linux-kernel - Re: [PATCH 5/8] usb: phy: msm: reset controller is mandatory now

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Message-ID: <1399558909.8165.8.camel@iivanov-dev>
Date:	Thu, 08 May 2014 17:21:49 +0300
From:	"Ivan T. Ivanov" <iivanov@...sol.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Felipe Balbi <balbi@...com>, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 5/8] usb: phy: msm: reset controller is mandatory now


Hi Arnd, 

On Thu, 2014-05-08 at 15:52 +0200, Arnd Bergmann wrote:
> Commit a27345434134 "usb: phy: msm: Use reset framework for LINK
> and PHY resets" introduced a mandatory call to reset_control_get
> into the msm usb phy driver, which means we have to add a Kconfig
> dependency on the API to avoid this build error:
> 
> phy/phy-msm-usb.c: In function 'msm_otg_read_dt':
> phy/phy-msm-usb.c:1461:2: error: implicit declaration of function 'devm_reset_control_get' [-Werror=implicit-function-declaration]
>   motg->link_rst = devm_reset_control_get(&pdev->dev, "link");
>   ^
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> Cc: "Ivan T. Ivanov" <iivanov@...sol.com>
> ---
>  drivers/usb/host/Kconfig | 2 +-
>  drivers/usb/phy/Kconfig  | 1 +
>  2 files changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
> index 3d9e540..890fc8c 100644
> --- a/drivers/usb/host/Kconfig
> +++ b/drivers/usb/host/Kconfig
> @@ -168,7 +168,7 @@ config USB_EHCI_HCD_AT91
>  
>  config USB_EHCI_MSM
>  	tristate "Support for Qualcomm QSD/MSM on-chip EHCI USB controller"
> -	depends on ARCH_MSM
> +	depends on ARCH_MSM && RESET_CONTROLLER

This driver did not use reset controller API.

>  	select USB_EHCI_ROOT_HUB_TT
>  	select USB_MSM_OTG
>  	---help---
> diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig
> index 359a6c1..65bec8f 100644
> --- a/drivers/usb/phy/Kconfig
> +++ b/drivers/usb/phy/Kconfig
> @@ -165,6 +165,7 @@ config USB_ISP1301
>  config USB_MSM_OTG
>  	tristate "Qualcomm on-chip USB OTG controller support"
>  	depends on (USB || USB_GADGET) && (ARCH_MSM || ARCH_QCOM)
> +	depends on RESET_CONTROLLER

This is fine. 

Thank you.
Ivan

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