From patchwork Tue Sep 19 13:31:21 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: 13391383 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 78CD3CD5BC2 for ; Tue, 19 Sep 2023 13:32:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232391AbjISNcZ (ORCPT ); Tue, 19 Sep 2023 09:32:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49044 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232359AbjISNcV (ORCPT ); Tue, 19 Sep 2023 09:32:21 -0400 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [IPv6:2a0a:edc0:2:b01:1d::104]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6B639F9 for ; Tue, 19 Sep 2023 06:32:15 -0700 (PDT) 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 1qiapp-0004e5-SY; Tue, 19 Sep 2023 15:32:13 +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 1qiapp-007T3Q-Fx; Tue, 19 Sep 2023 15:32:13 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1qiapp-0030eK-6q; Tue, 19 Sep 2023 15:32:13 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Vinod Koul Cc: dmaengine@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 13/59] dma: fsl-qdma: Convert to platform remove callback returning void Date: Tue, 19 Sep 2023 15:31:21 +0200 Message-Id: <20230919133207.1400430-14-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=1821; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=IaiQ3AbO3+Iv0bt1r5/Fe5lMbWG55qJkI3qoLoHrIN4=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBlCaG9+gSbrrS9H4bJVk8U7wcWUh6wu9+JEEr3f SmffBrL/5qJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZQmhvQAKCRCPgPtYfRL+ TiiUB/9Pzf/Cmr2qU8SEt6rb/g+rZnxX99jPrNzJK3wkLbtqVUkEyu/BA8EtOH7+SIx5AH/6k6D /wzOiHHeZc2A52bFhydMZfXeICOQI/krP0oy1GKUPK3yEfLhoujxa1MJc828+Im8/HHXQYwIHaS NM2GGW2vyWJL1HnsR7bNwOmGSxuzC3CEHjWuZFjzl/sLZygydptPKcmSss0mPJdPBHsrF69j6cV asBYcR527dswKcbv2G9XAKo11J2O6br2fzRbx9MjBtinvWzYEI2a0y8bbtLTFECKlTWURW0h/jg 1pwldooVntBXic2mo/iTFV5lAnTEjTJXxINBiWo/XBgByZ+1 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: dmaengine@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@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 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/fsl-qdma.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/dma/fsl-qdma.c b/drivers/dma/fsl-qdma.c index a8cc8a4bc610..47cb28468049 100644 --- a/drivers/dma/fsl-qdma.c +++ b/drivers/dma/fsl-qdma.c @@ -1266,7 +1266,7 @@ static void fsl_qdma_cleanup_vchan(struct dma_device *dmadev) } } -static int fsl_qdma_remove(struct platform_device *pdev) +static void fsl_qdma_remove(struct platform_device *pdev) { int i; struct fsl_qdma_queue *status; @@ -1283,7 +1283,6 @@ static int fsl_qdma_remove(struct platform_device *pdev) dma_free_coherent(&pdev->dev, sizeof(struct fsl_qdma_format) * status->n_cq, status->cq, status->bus_addr); } - return 0; } static const struct of_device_id fsl_qdma_dt_ids[] = { @@ -1298,7 +1297,7 @@ static struct platform_driver fsl_qdma_driver = { .of_match_table = fsl_qdma_dt_ids, }, .probe = fsl_qdma_probe, - .remove = fsl_qdma_remove, + .remove_new = fsl_qdma_remove, }; module_platform_driver(fsl_qdma_driver);