linux-kernel - Re: [RFC 07/19] dwc3: core: cleanup suspend/resume code

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Date:	Wed, 18 Mar 2015 18:00:40 +0300
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Robert Baldyga <r.baldyga@...sung.com>, balbi@...com
CC:	gregkh@...uxfoundation.org, myungjoo.ham@...sung.com,
	cw00.choi@...sung.com, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org, m.szyprowski@...sung.com
Subject: Re: [RFC 07/19] dwc3: core: cleanup suspend/resume code

Hello.

On 3/18/2015 5:04 PM, Robert Baldyga wrote:

> Remove unused cases from switch-case statement and place
> dwc3_event_buffers_cleanup() function outside switch-case
> as it's called in each case anyway.

> Signed-off-by: Robert Baldyga <r.baldyga@...sung.com>
> ---
>   drivers/usb/dwc3/core.c | 8 ++------
>   1 file changed, 2 insertions(+), 6 deletions(-)

> diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
> index 2bbab3d..b040ce0 100644
> --- a/drivers/usb/dwc3/core.c
> +++ b/drivers/usb/dwc3/core.c
> @@ -1018,13 +1018,12 @@ static int dwc3_suspend(struct device *dev)
>   	case USB_DR_MODE_PERIPHERAL:
>   	case USB_DR_MODE_OTG:
>   		dwc3_gadget_suspend(dwc);
> -		/* FALLTHROUGH */

    Why are you removing comment that stays valid?

> -	case USB_DR_MODE_HOST:
>   	default:
> -		dwc3_event_buffers_cleanup(dwc);
>   		break;
>   	}
>
> +	dwc3_event_buffers_cleanup(dwc);
> +
>   	dwc->gctl = dwc3_readl(dwc->regs, DWC3_GCTL);
>   	spin_unlock_irqrestore(&dwc->lock, flags);
>
> @@ -1061,10 +1060,7 @@ static int dwc3_resume(struct device *dev)
>   	case USB_DR_MODE_PERIPHERAL:
>   	case USB_DR_MODE_OTG:
>   		dwc3_gadget_resume(dwc);
> -		/* FALLTHROUGH */

    Likewise.

> -	case USB_DR_MODE_HOST:
>   	default:
> -		/* do nothing */
>   		break;
>   	}
>

WBR, Sergei

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