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Message-ID: <20131114183742.GN10317@atomide.com>
Date: Thu, 14 Nov 2013 10:37:42 -0800
From: Tony Lindgren <tony@...mide.com>
To: Chen Gang <gang.chen@...anux.com>
Cc: Greg KH <gregkh@...uxfoundation.org>, linux-usb@...r.kernel.org,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
Will Deacon <will.deacon@....com>,
Catalin Marinas <Catalin.Marinas@....com>,
Russell King - ARM Linux <linux@....linux.org.uk>,
Felipe Balbi <balbi@...com>
Subject: Re: [PATCH] include/linux/usb/usb_phy_gen_xceiv.h: check built-in
or module for swithing usb_nop_xceiv_register() implementation
* Chen Gang <gang.chen@...anux.com> [131023 02:57]:
> When CONFIG_NOP_USB_XCEIV is as 'm', usb_nop_xceiv_register() will be
> exported when the related module is loaded. So for built-in source
> code, still need use the empty one.
>
> Or it will can not pass compiling, the related error (for arm, with
> allmodconfig):
>
> arch/arm/mach-omap2/built-in.o: In function `omap3_evm_init':
> arch/arm/mach-omap2/board-omap3evm.c:703: undefined reference to `usb_nop_xceiv_register'
>
>
> Signed-off-by: Chen Gang <gang.chen@...anux.com>
Added Felipe to cc, he should probably deal with this one.
Regards,
Tony
> ---
> include/linux/usb/usb_phy_gen_xceiv.h | 3 ++-
> 1 files changed, 2 insertions(+), 1 deletions(-)
>
> diff --git a/include/linux/usb/usb_phy_gen_xceiv.h b/include/linux/usb/usb_phy_gen_xceiv.h
> index f9a7e7b..8515958 100644
> --- a/include/linux/usb/usb_phy_gen_xceiv.h
> +++ b/include/linux/usb/usb_phy_gen_xceiv.h
> @@ -12,7 +12,8 @@ struct usb_phy_gen_xceiv_platform_data {
> unsigned int needs_reset:1;
> };
>
> -#if IS_ENABLED(CONFIG_NOP_USB_XCEIV)
> +#if IS_BUILTIN(CONFIG_NOP_USB_XCEIV) || \
> + (IS_MODULE(CONFIG_NOP_USB_XCEIV) && defined(MODULE))
> /* sometimes transceivers are accessed only through e.g. ULPI */
> extern void usb_nop_xceiv_register(void);
> extern void usb_nop_xceiv_unregister(void);
> --
> 1.7.7.6
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