From patchwork Wed Sep 27 08:10:15 2023 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: 13400319 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [185.203.201.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C89AB1D524 for ; Wed, 27 Sep 2023 08:10:55 +0000 (UTC) Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1qlPd8-0007vJ-Sw; Wed, 27 Sep 2023 10:10:46 +0200 Received: from [2a0a:edc0:0:900:1d::77] (helo=ptz.office.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1qlPd8-009I6u-FO; Wed, 27 Sep 2023 10:10:46 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1qlPd8-005BQ9-65; Wed, 27 Sep 2023 10:10:46 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Benson Leung , Tzung-Bi Shih Cc: Guenter Roeck , chrome-platform@lists.linux.dev, linux-kernel@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 02/27] platform/chrome: cros_ec_debugfs: Convert to platform remove callback returning void Date: Wed, 27 Sep 2023 10:10:15 +0200 Message-Id: <20230927081040.2198742-3-u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230927081040.2198742-1-u.kleine-koenig@pengutronix.de> References: <20230927081040.2198742-1-u.kleine-koenig@pengutronix.de> Precedence: bulk X-Mailing-List: chrome-platform@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1906; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=RVm8Wdz9Q6CnBZemItiakkOT9n5aPdyjBNWm3I6HY+c=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBlE+NfjPNWqXOBMQ5/PjYP/1aJLOB8pO9m/bGEH +7hRgy6jXuJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZRPjXwAKCRCPgPtYfRL+ TnSXB/4qcuZlqjIVUNIEnCj/w7OquDZWxrEQqF1SMDmuOB+0yDri/5C8xlZccSRZNNvzmBykGrS b83hSmuFoc6kFspKloGJuiBqcTlKhnu+abCJMDIQ040C9XyXO8Oo0w7pMNrj4w89Jx5w1gvaDIT BeFMikNOlGDTobFQf94yy+i8MbhJwREQJt4muLSwg8a4cN3L7jZ/sWY118pcW9nizwI170I1EsT 2fiYscI0cBHRqcb1YLUkrcllUK/1wFHTKk7HCRbo5LIFl9Tcqbr78Vi7bnHpYJU+7r/IsAJwUQu X0/iATJXFUXFLO8y7lEu3BF8iRSxnNBAAmjZhMzKDT0+bMg1 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.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: chrome-platform@lists.linux.dev The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new(), which already returns void. Eventually after all drivers are converted, .remove_new() will be renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König --- drivers/platform/chrome/cros_ec_debugfs.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/platform/chrome/cros_ec_debugfs.c b/drivers/platform/chrome/cros_ec_debugfs.c index c876120e0ebc..091fdc154d79 100644 --- a/drivers/platform/chrome/cros_ec_debugfs.c +++ b/drivers/platform/chrome/cros_ec_debugfs.c @@ -533,14 +533,12 @@ static int cros_ec_debugfs_probe(struct platform_device *pd) return ret; } -static int cros_ec_debugfs_remove(struct platform_device *pd) +static void cros_ec_debugfs_remove(struct platform_device *pd) { struct cros_ec_dev *ec = dev_get_drvdata(pd->dev.parent); debugfs_remove_recursive(ec->debug_info->dir); cros_ec_cleanup_console_log(ec->debug_info); - - return 0; } static int __maybe_unused cros_ec_debugfs_suspend(struct device *dev) @@ -573,7 +571,7 @@ static struct platform_driver cros_ec_debugfs_driver = { .probe_type = PROBE_PREFER_ASYNCHRONOUS, }, .probe = cros_ec_debugfs_probe, - .remove = cros_ec_debugfs_remove, + .remove_new = cros_ec_debugfs_remove, }; module_platform_driver(cros_ec_debugfs_driver);