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Message-ID: <9632a61d-fb15-4764-93ae-d6f4049cba82@redhat.com>
Date:   Tue, 17 Apr 2018 11:01:41 +0200
From:   Hans de Goede <hdegoede@...hat.com>
To:     Randy Dunlap <rdunlap@...radead.org>,
        USB list <linux-usb@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Cc:     Fengguang Wu <fengguang.wu@...el.com>,
        MyungJoo Ham <myungjoo.ham@...sung.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Subject: Re: [PATCH] usb: always build usb/common/ targets; fixes
 extcon-axp288 build error

Hi,

On 17-04-18 07:14, Randy Dunlap wrote:
> From: Randy Dunlap <rdunlap@...radead.org>
> 
> The extcon-axp288 driver selects USB_ROLE_SWITCH, but the USB
> Makefile does not currently build drivers/usb/common/ (where
> USB_ROLE_SWITCH code is) unless USB_COMMON is set, so modify
> the USB Makefile to always descend into drivers/usb/common/
> to build its configured targets.
> 
> Fixes these build errors:
> 
> ERROR: "usb_role_switch_get" [drivers/extcon/extcon-axp288.ko] undefined!
> ERROR: "usb_role_switch_set_role" [drivers/extcon/extcon-axp288.ko] undefined!
> ERROR: "usb_role_switch_get_role" [drivers/extcon/extcon-axp288.ko] undefined!
> ERROR: "usb_role_switch_put" [drivers/extcon/extcon-axp288.ko] undefined!
> 
> An alternative patch would be to select USB_COMMON in the EXTCON_AXP288
> driver Kconfig entry, but this would build more code in
> drivers/usb/common/ than is necessary.

Ah, that variant of fixing this got posted yesterday and I acked that,
but I agree that this version is better.

Greg, what is your take on this fix?

Chanwoo Choi, please wait with merging the fix from yesterday until
we've a decision which fix to use.

Regards,

Hans



> 
> Reported-by: Fengguang Wu <fengguang.wu@...el.com>
> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
> Cc: MyungJoo Ham <myungjoo.ham@...sung.com>
> Cc: Chanwoo Choi <cw00.choi@...sung.com>
> Cc: Hans de Goede <hdegoede@...hat.com>
> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Cc: Andy Shevchenko <andy.shevchenko@...il.com>
> Cc: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
> Cc: linux-usb@...r.kernel.org
> ---
>   drivers/usb/Makefile |    2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> --- lnx-417-rc1.orig/drivers/usb/Makefile
> +++ lnx-417-rc1/drivers/usb/Makefile
> @@ -60,7 +60,7 @@ obj-$(CONFIG_USB_CHIPIDEA)	+= chipidea/
>   obj-$(CONFIG_USB_RENESAS_USBHS)	+= renesas_usbhs/
>   obj-$(CONFIG_USB_GADGET)	+= gadget/
>   
> -obj-$(CONFIG_USB_COMMON)	+= common/
> +obj-y				+= common/
>   
>   obj-$(CONFIG_USBIP_CORE)	+= usbip/
>   
> 
> 

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