On Wed, 13 Jun 2012, Richard Zhao wrote:
> Phy may need to change settings when port connect change.
>
> Signed-off-by: Richard Zhao <richard.zhao@xxxxxxxxxxxxx>
> ---
> 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 04fb834..e1a6d31 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>
> @@ -4034,6 +4035,13 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1,
> }
> }
>
> + if (unlikely(hcd->phy && !hdev->level)) {
This is okay, but it's more common to test for root hubs with
"!hdev->parent".
> + if (portstatus & USB_PORT_STAT_CONNECTION)
> + usb_phy_notify_connect(hcd->phy, port1);
> + else
> + usb_phy_notify_disconnect(hcd->phy, port1);
> + }
> +
> /* Return now if debouncing failed or nothing is connected or
> * the device was "removed".
> */
Alan Stern
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