From patchwork Tue Aug 2 15:13:57 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johan Hovold X-Patchwork-Id: 12934756 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 8CB2FC3F6B0 for ; Tue, 2 Aug 2022 15:14:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237349AbiHBPOa (ORCPT ); Tue, 2 Aug 2022 11:14:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53272 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236092AbiHBPOU (ORCPT ); Tue, 2 Aug 2022 11:14:20 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C45361836B; Tue, 2 Aug 2022 08:14:18 -0700 (PDT) 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 6FFAFB81F45; Tue, 2 Aug 2022 15:14:17 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1A2D6C43143; Tue, 2 Aug 2022 15:14:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1659453256; bh=yf1XNImaMaEMbAVVDfs/2GhFLLQGWcQ2dZe8Q8W1ecA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LyoYXvT+cARYDP/AyLTXHpoIPnOD2SQf1ZyIzPYbK0e0qIrehTdFWHFfrHMg6P7kR DFFiWFrflVaUpzER2mGO9dPKgcZaSWIqaci8WsaS28W2BD87h/UMV9uAtFKJ9nGz10 h+sOJlLuBxQHAGGSVjhLp4jOPsiGtPP+REIzRyiKNoa2MVhefkRUtyZr3qXIYAFyJo JH1xpAs3yUiK1e6pGyHplOeEtw5xZLZw1F7oyQWiGAfPKAh1+0Gi43LBzxwiYfeZYb lqCqAbXztDwA1qW/qsaRtR/Z77P5rvl+tDmEkyLFg7gc5ze4bcE7LtwYJmWlW8RxAX bCK9DxTAtoJ+g== Received: from johan by xi.lan with local (Exim 4.94.2) (envelope-from ) id 1oItbM-0000TU-2x; Tue, 02 Aug 2022 17:14:32 +0200 From: Johan Hovold To: Greg Kroah-Hartman , Felipe Balbi Cc: Rob Herring , Krzysztof Kozlowski , Andy Gross , Bjorn Andersson , Manivannan Sadhasivam , Konrad Dybcio , Krishna Kurapati , Stephen Boyd , Doug Anderson , "Matthias Kaehlcke" , Pavankumar Kondeti , quic_ppratap@quicinc.com, quic_vpulyala@quicinc.com, linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold , stable@vger.kernel.org Subject: [PATCH 1/8] usb: dwc3: fix PHY disable sequence Date: Tue, 2 Aug 2022 17:13:57 +0200 Message-Id: <20220802151404.1797-2-johan+linaro@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220802151404.1797-1-johan+linaro@kernel.org> References: <20220802151404.1797-1-johan+linaro@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Generic PHYs must be powered-off before they can be tore down. Similarly, suspending legacy PHYs after having powered them off makes no sense. Fix the dwc3_core_exit() (e.g. called during suspend) and open-coded dwc3_probe() error-path sequences that got this wrong. Note that this makes dwc3_core_exit() match the dwc3_core_init() error path with respect to powering off the PHYs. Fixes: 03c1fd622f72 ("usb: dwc3: core: add phy cleanup for probe error handling") Fixes: c499ff71ff2a ("usb: dwc3: core: re-factor init and exit paths") Cc: stable@vger.kernel.org # 4.8 Signed-off-by: Johan Hovold Reviewed-by: Andrew Halaney Reviewed-by: Matthias Kaehlcke --- drivers/usb/dwc3/core.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index c5c238ab3083..16d1f328775f 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -833,15 +833,16 @@ static void dwc3_core_exit(struct dwc3 *dwc) { dwc3_event_buffers_cleanup(dwc); + usb_phy_set_suspend(dwc->usb2_phy, 1); + usb_phy_set_suspend(dwc->usb3_phy, 1); + phy_power_off(dwc->usb2_generic_phy); + phy_power_off(dwc->usb3_generic_phy); + usb_phy_shutdown(dwc->usb2_phy); usb_phy_shutdown(dwc->usb3_phy); phy_exit(dwc->usb2_generic_phy); phy_exit(dwc->usb3_generic_phy); - usb_phy_set_suspend(dwc->usb2_phy, 1); - usb_phy_set_suspend(dwc->usb3_phy, 1); - phy_power_off(dwc->usb2_generic_phy); - phy_power_off(dwc->usb3_generic_phy); dwc3_clk_disable(dwc); reset_control_assert(dwc->reset); } @@ -1879,16 +1880,16 @@ static int dwc3_probe(struct platform_device *pdev) dwc3_debugfs_exit(dwc); dwc3_event_buffers_cleanup(dwc); - usb_phy_shutdown(dwc->usb2_phy); - usb_phy_shutdown(dwc->usb3_phy); - phy_exit(dwc->usb2_generic_phy); - phy_exit(dwc->usb3_generic_phy); - usb_phy_set_suspend(dwc->usb2_phy, 1); usb_phy_set_suspend(dwc->usb3_phy, 1); phy_power_off(dwc->usb2_generic_phy); phy_power_off(dwc->usb3_generic_phy); + usb_phy_shutdown(dwc->usb2_phy); + usb_phy_shutdown(dwc->usb3_phy); + phy_exit(dwc->usb2_generic_phy); + phy_exit(dwc->usb3_generic_phy); + dwc3_ulpi_exit(dwc); err4: From patchwork Tue Aug 2 15:13:58 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johan Hovold X-Patchwork-Id: 12934755 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 A365CC00140 for ; Tue, 2 Aug 2022 15:14:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237135AbiHBPOW (ORCPT ); Tue, 2 Aug 2022 11:14:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53268 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236314AbiHBPOU (ORCPT ); Tue, 2 Aug 2022 11:14:20 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A6FB017E09; Tue, 2 Aug 2022 08:14:17 -0700 (PDT) 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 326B260304; Tue, 2 Aug 2022 15:14:17 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1E712C43142; Tue, 2 Aug 2022 15:14:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1659453256; bh=Oc10iKL8iP3YYDdhgl1EaSJB79hlUqWQiGPijpdOAlg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IQMOp4ILxF80F4WoPemsfIMbZ6Iz7BuR2KIvzqR5hVXSA6SbgX+wHhJvf1qg53MoA qmH7LatfiN5vrLP8CQgimUFEfy12VeFj7+3Xy91UqstCyq6FheaL34QcgZwe3JOE2I 4OSHvvIgv44fzTvnKG+Go1ZUylGZFF83IodMpPozuw22Qm1sCRXHsdknUFrzirnRGj A+YteNZQOdOPHwba/3RIHOcUCfzYTxCPIgbV/VWfrsjCK4c5ulYisjpMcGOUfT2IZD oCQlN23usfjVX1sRvBGh9gefeqpZA1DW5gSs9MZV4a05dVzxahdyTliZyLE96o1ANJ NxSegAiccZfTA== Received: from johan by xi.lan with local (Exim 4.94.2) (envelope-from ) id 1oItbM-0000TW-5k; Tue, 02 Aug 2022 17:14:32 +0200 From: Johan Hovold To: Greg Kroah-Hartman , Felipe Balbi Cc: Rob Herring , Krzysztof Kozlowski , Andy Gross , Bjorn Andersson , Manivannan Sadhasivam , Konrad Dybcio , Krishna Kurapati , Stephen Boyd , Doug Anderson , "Matthias Kaehlcke" , Pavankumar Kondeti , quic_ppratap@quicinc.com, quic_vpulyala@quicinc.com, linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold Subject: [PATCH 2/8] Revert "usb: dwc3: qcom: Keep power domain on to retain controller status" Date: Tue, 2 Aug 2022 17:13:58 +0200 Message-Id: <20220802151404.1797-3-johan+linaro@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220802151404.1797-1-johan+linaro@kernel.org> References: <20220802151404.1797-1-johan+linaro@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org This reverts commit d9be8d5c5b032e5383ff5c404ff4155e9c705429. Generic power-domain flags must be set before the power-domain is initialised and must specifically not be modified by drivers for devices that happen to be in the domain. To make sure that USB power-domains are left enabled during system suspend when a device in the domain is in the wakeup path, the GENPD_FLAG_ACTIVE_WAKEUP flag should instead be set for the domain unconditionally when it is registered. Note that this also avoids keeping power-domains on during suspend when wakeup has not been enabled (e.g. through sysfs). For the runtime PM case, making sure that the PHYs are not suspended and that they are in the same domain as the controller prevents the domain from being suspended. If there are cases where this is not possible or desirable, the genpd implementation may need to be extended. Fixes: d9be8d5c5b03 ("usb: dwc3: qcom: Keep power domain on to retain controller status") Signed-off-by: Johan Hovold --- drivers/usb/dwc3/dwc3-qcom.c | 28 +++++++--------------------- 1 file changed, 7 insertions(+), 21 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c index c5e482f53e9d..be2e3dd36440 100644 --- a/drivers/usb/dwc3/dwc3-qcom.c +++ b/drivers/usb/dwc3/dwc3-qcom.c @@ -17,7 +17,6 @@ #include #include #include -#include #include #include #include @@ -757,13 +756,12 @@ dwc3_qcom_create_urs_usb_platdev(struct device *dev) static int dwc3_qcom_probe(struct platform_device *pdev) { - struct device_node *np = pdev->dev.of_node; - struct device *dev = &pdev->dev; - struct dwc3_qcom *qcom; - struct resource *res, *parent_res = NULL; - int ret, i; - bool ignore_pipe_clk; - struct generic_pm_domain *genpd; + struct device_node *np = pdev->dev.of_node; + struct device *dev = &pdev->dev; + struct dwc3_qcom *qcom; + struct resource *res, *parent_res = NULL; + int ret, i; + bool ignore_pipe_clk; qcom = devm_kzalloc(&pdev->dev, sizeof(*qcom), GFP_KERNEL); if (!qcom) @@ -772,8 +770,6 @@ static int dwc3_qcom_probe(struct platform_device *pdev) platform_set_drvdata(pdev, qcom); qcom->dev = &pdev->dev; - genpd = pd_to_genpd(qcom->dev->pm_domain); - if (has_acpi_companion(dev)) { qcom->acpi_pdata = acpi_device_get_match_data(dev); if (!qcom->acpi_pdata) { @@ -881,17 +877,7 @@ static int dwc3_qcom_probe(struct platform_device *pdev) if (ret) goto interconnect_exit; - if (device_can_wakeup(&qcom->dwc3->dev)) { - /* - * Setting GENPD_FLAG_ALWAYS_ON flag takes care of keeping - * genpd on in both runtime suspend and system suspend cases. - */ - genpd->flags |= GENPD_FLAG_ALWAYS_ON; - device_init_wakeup(&pdev->dev, true); - } else { - genpd->flags |= GENPD_FLAG_RPM_ALWAYS_ON; - } - + device_init_wakeup(&pdev->dev, 1); qcom->is_suspended = false; pm_runtime_set_active(dev); pm_runtime_enable(dev); From patchwork Tue Aug 2 15:13:59 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johan Hovold X-Patchwork-Id: 12934751 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 11EF4C25B0D for ; Tue, 2 Aug 2022 15:14:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237091AbiHBPOW (ORCPT ); Tue, 2 Aug 2022 11:14:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53270 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236168AbiHBPOU (ORCPT ); Tue, 2 Aug 2022 11:14:20 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D0FC418373; Tue, 2 Aug 2022 08:14:18 -0700 (PDT) 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 7DBF1B81F47; Tue, 2 Aug 2022 15:14:17 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0AB9AC433D6; Tue, 2 Aug 2022 15:14:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1659453256; bh=j2nJx8as9UlVhaaVa9FxipRqThk43lXnnVB/YIARXa4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pbvJQq8pE6Ks5bYHErzelIKTO/zg9HHbBjyIxtk/eXSDKrLiAdSND7WzKypwWeI1G HQ5uIzSC7gq7gEYaewaIqKd9K/1xAtioRdg4f36aYJ1Ok36/krOUToQnTV64k18Wup vLSDKDFUGoHf1A1A7yr6Q1vnjjG+17jqWpt/ipCEhNHC8wUIQ0oVRfYSiAopFYp75o mJpx5DtgibmUZLHzxK//RdcDYevTzrV3jDhI++MVYc8eiO0RZLLQy3bTxUNUR24kJX 6KBre9MVd47+kyLUQZ+wxsM5gtkKoxE9x6JliFUWTlqYxtLkOcq1hrENCNKbL5idg5 dQqIq7MhJkw/g== Received: from johan by xi.lan with local (Exim 4.94.2) (envelope-from ) id 1oItbM-0000TY-8k; Tue, 02 Aug 2022 17:14:32 +0200 From: Johan Hovold To: Greg Kroah-Hartman , Felipe Balbi Cc: Rob Herring , Krzysztof Kozlowski , Andy Gross , Bjorn Andersson , Manivannan Sadhasivam , Konrad Dybcio , Krishna Kurapati , Stephen Boyd , Doug Anderson , "Matthias Kaehlcke" , Pavankumar Kondeti , quic_ppratap@quicinc.com, quic_vpulyala@quicinc.com, linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold Subject: [PATCH 3/8] usb: dwc3: qcom: fix broken non-host-mode suspend Date: Tue, 2 Aug 2022 17:13:59 +0200 Message-Id: <20220802151404.1797-4-johan+linaro@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220802151404.1797-1-johan+linaro@kernel.org> References: <20220802151404.1797-1-johan+linaro@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org A recent commit implementing wakeup support in host mode instead broke suspend for peripheral and OTG mode. The hack that was added in the suspend path to determine the speed of any device connected to the USB2 bus not only accesses internal driver data for a child device, but also dereferences a NULL pointer when not in host mode and there is no HCD. As the controller can switch role at any time when in OTG mode, there's no quick fix to this, and since reverting would leave us with broken suspend in host-mode (wakeup triggers immediately), keep the hack for now and only fix the NULL-pointer dereference. Fixes: 6895ea55c385 ("usb: dwc3: qcom: Configure wakeup interrupts during suspend") Signed-off-by: Johan Hovold --- drivers/usb/dwc3/dwc3-qcom.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c index be2e3dd36440..b75ff40f75a2 100644 --- a/drivers/usb/dwc3/dwc3-qcom.c +++ b/drivers/usb/dwc3/dwc3-qcom.c @@ -301,8 +301,17 @@ static void dwc3_qcom_interconnect_exit(struct dwc3_qcom *qcom) static enum usb_device_speed dwc3_qcom_read_usb2_speed(struct dwc3_qcom *qcom) { struct dwc3 *dwc = platform_get_drvdata(qcom->dwc3); - struct usb_hcd *hcd = platform_get_drvdata(dwc->xhci); struct usb_device *udev; + struct usb_hcd *hcd; + + if (qcom->mode != USB_DR_MODE_HOST) + return USB_SPEED_UNKNOWN; + + /* + * FIXME: Fix this nasty layering violation which currently only + * "works" in host mode. + */ + hcd = platform_get_drvdata(dwc->xhci); /* * It is possible to query the speed of all children of From patchwork Tue Aug 2 15:14:00 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johan Hovold X-Patchwork-Id: 12934753 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 66E53C282E7 for ; Tue, 2 Aug 2022 15:14:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237144AbiHBPOX (ORCPT ); Tue, 2 Aug 2022 11:14:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53284 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236831AbiHBPOU (ORCPT ); Tue, 2 Aug 2022 11:14:20 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 530C6186E2; Tue, 2 Aug 2022 08:14:19 -0700 (PDT) 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 EF98EB81F40; Tue, 2 Aug 2022 15:14:17 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 23C80C43145; Tue, 2 Aug 2022 15:14:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1659453256; bh=L27CX05HZf4XykjyTAIE7PhecrMdrN1NZ0CnEJimvZg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=L+JX0WvqxmaSq2y24PC/MU2F2OTevTS/l3EzJOTjypDjnJVgDWtkK8cQEksYW0YxU 2zPOej8GeD59ruH7sh+QezJZL2IPMJWdEHyYbIgtOG3ldtn2oB9n5bFCg0gRmAWkro QZm3IlUOf07sSMvVFHK9bhMqztgRhrxsfh0Std93MOvNGnhBICFQkr42B8FOtKtrL/ W4r2AsRJF3ytk8mQdc8+VrYdkw+kzdpDfDyA7u5MPRe4oNXqPxFwjWgQ0kk555VyX4 oqNACTcs6qG7v/0VUnwrR+3TmLegCOpNheW9c2HJuSh1GrCuJIMauM5QLxW5FaTas2 wi2TFLRBNuYag== Received: from johan by xi.lan with local (Exim 4.94.2) (envelope-from ) id 1oItbM-0000Ta-BJ; Tue, 02 Aug 2022 17:14:32 +0200 From: Johan Hovold To: Greg Kroah-Hartman , Felipe Balbi Cc: Rob Herring , Krzysztof Kozlowski , Andy Gross , Bjorn Andersson , Manivannan Sadhasivam , Konrad Dybcio , Krishna Kurapati , Stephen Boyd , Doug Anderson , "Matthias Kaehlcke" , Pavankumar Kondeti , quic_ppratap@quicinc.com, quic_vpulyala@quicinc.com, linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold Subject: [PATCH 4/8] usb: dwc3: qcom: fix runtime PM wakeup Date: Tue, 2 Aug 2022 17:14:00 +0200 Message-Id: <20220802151404.1797-5-johan+linaro@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220802151404.1797-1-johan+linaro@kernel.org> References: <20220802151404.1797-1-johan+linaro@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org A device must enable wakeups during runtime suspend regardless of whether it is capable and allowed to wake the system up from system suspend. Fixes: 2664deb09306 ("usb: dwc3: qcom: Honor wakeup enabled/disabled state") Signed-off-by: Johan Hovold --- drivers/usb/dwc3/dwc3-qcom.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c index b75ff40f75a2..57d3a0e6f280 100644 --- a/drivers/usb/dwc3/dwc3-qcom.c +++ b/drivers/usb/dwc3/dwc3-qcom.c @@ -395,7 +395,7 @@ static void dwc3_qcom_enable_interrupts(struct dwc3_qcom *qcom) dwc3_qcom_enable_wakeup_irq(qcom->ss_phy_irq, 0); } -static int dwc3_qcom_suspend(struct dwc3_qcom *qcom) +static int dwc3_qcom_suspend(struct dwc3_qcom *qcom, bool wakeup) { u32 val; int i, ret; @@ -414,7 +414,7 @@ static int dwc3_qcom_suspend(struct dwc3_qcom *qcom) if (ret) dev_warn(qcom->dev, "failed to disable interconnect: %d\n", ret); - if (device_may_wakeup(qcom->dev)) { + if (wakeup) { qcom->usb2_speed = dwc3_qcom_read_usb2_speed(qcom); dwc3_qcom_enable_interrupts(qcom); } @@ -424,7 +424,7 @@ static int dwc3_qcom_suspend(struct dwc3_qcom *qcom) return 0; } -static int dwc3_qcom_resume(struct dwc3_qcom *qcom) +static int dwc3_qcom_resume(struct dwc3_qcom *qcom, bool wakeup) { int ret; int i; @@ -432,7 +432,7 @@ static int dwc3_qcom_resume(struct dwc3_qcom *qcom) if (!qcom->is_suspended) return 0; - if (device_may_wakeup(qcom->dev)) + if (wakeup) dwc3_qcom_disable_interrupts(qcom); for (i = 0; i < qcom->num_clocks; i++) { @@ -939,9 +939,11 @@ static int dwc3_qcom_remove(struct platform_device *pdev) static int __maybe_unused dwc3_qcom_pm_suspend(struct device *dev) { struct dwc3_qcom *qcom = dev_get_drvdata(dev); + bool wakeup = device_may_wakeup(dev); int ret = 0; - ret = dwc3_qcom_suspend(qcom); + + ret = dwc3_qcom_suspend(qcom, wakeup); if (!ret) qcom->pm_suspended = true; @@ -951,9 +953,10 @@ static int __maybe_unused dwc3_qcom_pm_suspend(struct device *dev) static int __maybe_unused dwc3_qcom_pm_resume(struct device *dev) { struct dwc3_qcom *qcom = dev_get_drvdata(dev); + bool wakeup = device_may_wakeup(dev); int ret; - ret = dwc3_qcom_resume(qcom); + ret = dwc3_qcom_resume(qcom, wakeup); if (!ret) qcom->pm_suspended = false; @@ -964,14 +967,14 @@ static int __maybe_unused dwc3_qcom_runtime_suspend(struct device *dev) { struct dwc3_qcom *qcom = dev_get_drvdata(dev); - return dwc3_qcom_suspend(qcom); + return dwc3_qcom_suspend(qcom, true); } static int __maybe_unused dwc3_qcom_runtime_resume(struct device *dev) { struct dwc3_qcom *qcom = dev_get_drvdata(dev); - return dwc3_qcom_resume(qcom); + return dwc3_qcom_resume(qcom, true); } static const struct dev_pm_ops dwc3_qcom_dev_pm_ops = { From patchwork Tue Aug 2 15:14:01 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johan Hovold X-Patchwork-Id: 12934750 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 67C3EC19F2D for ; Tue, 2 Aug 2022 15:14:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236966AbiHBPOV (ORCPT ); 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b=WsMAAOaNz6It61LU7U0hj9yT6Jep64APeNUprgTkP4sBE6sH2iXKoQPlLgi5QPAgg L3YRjT8D6TKyYsPhlDTp9gCpMWOTt+rfAVfQVrKBTwU48lxPycwXcKYgeNf+t0bx5U //toRJ0q/OL8TBrgKBfc9EqA5WbE+3RyLsdicjdpBhv39LNIf1Ypx5Qloq8P6JjBUz qBghT+50Z+FNYALrbWWltqjTFSdnBH1bbgnLRseSbK337upz4HXhKHpou3VgnNK080 lnQnw01yN+sMp+ySHAVciPORh69LtKVjN0YF8S7HM+ourkQQYYBHYlngyKlzYxvlyh k/4OrrZfqN0hQ== Received: from johan by xi.lan with local (Exim 4.94.2) (envelope-from ) id 1oItbM-0000Tc-EW; Tue, 02 Aug 2022 17:14:32 +0200 From: Johan Hovold To: Greg Kroah-Hartman , Felipe Balbi Cc: Rob Herring , Krzysztof Kozlowski , Andy Gross , Bjorn Andersson , Manivannan Sadhasivam , Konrad Dybcio , Krishna Kurapati , Stephen Boyd , Doug Anderson , "Matthias Kaehlcke" , Pavankumar Kondeti , quic_ppratap@quicinc.com, quic_vpulyala@quicinc.com, linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold Subject: [PATCH 5/8] Revert "dt-bindings: usb: dwc3: Add wakeup-source property support" Date: Tue, 2 Aug 2022 17:14:01 +0200 Message-Id: <20220802151404.1797-6-johan+linaro@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220802151404.1797-1-johan+linaro@kernel.org> References: <20220802151404.1797-1-johan+linaro@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org This reverts commit 098c4d43b91a269e89f60331a26a3f3b914677ed. A devicetree binding should describe hardware capabilities and not be used to configure power-management policies (even if things are a bit blurry when it comes to "wakeup-source"). It should also not be used to work around Linux driver implementation issues such as how to coordinate the glue and core dwc3 drivers. For the Qualcomm dwc3 controllers, it is the glue device that manages the wakeup interrupts, which may or may not be able to wake the system up from system suspend. Also note that USB remote wakeup is always enabled during runtime suspend. Fixes: 098c4d43b91a ("dt-bindings: usb: dwc3: Add wakeup-source property support") Signed-off-by: Johan Hovold --- Documentation/devicetree/bindings/usb/snps,dwc3.yaml | 5 ----- 1 file changed, 5 deletions(-) diff --git a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml index 1779d08ba1c0..d41265ba8ce2 100644 --- a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml +++ b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml @@ -343,11 +343,6 @@ properties: This port is used with the 'usb-role-switch' property to connect the dwc3 to type C connector. - wakeup-source: - $ref: /schemas/types.yaml#/definitions/flag - description: - Enable USB remote wakeup. - unevaluatedProperties: false required: From patchwork Tue Aug 2 15:14:02 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johan Hovold X-Patchwork-Id: 12934748 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 3003DC3F6B0 for ; Tue, 2 Aug 2022 15:14:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236593AbiHBPOU (ORCPT ); Tue, 2 Aug 2022 11:14:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53254 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234780AbiHBPOT (ORCPT ); Tue, 2 Aug 2022 11:14:19 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3875C17581; Tue, 2 Aug 2022 08:14:17 -0700 (PDT) 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 BB23C60303; Tue, 2 Aug 2022 15:14:16 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 04ED5C433D7; Tue, 2 Aug 2022 15:14:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1659453256; bh=m0f8snPhaM+LiCifg3cCGC6xDAvaa10HN0gcVGJbM74=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=j7Za+fK2PUc7lGtw2mlIm40rw6IKQY2EH+JUBHOXhFtsHkedF6k9sc4Vq6bggDgT0 yqLDr2W6dhfdduqPF3RYj2+RxJsk9tVpuBzAviH+6iaa9Xaf+wIOZ+w1xizG1p8gGS bAasM/1+SX3v9WAoaHieWTt/WZxsAXAyAvhaSLJ4yw1PaysJQFSvsJYT025a0CkWHr l5fzfFhtFcYYDXdY3/SJ9c4szQaxhtiuNwlxgFsoZDRmq7j6Jak8S6vnhCf6gCeDwJ 9ylQFcxfi6qA9DS2++7Jbfm2AwK8g1MB5k5I5T2hU6cZl04zHCYoOvsXatLqIutjic FXGP1AfX81uPQ== Received: from johan by xi.lan with local (Exim 4.94.2) (envelope-from ) id 1oItbM-0000Te-H1; Tue, 02 Aug 2022 17:14:32 +0200 From: Johan Hovold To: Greg Kroah-Hartman , Felipe Balbi Cc: Rob Herring , Krzysztof Kozlowski , Andy Gross , Bjorn Andersson , Manivannan Sadhasivam , Konrad Dybcio , Krishna Kurapati , Stephen Boyd , Doug Anderson , "Matthias Kaehlcke" , Pavankumar Kondeti , quic_ppratap@quicinc.com, quic_vpulyala@quicinc.com, linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold Subject: [PATCH 6/8] dt-bindings: usb: qcom,dwc3: add wakeup-source property Date: Tue, 2 Aug 2022 17:14:02 +0200 Message-Id: <20220802151404.1797-7-johan+linaro@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220802151404.1797-1-johan+linaro@kernel.org> References: <20220802151404.1797-1-johan+linaro@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add a wakeup-source property to the binding to describe whether the wakeup interrupts can wake the system from suspend. Signed-off-by: Johan Hovold Acked-by: Rob Herring --- Documentation/devicetree/bindings/usb/qcom,dwc3.yaml | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml b/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml index fea3e7092ace..f6e118bf04f6 100644 --- a/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml +++ b/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml @@ -108,6 +108,8 @@ properties: HS/FS/LS modes are supported. type: boolean + wakeup-source: true + # Required child node: patternProperties: From patchwork Tue Aug 2 15:14:03 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johan Hovold X-Patchwork-Id: 12934749 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 D0A82C19F2C for ; Tue, 2 Aug 2022 15:14:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236844AbiHBPOU (ORCPT ); Tue, 2 Aug 2022 11:14:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53252 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235854AbiHBPOT (ORCPT ); Tue, 2 Aug 2022 11:14:19 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0757F15A3C; Tue, 2 Aug 2022 08:14:16 -0700 (PDT) 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 9870D60276; Tue, 2 Aug 2022 15:14:16 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E513FC433C1; Tue, 2 Aug 2022 15:14:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1659453256; bh=/vM1hbYvcMcG5rgPtJ9rOtDS7RIJfleSu0m9KM3s3sk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jlZ95wzALbGyX321n1ji2Ck4jAuKFTVOg4FpY+7WMSTTDsG3vh7QBKUWvDaRCt5Rr qdRL7TUySimjCFz+6DzBFSKgIXvNKptyuLW7BSaCB82vskAPh8MUeZxFoL4jqZ1vi3 SD+QT4kDcUy2tUxbxSaqzV6xXo7PAW3b+UHcnHZUqq4kI6ykED3jWtbEwZqL2xWSad Ky/kmHQR/QGPHQp4TA3Wg6sOJMDapfU6Kfe5YV0rclfSh+sbaxWY+bm+SjZspsxU67 soX5Yy5Vlr0N++u82JsxDQ5WekzmPNzPZmxQQmyYvSvNz8Qzybk+0xpVbQZFw1ytD+ DKO6duxbQys7A== Received: from johan by xi.lan with local (Exim 4.94.2) (envelope-from ) id 1oItbM-0000Tg-JZ; Tue, 02 Aug 2022 17:14:32 +0200 From: Johan Hovold To: Greg Kroah-Hartman , Felipe Balbi Cc: Rob Herring , Krzysztof Kozlowski , Andy Gross , Bjorn Andersson , Manivannan Sadhasivam , Konrad Dybcio , Krishna Kurapati , Stephen Boyd , Doug Anderson , "Matthias Kaehlcke" , Pavankumar Kondeti , quic_ppratap@quicinc.com, quic_vpulyala@quicinc.com, linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold Subject: [PATCH 7/8] usb: dwc3: qcom: fix wakeup implementation Date: Tue, 2 Aug 2022 17:14:03 +0200 Message-Id: <20220802151404.1797-8-johan+linaro@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220802151404.1797-1-johan+linaro@kernel.org> References: <20220802151404.1797-1-johan+linaro@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org It is the Qualcomm glue wakeup interrupts that may be able to wake the system from suspend and this can now be described in the devicetree. Move the wakeup-source property handling over from the core driver and instead propagate the capability setting to the core device during probe. This is needed as there is currently no way for the core driver to query the wakeup setting of the glue device, but it is the core driver that manages the PHY power state during suspend. Also don't leave the PHYs enabled when system wakeup has been disabled through sysfs. Fixes: 649f5c842ba3 ("usb: dwc3: core: Host wake up support from system suspend") Signed-off-by: Johan Hovold --- drivers/usb/dwc3/core.c | 5 ++--- drivers/usb/dwc3/dwc3-qcom.c | 6 +++++- 2 files changed, 7 insertions(+), 4 deletions(-) diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 16d1f328775f..8c8e32651473 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -1822,7 +1822,6 @@ static int dwc3_probe(struct platform_device *pdev) platform_set_drvdata(pdev, dwc); dwc3_cache_hwparams(dwc); - device_init_wakeup(&pdev->dev, of_property_read_bool(dev->of_node, "wakeup-source")); spin_lock_init(&dwc->lock); mutex_init(&dwc->mutex); @@ -1984,7 +1983,7 @@ static int dwc3_suspend_common(struct dwc3 *dwc, pm_message_t msg) dwc3_core_exit(dwc); break; case DWC3_GCTL_PRTCAP_HOST: - if (!PMSG_IS_AUTO(msg) && !device_can_wakeup(dwc->dev)) { + if (!PMSG_IS_AUTO(msg) && !device_may_wakeup(dwc->dev)) { dwc3_core_exit(dwc); break; } @@ -2045,7 +2044,7 @@ static int dwc3_resume_common(struct dwc3 *dwc, pm_message_t msg) spin_unlock_irqrestore(&dwc->lock, flags); break; case DWC3_GCTL_PRTCAP_HOST: - if (!PMSG_IS_AUTO(msg) && !device_can_wakeup(dwc->dev)) { + if (!PMSG_IS_AUTO(msg) && !device_may_wakeup(dwc->dev)) { ret = dwc3_core_init_for_resume(dwc); if (ret) return ret; diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c index 57d3a0e6f280..1bd2818b4daa 100644 --- a/drivers/usb/dwc3/dwc3-qcom.c +++ b/drivers/usb/dwc3/dwc3-qcom.c @@ -771,6 +771,7 @@ static int dwc3_qcom_probe(struct platform_device *pdev) struct resource *res, *parent_res = NULL; int ret, i; bool ignore_pipe_clk; + bool wakeup_source; qcom = devm_kzalloc(&pdev->dev, sizeof(*qcom), GFP_KERNEL); if (!qcom) @@ -886,7 +887,10 @@ static int dwc3_qcom_probe(struct platform_device *pdev) if (ret) goto interconnect_exit; - device_init_wakeup(&pdev->dev, 1); + wakeup_source = of_property_read_bool(dev->of_node, "wakeup-source"); + device_init_wakeup(&pdev->dev, wakeup_source); + device_init_wakeup(&qcom->dwc3->dev, wakeup_source); + qcom->is_suspended = false; pm_runtime_set_active(dev); pm_runtime_enable(dev); From patchwork Tue Aug 2 15:14:04 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johan Hovold X-Patchwork-Id: 12934752 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 78FAAC19F28 for ; Tue, 2 Aug 2022 15:14:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237238AbiHBPOY (ORCPT ); Tue, 2 Aug 2022 11:14:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53282 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236698AbiHBPOU (ORCPT ); Tue, 2 Aug 2022 11:14:20 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7062D167CA; Tue, 2 Aug 2022 08:14:19 -0700 (PDT) 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 1D823B81F3A; Tue, 2 Aug 2022 15:14:18 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3AE7DC43151; Tue, 2 Aug 2022 15:14:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1659453256; bh=HDXSUJAM6KP/jceAZJSA5f6hHQ5LwdeRI3r8X6y5ils=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qUreBEosfSUZFnnsF46nBBB1G1aIvl2/nh2ElYeeYb6ttZVzKyuOY8xvCGlV/ncQB jkFdPCt23Lem9bsE8iNEHD96FPyJPZ6kERpW0ft/l1+F74wr4BZ/nnQzngibu8GZzM vDU9tM4bSm5bad1YFVFZEVoQIHTbISSyI2BG7fdPY/bxSraWQ+Xnlo/fdHDbgbzPMv bDCpnPUR4XoTtQ+wGb3lgCbsCpcX6Lgaaq/tJsakdW3VyOWpIeK+27kq0cfAjAqe7T vHFwsx1kstJh7LskeHAqAOHggaF5liARMTogPtKsuzQKfDBI1pr/i1TqYxfCBNQCm6 twIDMAHz4yrHA== Received: from johan by xi.lan with local (Exim 4.94.2) (envelope-from ) id 1oItbM-0000Ti-M9; Tue, 02 Aug 2022 17:14:32 +0200 From: Johan Hovold To: Greg Kroah-Hartman , Felipe Balbi Cc: Rob Herring , Krzysztof Kozlowski , Andy Gross , Bjorn Andersson , Manivannan Sadhasivam , Konrad Dybcio , Krishna Kurapati , Stephen Boyd , Doug Anderson , "Matthias Kaehlcke" , Pavankumar Kondeti , quic_ppratap@quicinc.com, quic_vpulyala@quicinc.com, linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold Subject: [PATCH 8/8] usb: dwc3: qcom: clean up suspend callbacks Date: Tue, 2 Aug 2022 17:14:04 +0200 Message-Id: <20220802151404.1797-9-johan+linaro@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220802151404.1797-1-johan+linaro@kernel.org> References: <20220802151404.1797-1-johan+linaro@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Clean up the suspend callbacks by separating the error and success paths to improve readability. Also drop a related redundant initialisation. Signed-off-by: Johan Hovold --- drivers/usb/dwc3/dwc3-qcom.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c index 1bd2818b4daa..01e8c2fc6914 100644 --- a/drivers/usb/dwc3/dwc3-qcom.c +++ b/drivers/usb/dwc3/dwc3-qcom.c @@ -944,14 +944,15 @@ static int __maybe_unused dwc3_qcom_pm_suspend(struct device *dev) { struct dwc3_qcom *qcom = dev_get_drvdata(dev); bool wakeup = device_may_wakeup(dev); - int ret = 0; - + int ret; ret = dwc3_qcom_suspend(qcom, wakeup); - if (!ret) - qcom->pm_suspended = true; + if (ret) + return ret; - return ret; + qcom->pm_suspended = true; + + return 0; } static int __maybe_unused dwc3_qcom_pm_resume(struct device *dev) @@ -961,10 +962,12 @@ static int __maybe_unused dwc3_qcom_pm_resume(struct device *dev) int ret; ret = dwc3_qcom_resume(qcom, wakeup); - if (!ret) - qcom->pm_suspended = false; + if (ret) + return ret; - return ret; + qcom->pm_suspended = false; + + return 0; } static int __maybe_unused dwc3_qcom_runtime_suspend(struct device *dev)