From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kishon Vijay Abraham I Subject: [PATCH v3 03/11] usb: dwc3-omap: use runtime API's to enable clocks Date: Fri, 25 Jan 2013 08:30:47 +0530 Message-ID: <1359082855-7404-4-git-send-email-kishon@ti.com> References: <1359082855-7404-1-git-send-email-kishon@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1359082855-7404-1-git-send-email-kishon@ti.com> Sender: linux-doc-owner@vger.kernel.org To: rob.herring@calxeda.com, rob@landley.net, balbi@ti.com, linux-usb@vger.kernel.org, linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, devicetree-discuss@lists.ozlabs.org Cc: grant.likely@secretlab.ca, gregkh@linuxfoundation.org, kishon@ti.com List-Id: devicetree@vger.kernel.org Before accessing any register, runtime API's should be invoked to enable the clocks. runtime API's are added here to prevent abort during register access. Signed-off-by: Kishon Vijay Abraham I --- drivers/usb/dwc3/dwc3-omap.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c index 78bb2f6..8094230 100644 --- a/drivers/usb/dwc3/dwc3-omap.c +++ b/drivers/usb/dwc3/dwc3-omap.c @@ -43,6 +43,7 @@ #include #include #include +#include #include #include #include @@ -336,6 +337,13 @@ static int dwc3_omap_probe(struct platform_device *pdev) omap->irq = irq; omap->base = base; + pm_runtime_enable(dev); + ret = pm_runtime_get_sync(dev); + if (ret < 0) { + dev_err(dev, "get_sync failed with err %d\n", ret); + return ret; + } + reg = dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS); utmi_mode = of_get_property(node, "utmi-mode", &size); @@ -416,6 +424,8 @@ static int dwc3_omap_remove(struct platform_device *pdev) platform_device_unregister(omap->usb2_phy); platform_device_unregister(omap->usb3_phy); + pm_runtime_put_sync(&pdev->dev); + pm_runtime_disable(&pdev->dev); device_for_each_child(&pdev->dev, NULL, dwc3_omap_remove_core); return 0; -- 1.7.9.5