linux-kernel - Re: [PATCH v4 8/9] usb: chipidea: move usb_otg into struct ci

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Message-ID: <20140911002641.GB3609@peterchendt>
Date:	Thu, 11 Sep 2014 08:26:43 +0800
From:	Peter Chen <peter.chen@...escale.com>
To:	Antoine Tenart <antoine.tenart@...e-electrons.com>
CC:	<balbi@...com>, <gregkh@...uxfoundation.org>, <kishon@...com>,
	<stern@...land.harvard.edu>, <sergei.shtylyov@...entembedded.com>,
	<yoshihiro.shimoda.uh@...esas.com>,
	<alexandre.belloni@...e-electrons.com>,
	<thomas.petazzoni@...e-electrons.com>, <zmxu@...vell.com>,
	<jszhang@...vell.com>, <linux-usb@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 8/9] usb: chipidea: move usb_otg into struct ci_hdrc

On Wed, Sep 03, 2014 at 09:40:39AM +0200, Antoine Tenart wrote:
> Move the usb_otg member from struct usb_phy to struct ci_hdrc. Rework
> its initialization taking in account this modification.
> 
> Signed-off-by: Antoine Tenart <antoine.tenart@...e-electrons.com>
> ---
>  drivers/usb/chipidea/ci.h      |  1 +
>  drivers/usb/chipidea/host.c    |  5 +++--
>  drivers/usb/chipidea/otg_fsm.c | 16 +++-------------
>  3 files changed, 7 insertions(+), 15 deletions(-)
> 
> diff --git a/drivers/usb/chipidea/ci.h b/drivers/usb/chipidea/ci.h
> index b2caa1772712..dac5ab6adfa2 100644
> --- a/drivers/usb/chipidea/ci.h
> +++ b/drivers/usb/chipidea/ci.h
> @@ -177,6 +177,7 @@ struct ci_hdrc {
>  	struct ci_role_driver		*roles[CI_ROLE_END];
>  	enum ci_role			role;
>  	bool				is_otg;
> +	struct usb_otg			otg;
>  	struct otg_fsm			fsm;
>  	struct ci_otg_fsm_timer_list	*fsm_timer;
>  	struct work_struct		work;
> diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
> index 0b67d78dd953..4fcebb6a6d14 100644
> --- a/drivers/usb/chipidea/host.c
> +++ b/drivers/usb/chipidea/host.c
> @@ -85,10 +85,11 @@ static int host_start(struct ci_hdrc *ci)
>  	if (ret) {
>  		goto disable_reg;
>  	} else {
> -		struct usb_otg *otg = ci->usb_phy->otg;
> +		struct usb_otg *otg = &ci->otg;
>  
>  		ci->hcd = hcd;
> -		if (otg) {
> +
> +		if (ci_otg_is_fsm_mode(ci)) {
>  			otg->host = &hcd->self;
>  			hcd->self.otg_port = 1;
>  		}
> diff --git a/drivers/usb/chipidea/otg_fsm.c b/drivers/usb/chipidea/otg_fsm.c
> index 8a64ce87364e..862d7cb01b92 100644
> --- a/drivers/usb/chipidea/otg_fsm.c
> +++ b/drivers/usb/chipidea/otg_fsm.c
> @@ -778,20 +778,10 @@ void ci_hdrc_otg_fsm_start(struct ci_hdrc *ci)
>  int ci_hdrc_otg_fsm_init(struct ci_hdrc *ci)
>  {
>  	int retval = 0;
> -	struct usb_otg *otg;
>  
> -	otg = devm_kzalloc(ci->dev,
> -			sizeof(struct usb_otg), GFP_KERNEL);
> -	if (!otg) {
> -		dev_err(ci->dev,
> -		"Failed to allocate usb_otg structure for ci hdrc otg!\n");
> -		return -ENOMEM;
> -	}
> -
> -	otg->usb_phy = ci->usb_phy;
> -	otg->gadget = &ci->gadget;
> -	ci->fsm.otg = otg;
> -	ci->usb_phy->otg = ci->fsm.otg;
> +	ci->otg.usb_phy = ci->usb_phy;
> +	ci->otg.gadget = &ci->gadget;
> +	ci->fsm.otg = &ci->otg;
>  	ci->fsm.power_up = 1;
>  	ci->fsm.id = hw_read_otgsc(ci, OTGSC_ID) ? 1 : 0;
>  	ci->fsm.otg->state = OTG_STATE_UNDEFINED;
> -- 

Acked-by: Peter Chen <peter.chen@...escale.com>

-- 
Best Regards,
Peter Chen
--
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