Re: [PATCH] usb: chipidea: fix nobody cared IRQ when booting with host role

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On Thu, Nov 21, 2013 at 05:49:32PM +0100, Marc Kleine-Budde wrote:
> From: Peter Chen <Peter.Chen@xxxxxxxxxxxxx>
> 
> Not-Signed-off-by: Peter Chen <Peter.Chen@xxxxxxxxxxxxx>
> Reported-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
> Tested-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
> Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
> ---
> Hello,
> 
> I've moved the comment in ci_hdrc_probe() in front of the if. Peter can you
> please add a meaningfull description to the patch, as I don't fully understand
> how it really fixes the problem. Can you add stable on Cc for the final patch?
> 
> Tested on imx28-evk and custom board.
> 
> Marc
> 
>  drivers/usb/chipidea/core.c | 4 ++++
>  drivers/usb/chipidea/udc.c  | 3 ---
>  2 files changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
> index 40e1ed1..1aae446 100644
> --- a/drivers/usb/chipidea/core.c
> +++ b/drivers/usb/chipidea/core.c
> @@ -621,6 +621,10 @@ static int ci_hdrc_probe(struct platform_device *pdev)
>  			: CI_ROLE_GADGET;
>  	}
>  
> +	/* only update vbus status for peripheral */
> +	if (ci->role == CI_ROLE_GADGET)
> +		ci_handle_vbus_change(ci);
> +
>  	ret = ci_role_start(ci, ci->role);
>  	if (ret) {
>  		dev_err(dev, "can't start %s role\n", ci_role(ci)->name);
> diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
> index b34c819..69d20fb 100644
> --- a/drivers/usb/chipidea/udc.c
> +++ b/drivers/usb/chipidea/udc.c
> @@ -1795,9 +1795,6 @@ static int udc_start(struct ci_hdrc *ci)
>  	pm_runtime_no_callbacks(&ci->gadget.dev);
>  	pm_runtime_enable(&ci->gadget.dev);
>  
> -	/* Update ci->vbus_active */
> -	ci_handle_vbus_change(ci);
> -
>  	return retval;
>  
>  destroy_eps:
> -- 
> 1.8.4.2

Acked-by: Michael Grzeschik <mgr@xxxxxxxxxxxxxx>

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