From patchwork Tue Sep 19 13:31:52 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: 13391456 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BE557CD5BBD for ; Tue, 19 Sep 2023 13:33:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=I/pUR1SBElff/LhO/p7SOgfRpskNEBZosyhALjQVf5o=; b=csG0mi/RAGuadp GbV5BlsLJ6cXgpQApK8a6oQURFIoIiiTIMc04+uCxpm5ptEzDTskFKNUk24pynbmWcSfu6/l4kuW8 oSyFrFozST41vlu++iJMsJwBJlRLOoVywAD6kTV9JZr8R6s37SG8ZKsjS5VF/mG7NaWrKfRzpIcRL 24fii5gX02JwL2Rb6oFxeg8CfJs6OsZHyNOS7wAKFm3j0GmOghfOrctyLbgjPCpA2vLTo0873pJeO tRsjf0uvfHOCa/yPEJbCYiV3QARzQs0jLMSasqWk6cnDrJ/qxrbX3CjNAwFmZoH+zs7+J470CsF2A hv0V9gIrqITfF2RyID3g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qiaqJ-000WXw-23; Tue, 19 Sep 2023 13:32:43 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qiaq3-000WM6-2N for linux-arm-kernel@lists.infradead.org; Tue, 19 Sep 2023 13:32:29 +0000 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 1qiapx-0005DK-Mg; Tue, 19 Sep 2023 15:32:21 +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 1qiapw-007T5O-GB; Tue, 19 Sep 2023 15:32:20 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1qiapw-0030gJ-3c; Tue, 19 Sep 2023 15:32:20 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Vinod Koul Cc: Patrice Chotard , linux-arm-kernel@lists.infradead.org, dmaengine@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 44/59] dma: st_fdma: Convert to platform remove callback returning void Date: Tue, 19 Sep 2023 15:31:52 +0200 Message-Id: <20230919133207.1400430-45-u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230919133207.1400430-1-u.kleine-koenig@pengutronix.de> References: <20230919133207.1400430-1-u.kleine-koenig@pengutronix.de> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1770; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=mLxlKUjXeKKBwDxG0klsa06EXs5EvAdx6DPXjRAOFo8=; b=owGbwMvMwMXY3/A7olbonx/jabUkhlTOhQ+3XBPzVvMp9a/6r2U14bZXaPbxlIRfYU+v10RNr WJ/Wx3VyWjMwsDIxSArpshi37gm06pKLrJz7b/LMINYmUCmMHBxCsBELk7jYJgqk1IfuFynLUG4 htXt3gqV4OUv9ym8WjB3S/OT68JzI3ONP3y6nRqzw4Sd25Tv7Le9kS5vr5SqPItVKZ7Am9/8JDd r7t3oq5osktamxw6mPs25b69+aFnARO0fEuJs/4+pPAhx6/kTe6iuaIL9le06Vj55u/Xi56/37/ dJm7bg/P18yS0H3VQk1jXa/bMo9A1VWxpvoqlaNi2xon4m/97ixh3cNjOs7sU4l6V5vloU84Z9Y uTe2X4+E/gFPxlt/9vNobDurd+zGXcZVXXmnDQ3uN32cklWgmL96uo1zAxnJgjk3ZdVL5n1SCY1 OJFBszy18C772aLMuhY96XkLOK+/7LrKvThf0epG/cv/AA== 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: linux-arm-kernel@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230919_063227_819577_A3F5E265 X-CRM114-Status: GOOD ( 15.90 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.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 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() is 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/dma/st_fdma.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/dma/st_fdma.c b/drivers/dma/st_fdma.c index d95c421877fb..145bd0f2496e 100644 --- a/drivers/dma/st_fdma.c +++ b/drivers/dma/st_fdma.c @@ -849,15 +849,13 @@ static int st_fdma_probe(struct platform_device *pdev) return ret; } -static int st_fdma_remove(struct platform_device *pdev) +static void st_fdma_remove(struct platform_device *pdev) { struct st_fdma_dev *fdev = platform_get_drvdata(pdev); devm_free_irq(&pdev->dev, fdev->irq, fdev); st_slim_rproc_put(fdev->slim_rproc); of_dma_controller_free(pdev->dev.of_node); - - return 0; } static struct platform_driver st_fdma_platform_driver = { @@ -866,7 +864,7 @@ static struct platform_driver st_fdma_platform_driver = { .of_match_table = st_fdma_match, }, .probe = st_fdma_probe, - .remove = st_fdma_remove, + .remove_new = st_fdma_remove, }; module_platform_driver(st_fdma_platform_driver);