3601x.c +++ b/drivers/leds/flash/leds-lm3601x.c @@ -443,10 +443,15 @@ static int lm3601x_probe(struct i2c_client *client) static int lm3601x_remove(struct i2c_client *client) { struct lm3601x_led *led = i2c_get_clientdata(client); + int ret; - return regmap_update_bits(led->regmap, LM3601X_ENABLE_REG, - LM3601X_ENABLE_MASK, - LM3601X_MODE_STANDBY); + ret = regmap_update_bits(led->regmap, LM3601X_ENABLE_REG, + LM3601X_ENABLE_MASK, LM3601X_MODE_STANDBY); + if (ret) + dev_warn(&client->dev, + "Failed to put into standby (%pe)\n", ERR_PTR(ret)); + + return 0; } static const struct i2c_device_id lm3601x_id[] = {