Re: [PATCH] usb: dwc2: resume root hub when device detect with suspend state

[Sergei Shtylyov]

Hello.

On 11/17/2014 04:14 PM, Kever Yang wrote:

> After we implement the bus_suspend/resume, auto suspend id enabled.
> The root hub will be auto suspend if there is no device connected,
> we need to resume the root hub when a device connect detect.

> This patch tested on rk3288.

> Signed-off-by: Roy Li <roy.li@xxxxxxxxxxxxxx>
> Signed-off-by: Kever Yang <kever.yang@xxxxxxxxxxxxxx>
> ---

>   drivers/usb/dwc2/hcd_intr.c | 7 +++++++
>   1 file changed, 7 insertions(+)

> diff --git a/drivers/usb/dwc2/hcd_intr.c b/drivers/usb/dwc2/hcd_intr.c
> index 551ba87..c8299fd 100644
> --- a/drivers/usb/dwc2/hcd_intr.c
> +++ b/drivers/usb/dwc2/hcd_intr.c
> @@ -355,6 +355,13 @@ static void dwc2_port_intr(struct dwc2_hsotg *hsotg)
>   		hprt0_modify |= HPRT0_CONNDET;
>
>   		/*
> +		 * Check if root hub is in suspend state
> +		 * if root hub in suspend, resume it.
> +		 */
> +		if ((bus->root_hub) && (hcd->state == HC_STATE_SUSPENDED))

   Inner parens are not needed, especially the first ones.

[...]

WBR, Sergei

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