linux-kernel - Re: [v4l-dvb-maintainer] 2.6.19-rc1: DVB frontend selection causes compile errors

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Date:	Mon, 9 Oct 2006 10:05:42 +0200
From:	Adrian Bunk <bunk@...sta.de>
To:	Michael Krufky <mkrufky@...uxtv.org>
Cc:	Linus Torvalds <torvalds@...l.org>, v4l-dvb-maintainer@...uxtv.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [v4l-dvb-maintainer] 2.6.19-rc1: DVB frontend selection causes compile errors

On Mon, Oct 09, 2006 at 03:53:00AM -0400, Michael Krufky wrote:
> Adrian Bunk wrote:
> > The DVB frontend selection changes in 2.6.19-rc1 are giving me the 
> > following compile error:
> > 
> > <--  snip  -->
> > 
> > ...
> >   LD      .tmp_vmlinux1
> > drivers/built-in.o: In function `dvb_init':
> > saa7134-dvb.c:(.text+0x91d94): undefined reference to `tda10086_attach'
> > saa7134-dvb.c:(.text+0x91db0): undefined reference to `tda826x_attach'
> > make: *** [.tmp_vmlinux1] Error 1
> > 
> > <--  snip  -->
> > 
> > .config attached.
> > 
> > cu
> > Adrian
> 
> 
> Adrian,

Hi Michael,

> Does this fix it for you?

it does fix it with my .config, but

> Signed-off-by: Michael Krufky <mkrufky@...uxtv.org>
> 
> diff -r 7efa405e2d66 linux/drivers/media/dvb/frontends/tda10086.h
> --- a/drivers/media/dvb/frontends/tda10086.h	Fri Oct 06 17:12:00 2006 -0300
> +++ b/drivers/media/dvb/frontends/tda10086.h	Mon Oct 09 03:43:28 2006 -0400
> @@ -35,7 +35,16 @@ struct tda10086_config
>  	u8 invert;
>  };
>  
> +#if defined(CONFIG_DVB_TDA10086) || defined(CONFIG_DVB_TDA10086_MODULE)
>  extern struct dvb_frontend* tda10086_attach(const struct tda10086_config* config,
>  					    struct i2c_adapter* i2c);
> +#else
> +static inline struct dvb_frontend* tda10086_attach(const struct tda10086_config* config,
> +						   struct i2c_adapter* i2c)
> +{
> +	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __FUNCTION__);
> +	return NULL;
> +}
> +#endif // CONFIG_DVB_TDA10086
>...

this breaks with CONFIG_VIDEO_SAA7134_DVB=y, CONFIG_DVB_TDA1004X=m.

#if defined(CONFIG_DVB_TDA10086) || (defined(CONFIG_DVB_TDA10086_MODULE) && defined(MODULE))
might work, but the whole manual frontend selection IMHO looks a bit 
fragile.

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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