From patchwork Mon Mar 4 21:28:39 2024 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: 13581288 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 CB4BBC48BF6 for ; Mon, 4 Mar 2024 21:29:23 +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=vOUwfRKU7ZMudMb+rOlb8wY8hRNKI+ZPe7NWGiNrqRk=; b=ipJHQF5D8g8y9d U95jinkrSmXnp/tIvOc8ggnvJnQOR3Cumygc2XIPjZjDTNgbnGXpazZdiIIuRNDb6YJZ8QwOVXlIL xyOkN0uvN0YLaM1bX5XxMbYtZOf6IDlQI9DdP6ANikuqdM4awenTY539s+UNfSwgX8f3AbY/rE3q3 GMVNgklo6KO04rZic0ThmoM4w8snPVgnpA09ickjJR5+UrfOiVM1X80xRL1reU/tbquJBQctZJ6PW wOfDiNBLr6B58WLgTQcHBaHalSrgWkj1kSmGC+VX2DYI9PHN9zSt9imnVP2mHaHecV6AI2w2jTJwb PNULn111a9Vz2UyBqtjw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rhFrz-0000000Alx1-1LqQ; Mon, 04 Mar 2024 21:29:11 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rhFrs-0000000AluH-38FY for linux-arm-kernel@lists.infradead.org; Mon, 04 Mar 2024 21:29:06 +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 1rhFrl-0002hb-4Q; Mon, 04 Mar 2024 22:28:57 +0100 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 1rhFrk-004QhM-2A; Mon, 04 Mar 2024 22:28:56 +0100 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1rhFrj-00H4uF-3A; Mon, 04 Mar 2024 22:28:55 +0100 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Chanwoo Choi , MyungJoo Ham , Kyungmin Park Cc: Krzysztof Kozlowski , Alim Akhtar , linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 1/5] PM / devfreq: exynos-nocp: Convert to platform remove callback returning void Date: Mon, 4 Mar 2024 22:28:39 +0100 Message-ID: <8385454855ae5899a4db7655e7a57629855157d8.1709587301.git.u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1674; i=u.kleine-koenig@pengutronix.de; h=from:subject:message-id; bh=0GTgiI9XNwKLwdfdM0l4i/fGODkeH75DZ0pc7W7YrQ8=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBl5j0IAzLtKlpzTiHhWfwGAM2RoJHs3l7fVAgvJ 3RuwWqj5UKJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZeY9CAAKCRCPgPtYfRL+ TpoKB/93Yq8l627M/Q1v+xnPyLEA3as2YGI1ineGJcEWTWPQbYY031YgDzhZsGULV10dpNbF0xU LxsY1kSWt2tKBqxkq0JtjdYuBkc/2yc5DMx6uoRSFbsF5IvShjv4v8BRFqq647mVVJsAoFpo3gs E15REVIFsTsxvR8IK6md3OPDuq5yDTBSglXbL06zbbBMe4sEX7CWUQgP0ABWE8Mkjd0zHGiKu+f ew72rMZrvjtzyYhdO6XdYAdPpA9ll9IqZa+Mnrz1H38rg7xdp/NupLiozyTMVr1uoxhn4i6wdoi ajKGup2aDg/yzE4YI/Tsa55qhpqazRAkwsezFHOznnK0xJ0E 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-20240304_132904_840744_09C6278A X-CRM114-Status: GOOD ( 17.85 ) 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() 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/devfreq/event/exynos-nocp.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/devfreq/event/exynos-nocp.c b/drivers/devfreq/event/exynos-nocp.c index c1cc23bcb995..5edc522f715c 100644 --- a/drivers/devfreq/event/exynos-nocp.c +++ b/drivers/devfreq/event/exynos-nocp.c @@ -275,18 +275,16 @@ static int exynos_nocp_probe(struct platform_device *pdev) return 0; } -static int exynos_nocp_remove(struct platform_device *pdev) +static void exynos_nocp_remove(struct platform_device *pdev) { struct exynos_nocp *nocp = platform_get_drvdata(pdev); clk_disable_unprepare(nocp->clk); - - return 0; } static struct platform_driver exynos_nocp_driver = { .probe = exynos_nocp_probe, - .remove = exynos_nocp_remove, + .remove_new = exynos_nocp_remove, .driver = { .name = "exynos-nocp", .of_match_table = exynos_nocp_id_match, From patchwork Mon Mar 4 21:28:40 2024 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: 13581287 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 F06C8C54E49 for ; Mon, 4 Mar 2024 21:29:22 +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=OikYwIIY79dStkvpWjSJyT47HpRAXCoRjWN3fB5YQuo=; b=H/QVXBnIrmEBMF h0xwk9nuP7kY05WIwZRQ6BM0+YkOyTepzXprSrvx4NCz7SWXQhbAOp4Y4+tBAL8ZK5eqhL43jwbFA 5dWMRurMYGv4OrbVzWwHiKU/g3fSel6ZIM3sQj82T0zIloD/+/dy4Azx8jpBTL4re3q3eb5iKIcWZ l1ClOY2He7qlqLtSbAuj34j0eB+kigOowAV86Z5SMxOHS20b1L04w5eIxQHdDrB6BYtQM41s8KrKb LVUsnU18IgjXLYQEbZSBg9ZHzie7eefGqH+IuJCNCdoDpYFcrfxPXMjuQd6ibmwtALQ7b03XiIeEh cq7Z+WiJPweic2rW9MzA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rhFru-0000000Alv7-1dGQ; Mon, 04 Mar 2024 21:29:07 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rhFrr-0000000Altn-0qD9 for linux-arm-kernel@lists.infradead.org; Mon, 04 Mar 2024 21:29:04 +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 1rhFrl-0002hc-4Q; Mon, 04 Mar 2024 22:28:57 +0100 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 1rhFrk-004QhP-8m; Mon, 04 Mar 2024 22:28:56 +0100 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1rhFrk-00H4uJ-0a; Mon, 04 Mar 2024 22:28:56 +0100 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Chanwoo Choi , MyungJoo Ham , Kyungmin Park Cc: Krzysztof Kozlowski , Alim Akhtar , linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 2/5] PM / devfreq: exynos-ppmu: Convert to platform remove callback returning void Date: Mon, 4 Mar 2024 22:28:40 +0100 Message-ID: <028822439693e7d6a74f33385a3f634bdd7143dd.1709587301.git.u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1679; i=u.kleine-koenig@pengutronix.de; h=from:subject:message-id; bh=WkAMU1jS5gkMcXbruT0u3SkkBeEdVbI821m1pxNR9Wc=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBl5j0Jb0TQlki/z6X9KXH7N4rgac6Lp9lbuNz7h gP4vNA6OdGJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZeY9CQAKCRCPgPtYfRL+ TqTrB/wIv8LL0R1fUF2/7b5G90138vYJMxUul0GE2smFvfiKra8cp1Xn8D02oQ7FM5eUOH4Ie09 reB94nWjr04NeYD0rFQqYOzhA9Fdawt5QTumuVVW1US2C35npQziC6GN18RLKRjJPJJfRblmJtE ucMb26BdgJrTguBbD+PwzEt8ZmVLZkIZlJ5S8xn2Dyb4eJadbp2bxxoWW4jQwI/AOWxYl5GR+/4 PO1jJ7U4lySywt/EhhGDrtAf163QHJtM07Vgd95zOoqy+ecFdzqxSyR+BJgzWvZOITTjCgP0Hrr hjCwK0Crq06txUdyHo4eRIbROwoJDCidajzEf3I4sQnahtwo 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-20240304_132903_259947_CB299727 X-CRM114-Status: GOOD ( 18.04 ) 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() 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/devfreq/event/exynos-ppmu.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/devfreq/event/exynos-ppmu.c b/drivers/devfreq/event/exynos-ppmu.c index 56bac4702006..7002df20a49e 100644 --- a/drivers/devfreq/event/exynos-ppmu.c +++ b/drivers/devfreq/event/exynos-ppmu.c @@ -692,18 +692,16 @@ static int exynos_ppmu_probe(struct platform_device *pdev) return 0; } -static int exynos_ppmu_remove(struct platform_device *pdev) +static void exynos_ppmu_remove(struct platform_device *pdev) { struct exynos_ppmu *info = platform_get_drvdata(pdev); clk_disable_unprepare(info->ppmu.clk); - - return 0; } static struct platform_driver exynos_ppmu_driver = { .probe = exynos_ppmu_probe, - .remove = exynos_ppmu_remove, + .remove_new = exynos_ppmu_remove, .driver = { .name = "exynos-ppmu", .of_match_table = exynos_ppmu_id_match, From patchwork Mon Mar 4 21:28:41 2024 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: 13581290 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 09697C54E41 for ; Mon, 4 Mar 2024 21:29:27 +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=zqiahiKh0rpe3YzOwWEtfVB8XCtwefIdWFpf4Xh2HsU=; b=jbY7g+BRbpy5Sh 9dG4PGLa4FsmJOr/zzQzuMmR6MeuAW9mzPZRNKnNFpiKUfE3S12XRGas3Q92LAhZNo51bGvJ/SitM p8QFhC3mOUPyUspqxTJat2q1FExAyctR4pL0zlftwjWUy9kX+QDK8rLIRadehp1zdNVBhJmKQi8lK LIkKtsdust1QL8ir4tWBbwhd9XnB9GIR8YsuyTzyBidA/n/kLwLhAODH3SGTDb/ix8xJFLMF+f6xM RyxI+ECnL3enbil9nFKCkwX82OKetPN8w1Cg6bGmYkePE1kMB7eki0ME5N2bH8Xjk90lQXCPlOEiE 5rcGCuFFg7QHDpzLzWhg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rhFs4-0000000Aly7-0Rco; Mon, 04 Mar 2024 21:29:16 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rhFrx-0000000Alva-2GOb for linux-arm-kernel@lists.infradead.org; Mon, 04 Mar 2024 21:29:10 +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 1rhFrl-0002hd-8k; Mon, 04 Mar 2024 22:28:57 +0100 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 1rhFrk-004QhS-GL; Mon, 04 Mar 2024 22:28:56 +0100 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1rhFrk-00H4uN-1L; Mon, 04 Mar 2024 22:28:56 +0100 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: MyungJoo Ham , Kyungmin Park , Chanwoo Choi Cc: Matthias Brugger , AngeloGioacchino Del Regno , linux-pm@vger.kernel.org, kernel@pengutronix.de, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Subject: [PATCH 3/5] PM / devfreq: mtk-cci: Convert to platform remove callback returning void Date: Mon, 4 Mar 2024 22:28:41 +0100 Message-ID: X-Mailer: git-send-email 2.43.0 In-Reply-To: References: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1957; i=u.kleine-koenig@pengutronix.de; h=from:subject:message-id; bh=R9sXnYv3VfRGcrZ5/KZOGdZaFSWQmEEW5PecCI0UwYU=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBl5j0KB0prRkwFiMOZlnfNuNGvP6+/rMnxv/n7N Rmyl6mVSe6JATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZeY9CgAKCRCPgPtYfRL+ TjNaB/9VL/XniiKx+uwHc1n1ORgvJTG3GMwQkthaAmp6NBA7F9+JeNaXgtRvl59DQZC8L7KrFyz P5xxfmwd9/SrqLwyOjlYWVp7VTiWVwIUil+TSfKbclPOoJtue895UU9sTr9MzG8H5WXFmEflXxU Q1uQCZ/tsrq9oiJW8wlESgE5ftBzjo37qa5yFSCqC/Oj2TIN+m4xGUJlLmpnzvops+1CpFfdsck IWWx+YFUUDtp0jJf/In7RhQMkwXbTLWppXoUfY4JWifAMEBHYKyfA0F7euWxvPJh5Prk2ZCK5nQ Ionn2GSnLV5jqXltxa6FI2/q72Zc/IDm7wIUSVt2oaG8ZucS 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-20240304_132909_600091_C939B911 X-CRM114-Status: GOOD ( 18.60 ) 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() 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/devfreq/mtk-cci-devfreq.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/devfreq/mtk-cci-devfreq.c b/drivers/devfreq/mtk-cci-devfreq.c index 11bc3d03494c..7ad5225b0381 100644 --- a/drivers/devfreq/mtk-cci-devfreq.c +++ b/drivers/devfreq/mtk-cci-devfreq.c @@ -392,7 +392,7 @@ static int mtk_ccifreq_probe(struct platform_device *pdev) return ret; } -static int mtk_ccifreq_remove(struct platform_device *pdev) +static void mtk_ccifreq_remove(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct mtk_ccifreq_drv *drv; @@ -405,8 +405,6 @@ static int mtk_ccifreq_remove(struct platform_device *pdev) regulator_disable(drv->proc_reg); if (drv->sram_reg) regulator_disable(drv->sram_reg); - - return 0; } static const struct mtk_ccifreq_platform_data mt8183_platform_data = { @@ -432,7 +430,7 @@ MODULE_DEVICE_TABLE(of, mtk_ccifreq_machines); static struct platform_driver mtk_ccifreq_platdrv = { .probe = mtk_ccifreq_probe, - .remove = mtk_ccifreq_remove, + .remove_new = mtk_ccifreq_remove, .driver = { .name = "mtk-ccifreq", .of_match_table = mtk_ccifreq_machines, From patchwork Mon Mar 4 21:28:43 2024 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: 13581286 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 B2B31C48BF6 for ; Mon, 4 Mar 2024 21:29:21 +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=f/xm7hwT4fRpFRQ3JVHCPvIpKJ+SCsbt/Ay1dB7UAaU=; b=zlBIaaJRND00Z3 Qq5eh5dU6YYRsFzH26meNp+K7CKJ+UzFqhZjzEqYpSc/TSVQvBZlEgPrCWtUDzNqCRw1se7j4d0eh 5UpSp/JYZaplcb5YEiU2XriUm1sUqlJo/3zbv1tadYhmtXLZsuRWYeXFp7RpaDJRqsXs51l2OoyHb Kq6XNClGjplnLDFEQdK2nI4654V//KwdkDG+DICjWHnKu7tViyW4bDhIVrPLggAGOYUvCXe4fXY4d ++JV4+vGMKWLE9DCkz6DwoZry10YFDU1gtBAsG41hm70D1/dv6Ff2DS8L267Z3sdD+dTtJrOXF95h cr+nM5AMoBQzMKzWBKzQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rhFs1-0000000Alxb-1dZs; Mon, 04 Mar 2024 21:29:13 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rhFru-0000000Alux-0klJ for linux-arm-kernel@lists.infradead.org; Mon, 04 Mar 2024 21:29:09 +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 1rhFrm-0002hx-4i; Mon, 04 Mar 2024 22:28:58 +0100 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 1rhFrk-004QhY-W6; Mon, 04 Mar 2024 22:28:57 +0100 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1rhFrk-00H4uV-2u; Mon, 04 Mar 2024 22:28:56 +0100 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: MyungJoo Ham , Kyungmin Park , Chanwoo Choi Cc: Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, kernel@pengutronix.de Subject: [PATCH 5/5] PM / devfreq: sun8i-a33-mbus: Convert to platform remove callback returning void Date: Mon, 4 Mar 2024 22:28:43 +0100 Message-ID: <0ca3f35bdf9549ccda7c6c10a476f28350d987df.1709587301.git.u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2083; i=u.kleine-koenig@pengutronix.de; h=from:subject:message-id; bh=PBrEihezR5AA0ClQxijXvIVfy7IrlYrl4T4cYnc+AtQ=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBl5j0Nd/4vLbyJrlXlBYNLAsGnaqFmZKtQd7jX+ srJRfHCOFqJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZeY9DQAKCRCPgPtYfRL+ TlM6CACbzzNWmx8B9+BCzK0no3gbBhtyaxUgC5dVdB5//xc7v2zhLurgFAbxXxysS/W3uJaFJ20 uDPXWRhb0pck20FRdiFPTu2laILpgow/u97a76d8Qch1dZUeLLgG3X61Y59PhP67Yb2eizO/92M vsV2a7bGLIK7g6+HXU0DhLbRYjemnmX2Wem8Ob6e1MXcVW05E25E3b7mvC8CHjlkIrduImVWYth X9ic/6CeF/54+KUL2LYdSLYH0UV3nPNpHBEwjMZhfdz/r0hkoOW29227mwb3GBTOM4O0vBC9pfT E73seSaecZz8dKy5CFKqs8hwHHseEra4F4MYorwHXI/o6j7D 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-20240304_132907_662344_8E1ECF7F X-CRM114-Status: GOOD ( 18.06 ) 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() 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 Acked-by: Jernej Skrabec --- drivers/devfreq/sun8i-a33-mbus.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/devfreq/sun8i-a33-mbus.c b/drivers/devfreq/sun8i-a33-mbus.c index 13d32213139f..bcf654f4ff96 100644 --- a/drivers/devfreq/sun8i-a33-mbus.c +++ b/drivers/devfreq/sun8i-a33-mbus.c @@ -458,7 +458,7 @@ static int sun8i_a33_mbus_probe(struct platform_device *pdev) return dev_err_probe(dev, ret, err); } -static int sun8i_a33_mbus_remove(struct platform_device *pdev) +static void sun8i_a33_mbus_remove(struct platform_device *pdev) { struct sun8i_a33_mbus *priv = platform_get_drvdata(pdev); unsigned long initial_freq = priv->profile.initial_freq; @@ -475,8 +475,6 @@ static int sun8i_a33_mbus_remove(struct platform_device *pdev) clk_rate_exclusive_put(priv->clk_mbus); clk_rate_exclusive_put(priv->clk_dram); clk_disable_unprepare(priv->clk_bus); - - return 0; } static const struct sun8i_a33_mbus_variant sun50i_a64_mbus = { @@ -497,7 +495,7 @@ static SIMPLE_DEV_PM_OPS(sun8i_a33_mbus_pm_ops, static struct platform_driver sun8i_a33_mbus_driver = { .probe = sun8i_a33_mbus_probe, - .remove = sun8i_a33_mbus_remove, + .remove_new = sun8i_a33_mbus_remove, .driver = { .name = "sun8i-a33-mbus", .of_match_table = sun8i_a33_mbus_of_match,