linux-kernel - RE: [PATCH resend] usb: chipidea: Don't select EXTCON

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Message-ID: <HE1PR04MB1450E11255E0828180B3E8188BB40@HE1PR04MB1450.eurprd04.prod.outlook.com>
Date:   Fri, 20 Apr 2018 01:38:42 +0000
From:   Peter Chen <peter.chen@....com>
To:     Jisheng Zhang <Jisheng.Zhang@...aptics.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:     "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>
Subject: RE: [PATCH resend] usb: chipidea: Don't select EXTCON

 
>  drivers/usb/chipidea/Kconfig | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/drivers/usb/chipidea/Kconfig b/drivers/usb/chipidea/Kconfig index
> 785f0ed037f7..97509172d536 100644
> --- a/drivers/usb/chipidea/Kconfig
> +++ b/drivers/usb/chipidea/Kconfig
> @@ -1,7 +1,6 @@
>  config USB_CHIPIDEA
>  	tristate "ChipIdea Highspeed Dual Role Controller"
>  	depends on ((USB_EHCI_HCD && USB_GADGET) || (USB_EHCI_HCD
> && !USB_GADGET) || (!USB_EHCI_HCD && USB_GADGET)) && HAS_DMA
> -	select EXTCON
>  	select RESET_CONTROLLER
>  	help
>  	  Say Y here if your system has a dual role high speed USB
> --
> 2.17.0

Hi Jisheng,

Sorry to reply late, are you really care 2KB code side? Since many users use
EXTCON to handle vbus and id, it is hard just delete it. I could accept patch
for your specific platforms, like:

+	select EXTCON if !ARCH_XXXX

But please note, even your board uses SoC id/vbus pin to detect related external
signal, the other boards use the same SoC may use external gpios to do it.

Peter