linux-kernel - Re: [v4l-dvb-maintainer] [2.6 patch] cx88/saa7134: remove unused -DHAVE_VIDEO_BUF

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Date:	Thu, 07 Dec 2006 10:36:01 -0500
From:	Michael Krufky <mkrufky@...uxtv.org>
To:	Adrian Bunk <bunk@...sta.de>
CC:	mchehab@...radead.org, v4l-dvb-maintainer@...uxtv.org,
	linux-kernel@...r.kernel.org
Subject: Re: [v4l-dvb-maintainer] [2.6 patch] cx88/saa7134: remove unused
 -DHAVE_VIDEO_BUF_DVB

Adrian Bunk wrote:
> This patch removes the unused HAVE_VIDEO_BUF_DVB define.
> 
> Signed-off-by: Adrian Bunk <bunk@...sta.de>
> 
> --- linux-2.6.19-rc6-mm2/drivers/media/video/cx88/Makefile.old	2006-12-07 15:04:11.000000000 +0100
> +++ linux-2.6.19-rc6-mm2/drivers/media/video/cx88/Makefile	2006-12-07 15:05:04.000000000 +0100
> @@ -13,7 +13,6 @@
>  EXTRA_CFLAGS += -Idrivers/media/dvb/dvb-core
>  EXTRA_CFLAGS += -Idrivers/media/dvb/frontends
>  
> -extra-cflags-$(CONFIG_VIDEO_BUF_DVB) += -DHAVE_VIDEO_BUF_DVB=1
>  extra-cflags-$(CONFIG_VIDEO_CX88_VP3054)+= -DHAVE_VP3054_I2C=1
>  
>  EXTRA_CFLAGS += $(extra-cflags-y) $(extra-cflags-m)
> --- linux-2.6.19-rc6-mm2/drivers/media/video/saa7134/Makefile.old	2006-12-07 15:04:45.000000000 +0100
> +++ linux-2.6.19-rc6-mm2/drivers/media/video/saa7134/Makefile	2006-12-07 15:04:58.000000000 +0100
> @@ -15,6 +15,3 @@
>  EXTRA_CFLAGS += -Idrivers/media/dvb/dvb-core
>  EXTRA_CFLAGS += -Idrivers/media/dvb/frontends
>  
> -extra-cflags-$(CONFIG_VIDEO_BUF_DVB) += -DHAVE_VIDEO_BUF_DVB=1
> -
> -EXTRA_CFLAGS += $(extra-cflags-y) $(extra-cflags-m)

NACK.

HAVE_VIDEO_BUF_DVB is not "unused" ... This symbol is tested for in the
following locations:

cx88.h:34:#ifdef HAVE_VIDEO_BUF_DVB
cx88.h:327:#ifdef HAVE_VIDEO_BUF_DVB
cx88.h:503:#ifdef HAVE_VIDEO_BUF_DVB
cx88-i2c.c:157:#ifdef HAVE_VIDEO_BUF_DVB
saa7134.h:51:#ifdef HAVE_VIDEO_BUF_DVB
saa7134.h:569:#ifdef HAVE_VIDEO_BUF_DVB

...We need this in order to allow compilation of the cx88 / saa7134 modules
without DVB support. (analog only)

If you want to convert the HAVE_VIDEO_BUF_DVB to a kconfig #ifdef test
for CONFIG_VIDEO_BUF_DVB, that would be acceptable.

Regards,

Michael Krufky

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