Dear Richard Zhao,
> On Sat, Jul 07, 2012 at 10:56:45PM +0800, Richard Zhao wrote:
> > Phy may need to change settings when port connect change.
> >
> > Signed-off-by: Richard Zhao <richard.zhao@xxxxxxxxxxxxx>
> > Tested-by: Subodh Nijsure <snijsure@xxxxxxxxxxxx>
> > ---
> >
> > drivers/usb/core/hub.c | 8 ++++++++
> > 1 file changed, 8 insertions(+)
> >
> > diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
> > index 4cc8dc9..2ba9d84 100644
> > --- a/drivers/usb/core/hub.c
> > +++ b/drivers/usb/core/hub.c
> > @@ -20,6 +20,7 @@
> >
> > #include <linux/usb.h>
> > #include <linux/usbdevice_fs.h>
> > #include <linux/usb/hcd.h>
> >
> > +#include <linux/usb/otg.h>
> >
> > #include <linux/usb/quirks.h>
> > #include <linux/kthread.h>
> > #include <linux/mutex.h>
> >
> > @@ -4037,6 +4038,13 @@ static void hub_port_connect_change(struct usb_hub
> > *hub, int port1,
> >
> > }
> >
> > }
> >
> > + if (unlikely(hcd->phy && !hdev->parent)) {
> > + if (portstatus & USB_PORT_STAT_CONNECTION)
> > + usb_phy_notify_connect(hcd->phy, port1);
> > + else
> > + usb_phy_notify_disconnect(hcd->phy, port1);
>
> There's another issue. When hcd is removed, notify disconnect is not
> called. Is it ok, if I remove the above two line and add below patch:
>
> --- a/drivers/usb/core/hub.c
> +++ b/drivers/usb/core/hub.c
> @@ -1924,6 +1924,11 @@ void usb_disconnect(struct usb_device **pdev)
> */
> device_del(&udev->dev);
>
> + if (udev->parent && !udev->parent->parent) {
> + struct usb_hcd *hcd = bus_to_hcd(udev->bus);
> + usb_phy_notify_disconnect(hcd->phy, udev->portnum);
> + }
Shouldn't that go before device_del() ?
> +
> /* Free the device number and delete the parent's children[]
> * (or root_hub) pointer.
> */
>
>
> Thanks
> Richard
Best regards,
Marek Vasut
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