From patchwork Sat Mar 18 23:53:43 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: 13180019 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 875E7C7619A for ; Sat, 18 Mar 2023 23:54:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229697AbjCRXys (ORCPT ); Sat, 18 Mar 2023 19:54:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46988 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229562AbjCRXyq (ORCPT ); Sat, 18 Mar 2023 19:54:46 -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 6FD391B2CF for ; Sat, 18 Mar 2023 16:54:44 -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 1pdgNm-000425-Ex; Sun, 19 Mar 2023 00:54:42 +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 1pdgNl-0056Ze-Oj; Sun, 19 Mar 2023 00:54:41 +0100 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pdgNl-005zTw-3x; Sun, 19 Mar 2023 00:54:41 +0100 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Helge Deller , Wolfram Sang Cc: linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org, kernel@pengutronix.de Subject: [PATCH 06/51] video: fbdev: bw2: Convert to platform remove callback returning void Date: Sun, 19 Mar 2023 00:53:43 +0100 Message-Id: <20230318235428.272091-7-u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230318235428.272091-1-u.kleine-koenig@pengutronix.de> References: <20230318235428.272091-1-u.kleine-koenig@pengutronix.de> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1682; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=K08anLalQJbiuPYeNp8sUZ/pWKSOh0o3hwGpzmqpom0=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBkFk6tGm/Y42xGuS6iVSl4mROLcu/J5whA1KV9n 8CKNpFmSGOJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZBZOrQAKCRCPgPtYfRL+ TiLuB/wMk4B8Qjqnz5D+Kxh3phhRyXKqPLa8rnnkDYciv63fUbcy6yL8Q7lerSWtze1Y91EPg/M 1TRyXdE3+Q4vlFC+vZyGFxH+2+mCv0aJgZE30RN4+Fw/DMgKqhn3FXlJFNJFfX03VL4TugdlhGX Is1XHkkYdP8VTOmZiPe5q+zjimLtxpktvTOJk2KEtD/xwQZqedzXM7KjAIy9mtoGI29gVf1Wv+h rBYfOteradUM8rkcbApakKCJqoX6THfqMBs7qL2BbCq+iLiqnbQBkt3R06x/GGNRFo5l0nyYQ+N WPdw+sxrN8ed8YVlJvbNpgvzdKRBOnmxSn3VR+FxvqEwSiI+ 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-fbdev@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org 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 (mostly) ignored 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. Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König --- drivers/video/fbdev/bw2.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/video/fbdev/bw2.c b/drivers/video/fbdev/bw2.c index 6403ae07970d..ddd45048a131 100644 --- a/drivers/video/fbdev/bw2.c +++ b/drivers/video/fbdev/bw2.c @@ -352,7 +352,7 @@ static int bw2_probe(struct platform_device *op) return err; } -static int bw2_remove(struct platform_device *op) +static void bw2_remove(struct platform_device *op) { struct fb_info *info = dev_get_drvdata(&op->dev); struct bw2_par *par = info->par; @@ -363,8 +363,6 @@ static int bw2_remove(struct platform_device *op) of_iounmap(&op->resource[0], info->screen_base, info->fix.smem_len); framebuffer_release(info); - - return 0; } static const struct of_device_id bw2_match[] = { @@ -381,7 +379,7 @@ static struct platform_driver bw2_driver = { .of_match_table = bw2_match, }, .probe = bw2_probe, - .remove = bw2_remove, + .remove_new = bw2_remove, }; static int __init bw2_init(void)