On 18/05/17 01:59, Tony Lindgren wrote: > This is needed in preparation of adding support for omap3 and > later OHCI. The runtime PM will only do something on platforms > that implement it. > > Cc: [email protected] > Cc: Hans de Goede <[email protected]> > Cc: Rob Herring <[email protected]> > Cc: Roger Quadros <[email protected]> > Cc: Yoshihiro Shimoda <[email protected]> > Signed-off-by: Tony Lindgren <[email protected]>
Acked-by: Roger Quadros <[email protected]> > --- > drivers/usb/host/ohci-platform.c | 11 +++++++++++ > 1 file changed, 11 insertions(+) > > diff --git a/drivers/usb/host/ohci-platform.c > b/drivers/usb/host/ohci-platform.c > --- a/drivers/usb/host/ohci-platform.c > +++ b/drivers/usb/host/ohci-platform.c > @@ -24,6 +24,7 @@ > #include <linux/err.h> > #include <linux/phy/phy.h> > #include <linux/platform_device.h> > +#include <linux/pm_runtime.h> > #include <linux/reset.h> > #include <linux/usb/ohci_pdriver.h> > #include <linux/usb.h> > @@ -51,6 +52,10 @@ static int ohci_platform_power_on(struct platform_device > *dev) > struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd); > int clk, ret, phy_num; > > + ret = pm_runtime_get_sync(&dev->dev); > + if (ret < 0) > + return ret; > + > for (clk = 0; clk < OHCI_MAX_CLKS && priv->clks[clk]; clk++) { > ret = clk_prepare_enable(priv->clks[clk]); > if (ret) > @@ -96,6 +101,8 @@ static void ohci_platform_power_off(struct platform_device > *dev) > for (clk = OHCI_MAX_CLKS - 1; clk >= 0; clk--) > if (priv->clks[clk]) > clk_disable_unprepare(priv->clks[clk]); > + > + pm_runtime_put_sync(&dev->dev); > } > > static struct hc_driver __read_mostly ohci_platform_hc_driver; > @@ -242,6 +249,7 @@ static int ohci_platform_probe(struct platform_device > *dev) > } > #endif > > + pm_runtime_enable(&dev->dev); > if (pdata->power_on) { > err = pdata->power_on(dev); > if (err < 0) > @@ -271,6 +279,7 @@ static int ohci_platform_probe(struct platform_device > *dev) > if (pdata->power_off) > pdata->power_off(dev); > err_reset: > + pm_runtime_disable(&dev->dev); > while (--rst >= 0) > reset_control_assert(priv->resets[rst]); > err_put_clks: > @@ -305,6 +314,8 @@ static int ohci_platform_remove(struct platform_device > *dev) > > usb_put_hcd(hcd); > > + pm_runtime_disable(&dev->dev); > + > if (pdata == &ohci_platform_defaults) > dev->dev.platform_data = NULL; > > -- cheers, -roger -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
