From mboxrd@z Thu Jan 1 00:00:00 1970 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 61DACC433FE for ; Tue, 18 Jan 2022 02:21:38 +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=mIp7ptQS3EYX7HN7LCjtWCyclCSZQkO22B/fPqHfESo=; b=rEuNw1vSgPQjj4 nwj+Tti/xaOgwA3Px2Hb7qfMEWer7br5/1bFn1nKckNbYjUVVZ6j1dDkEZ4sQ4gi41zhESIb9s5M8 lHRIYGKc8MSHnE0PMOrhRQMP123+zrTYy1P3w/ZtatVx0N50k0Q46L5Ej7zMLe3rIogtI/3ef1Re4 06ncpsIG5uRoDF7AgaTm57FNDVABU4e2RbW2R0QznJ7Ce8uxlj2Ll2ZIAYy8qpa1W13DmPNn5fFk2 WROv5VhD2EGic1aIi61Z2j1PHTHa90zV8eIg/aPck1MmCmu27aoR797/BLKPxsugyjGYRBPSPoaLI NHnIbS0gDwm03BPg62KQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1n9e7n-00Gsio-MJ; Tue, 18 Jan 2022 02:21:31 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1n9e7k-00Gsgp-7z; Tue, 18 Jan 2022 02:21:30 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id B62AE612DF; Tue, 18 Jan 2022 02:21:27 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C9749C36AE3; Tue, 18 Jan 2022 02:21:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1642472487; bh=KuDx/9P+Wps9AtzStWZ2hI77/d8sYbhn6+5ghzmQjp0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UWKdolORwwfQVXdJfYNLLmeAVgZ7i1HAwEUO3EfuT1EnALSjd+Whw2cZv3uBv/XQy LnDCS2ai1HRjFaj2RPlI91aPMStiCH5j7Ipf9FKCpo/u/jjEeFqGpptxabBgPOpIjv HUCGwZ9V/Bl+ZvAJtbIVbOGEl1ruc3m94GheNvcgpXyZEBnXQgBCz/JIS/BYKM49X+ qx0xAxut7kNPs2Sdx/pyuUHGZvdBEYHAinD/onjL0KcVh4tooatsKWOIdvO8HjXmWM hbjOdN9Ke7Fto1h7uyxwyVznn0nJd6V2mlZHYNc0EjMdz4hUnxpKSt3NgXEe5JuiFD R9O/ysKyIbUZA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Amjad Ouled-Ameur , Jerome Brunet , Greg Kroah-Hartman , Sasha Levin , balbi@kernel.org, narmstrong@baylibre.com, khilman@baylibre.com, p.zabel@pengutronix.de, linux-usb@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org Subject: [PATCH AUTOSEL 5.16 029/217] usb: dwc3: meson-g12a: fix shared reset control use Date: Mon, 17 Jan 2022 21:16:32 -0500 Message-Id: <20220118021940.1942199-29-sashal@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220118021940.1942199-1-sashal@kernel.org> References: <20220118021940.1942199-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220117_182128_391660_6E491FA8 X-CRM114-Status: GOOD ( 14.92 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org From: Amjad Ouled-Ameur [ Upstream commit 4ce3b45704d5ef46fb4b28083c8aba6716fabf3b ] reset_control_(de)assert() calls are called on a shared reset line when reset_control_reset has been used. This is not allowed by the reset framework. Use reset_control_rearm() call in suspend() and remove() as a way to state that the resource is no longer used, hence the shared reset line may be triggered again by other devices. Use reset_control_rearm() also in case probe fails after reset() has been called. reset_control_rearm() keeps use of triggered_count sane in the reset framework, use of reset_control_reset() on shared reset line should be balanced with reset_control_rearm(). Signed-off-by: Amjad Ouled-Ameur Reported-by: Jerome Brunet Link: https://lore.kernel.org/r/20211112162827.128319-3-aouledameur@baylibre.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/usb/dwc3/dwc3-meson-g12a.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-meson-g12a.c b/drivers/usb/dwc3/dwc3-meson-g12a.c index d0f9b7c296b0d..bd814df3bf8b8 100644 --- a/drivers/usb/dwc3/dwc3-meson-g12a.c +++ b/drivers/usb/dwc3/dwc3-meson-g12a.c @@ -755,16 +755,16 @@ static int dwc3_meson_g12a_probe(struct platform_device *pdev) ret = dwc3_meson_g12a_get_phys(priv); if (ret) - goto err_disable_clks; + goto err_rearm; ret = priv->drvdata->setup_regmaps(priv, base); if (ret) - goto err_disable_clks; + goto err_rearm; if (priv->vbus) { ret = regulator_enable(priv->vbus); if (ret) - goto err_disable_clks; + goto err_rearm; } /* Get dr_mode */ @@ -825,6 +825,9 @@ static int dwc3_meson_g12a_probe(struct platform_device *pdev) if (priv->vbus) regulator_disable(priv->vbus); +err_rearm: + reset_control_rearm(priv->reset); + err_disable_clks: clk_bulk_disable_unprepare(priv->drvdata->num_clks, priv->drvdata->clks); @@ -852,6 +855,8 @@ static int dwc3_meson_g12a_remove(struct platform_device *pdev) pm_runtime_put_noidle(dev); pm_runtime_set_suspended(dev); + reset_control_rearm(priv->reset); + clk_bulk_disable_unprepare(priv->drvdata->num_clks, priv->drvdata->clks); @@ -892,7 +897,7 @@ static int __maybe_unused dwc3_meson_g12a_suspend(struct device *dev) phy_exit(priv->phys[i]); } - reset_control_assert(priv->reset); + reset_control_rearm(priv->reset); return 0; } @@ -902,7 +907,9 @@ static int __maybe_unused dwc3_meson_g12a_resume(struct device *dev) struct dwc3_meson_g12a *priv = dev_get_drvdata(dev); int i, ret; - reset_control_deassert(priv->reset); + ret = reset_control_reset(priv->reset); + if (ret) + return ret; ret = priv->drvdata->usb_init(priv); if (ret) -- 2.34.1 _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic From mboxrd@z Thu Jan 1 00:00:00 1970 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 B9874C43217 for ; Tue, 18 Jan 2022 02:23:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245032AbiARCXg (ORCPT ); Mon, 17 Jan 2022 21:23:36 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56480 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244566AbiARCVa (ORCPT ); Mon, 17 Jan 2022 21:21:30 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 88B96C06175C; Mon, 17 Jan 2022 18:21:29 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 4DCF8B81236; Tue, 18 Jan 2022 02:21:28 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C9749C36AE3; Tue, 18 Jan 2022 02:21:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1642472487; bh=KuDx/9P+Wps9AtzStWZ2hI77/d8sYbhn6+5ghzmQjp0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UWKdolORwwfQVXdJfYNLLmeAVgZ7i1HAwEUO3EfuT1EnALSjd+Whw2cZv3uBv/XQy LnDCS2ai1HRjFaj2RPlI91aPMStiCH5j7Ipf9FKCpo/u/jjEeFqGpptxabBgPOpIjv HUCGwZ9V/Bl+ZvAJtbIVbOGEl1ruc3m94GheNvcgpXyZEBnXQgBCz/JIS/BYKM49X+ qx0xAxut7kNPs2Sdx/pyuUHGZvdBEYHAinD/onjL0KcVh4tooatsKWOIdvO8HjXmWM hbjOdN9Ke7Fto1h7uyxwyVznn0nJd6V2mlZHYNc0EjMdz4hUnxpKSt3NgXEe5JuiFD R9O/ysKyIbUZA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Amjad Ouled-Ameur , Jerome Brunet , Greg Kroah-Hartman , Sasha Levin , balbi@kernel.org, narmstrong@baylibre.com, khilman@baylibre.com, p.zabel@pengutronix.de, linux-usb@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org Subject: [PATCH AUTOSEL 5.16 029/217] usb: dwc3: meson-g12a: fix shared reset control use Date: Mon, 17 Jan 2022 21:16:32 -0500 Message-Id: <20220118021940.1942199-29-sashal@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220118021940.1942199-1-sashal@kernel.org> References: <20220118021940.1942199-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org From: Amjad Ouled-Ameur [ Upstream commit 4ce3b45704d5ef46fb4b28083c8aba6716fabf3b ] reset_control_(de)assert() calls are called on a shared reset line when reset_control_reset has been used. This is not allowed by the reset framework. Use reset_control_rearm() call in suspend() and remove() as a way to state that the resource is no longer used, hence the shared reset line may be triggered again by other devices. Use reset_control_rearm() also in case probe fails after reset() has been called. reset_control_rearm() keeps use of triggered_count sane in the reset framework, use of reset_control_reset() on shared reset line should be balanced with reset_control_rearm(). Signed-off-by: Amjad Ouled-Ameur Reported-by: Jerome Brunet Link: https://lore.kernel.org/r/20211112162827.128319-3-aouledameur@baylibre.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/usb/dwc3/dwc3-meson-g12a.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-meson-g12a.c b/drivers/usb/dwc3/dwc3-meson-g12a.c index d0f9b7c296b0d..bd814df3bf8b8 100644 --- a/drivers/usb/dwc3/dwc3-meson-g12a.c +++ b/drivers/usb/dwc3/dwc3-meson-g12a.c @@ -755,16 +755,16 @@ static int dwc3_meson_g12a_probe(struct platform_device *pdev) ret = dwc3_meson_g12a_get_phys(priv); if (ret) - goto err_disable_clks; + goto err_rearm; ret = priv->drvdata->setup_regmaps(priv, base); if (ret) - goto err_disable_clks; + goto err_rearm; if (priv->vbus) { ret = regulator_enable(priv->vbus); if (ret) - goto err_disable_clks; + goto err_rearm; } /* Get dr_mode */ @@ -825,6 +825,9 @@ static int dwc3_meson_g12a_probe(struct platform_device *pdev) if (priv->vbus) regulator_disable(priv->vbus); +err_rearm: + reset_control_rearm(priv->reset); + err_disable_clks: clk_bulk_disable_unprepare(priv->drvdata->num_clks, priv->drvdata->clks); @@ -852,6 +855,8 @@ static int dwc3_meson_g12a_remove(struct platform_device *pdev) pm_runtime_put_noidle(dev); pm_runtime_set_suspended(dev); + reset_control_rearm(priv->reset); + clk_bulk_disable_unprepare(priv->drvdata->num_clks, priv->drvdata->clks); @@ -892,7 +897,7 @@ static int __maybe_unused dwc3_meson_g12a_suspend(struct device *dev) phy_exit(priv->phys[i]); } - reset_control_assert(priv->reset); + reset_control_rearm(priv->reset); return 0; } @@ -902,7 +907,9 @@ static int __maybe_unused dwc3_meson_g12a_resume(struct device *dev) struct dwc3_meson_g12a *priv = dev_get_drvdata(dev); int i, ret; - reset_control_deassert(priv->reset); + ret = reset_control_reset(priv->reset); + if (ret) + return ret; ret = priv->drvdata->usb_init(priv); if (ret) -- 2.34.1 From mboxrd@z Thu Jan 1 00:00:00 1970 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 9A853C433EF for ; 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Tue, 18 Jan 2022 02:21:34 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1n9e7k-00Gsgp-7z; Tue, 18 Jan 2022 02:21:30 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id B62AE612DF; Tue, 18 Jan 2022 02:21:27 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C9749C36AE3; Tue, 18 Jan 2022 02:21:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1642472487; bh=KuDx/9P+Wps9AtzStWZ2hI77/d8sYbhn6+5ghzmQjp0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UWKdolORwwfQVXdJfYNLLmeAVgZ7i1HAwEUO3EfuT1EnALSjd+Whw2cZv3uBv/XQy LnDCS2ai1HRjFaj2RPlI91aPMStiCH5j7Ipf9FKCpo/u/jjEeFqGpptxabBgPOpIjv HUCGwZ9V/Bl+ZvAJtbIVbOGEl1ruc3m94GheNvcgpXyZEBnXQgBCz/JIS/BYKM49X+ qx0xAxut7kNPs2Sdx/pyuUHGZvdBEYHAinD/onjL0KcVh4tooatsKWOIdvO8HjXmWM hbjOdN9Ke7Fto1h7uyxwyVznn0nJd6V2mlZHYNc0EjMdz4hUnxpKSt3NgXEe5JuiFD R9O/ysKyIbUZA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Amjad Ouled-Ameur , Jerome Brunet , Greg Kroah-Hartman , Sasha Levin , balbi@kernel.org, narmstrong@baylibre.com, khilman@baylibre.com, p.zabel@pengutronix.de, linux-usb@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org Subject: [PATCH AUTOSEL 5.16 029/217] usb: dwc3: meson-g12a: fix shared reset control use Date: Mon, 17 Jan 2022 21:16:32 -0500 Message-Id: <20220118021940.1942199-29-sashal@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220118021940.1942199-1-sashal@kernel.org> References: <20220118021940.1942199-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220117_182128_391660_6E491FA8 X-CRM114-Status: GOOD ( 14.92 ) 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Amjad Ouled-Ameur [ Upstream commit 4ce3b45704d5ef46fb4b28083c8aba6716fabf3b ] reset_control_(de)assert() calls are called on a shared reset line when reset_control_reset has been used. This is not allowed by the reset framework. Use reset_control_rearm() call in suspend() and remove() as a way to state that the resource is no longer used, hence the shared reset line may be triggered again by other devices. Use reset_control_rearm() also in case probe fails after reset() has been called. reset_control_rearm() keeps use of triggered_count sane in the reset framework, use of reset_control_reset() on shared reset line should be balanced with reset_control_rearm(). Signed-off-by: Amjad Ouled-Ameur Reported-by: Jerome Brunet Link: https://lore.kernel.org/r/20211112162827.128319-3-aouledameur@baylibre.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/usb/dwc3/dwc3-meson-g12a.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-meson-g12a.c b/drivers/usb/dwc3/dwc3-meson-g12a.c index d0f9b7c296b0d..bd814df3bf8b8 100644 --- a/drivers/usb/dwc3/dwc3-meson-g12a.c +++ b/drivers/usb/dwc3/dwc3-meson-g12a.c @@ -755,16 +755,16 @@ static int dwc3_meson_g12a_probe(struct platform_device *pdev) ret = dwc3_meson_g12a_get_phys(priv); if (ret) - goto err_disable_clks; + goto err_rearm; ret = priv->drvdata->setup_regmaps(priv, base); if (ret) - goto err_disable_clks; + goto err_rearm; if (priv->vbus) { ret = regulator_enable(priv->vbus); if (ret) - goto err_disable_clks; + goto err_rearm; } /* Get dr_mode */ @@ -825,6 +825,9 @@ static int dwc3_meson_g12a_probe(struct platform_device *pdev) if (priv->vbus) regulator_disable(priv->vbus); +err_rearm: + reset_control_rearm(priv->reset); + err_disable_clks: clk_bulk_disable_unprepare(priv->drvdata->num_clks, priv->drvdata->clks); @@ -852,6 +855,8 @@ static int dwc3_meson_g12a_remove(struct platform_device *pdev) pm_runtime_put_noidle(dev); pm_runtime_set_suspended(dev); + reset_control_rearm(priv->reset); + clk_bulk_disable_unprepare(priv->drvdata->num_clks, priv->drvdata->clks); @@ -892,7 +897,7 @@ static int __maybe_unused dwc3_meson_g12a_suspend(struct device *dev) phy_exit(priv->phys[i]); } - reset_control_assert(priv->reset); + reset_control_rearm(priv->reset); return 0; } @@ -902,7 +907,9 @@ static int __maybe_unused dwc3_meson_g12a_resume(struct device *dev) struct dwc3_meson_g12a *priv = dev_get_drvdata(dev); int i, ret; - reset_control_deassert(priv->reset); + ret = reset_control_reset(priv->reset); + if (ret) + return ret; ret = priv->drvdata->usb_init(priv); if (ret) -- 2.34.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel