From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kishon Vijay Abraham I Subject: [PATCH v3 3/7] usb: dwc3-omap: use runtime API's to enable clocks Date: Mon, 8 Oct 2012 14:53:52 +0530 Message-ID: <1349688236-22814-4-git-send-email-kishon@ti.com> References: <1349688236-22814-1-git-send-email-kishon@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1349688236-22814-1-git-send-email-kishon@ti.com> Sender: linux-kernel-owner@vger.kernel.org To: sshtylyov@mvista.com, grant.likely@secretlab.ca, rob.herring@calxeda.com, rob@landley.net, balbi@ti.com, gregkh@linuxfoundation.org, kishon@ti.com, devicetree-discuss@lists.ozlabs.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, linux-omap@vger.kernel.org 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 cb4037a..850a0cf 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 @@ -272,6 +273,13 @@ static int __devinit 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); @@ -348,6 +356,8 @@ static int __devinit dwc3_omap_probe(struct platform_device *pdev) static int __devexit dwc3_omap_remove(struct platform_device *pdev) { + 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