linux-kernel - [PATCH] saa7134: Fix strange kconfig dependency on RC

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Date:	Thu, 10 Mar 2011 17:41:29 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Mauro Carvalho Chehab <mchehab@...hat.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	linux-kbuild <linux-kbuild@...r.kernel.org>,
	Michal Marek <mmarek@...e.cz>,
	Linux Media Mailing List <linux-media@...r.kernel.org>
Subject: [PATCH] saa7134: Fix strange kconfig dependency on RC_CORE

As the code in saa7134-input is not a module, but the config for it is
set as a boolean instead of a tristate, this causes a strange dependency
on RC_CORE.

VIDEO_SAA7134_RC (which determines if saa7134-input.o is built) depends
on RC_CORE and VIDEO_SAA7134. If VIDEO_SAA7134 is compiled as 'y' but
RC_CORE is compiled as 'm' VIDEO_SAA7134_RC can still be set to 'y'
which causes undefined symbols that it needs from RC_CORE.

The simplest solution is to not allow VIDEO_SAA7134_RC be enabled if
RC_CORE compiled as a module (m) and VIDEO_SA7134 is compiled into the
kernel (y).

Suggested-by: Mauro Carvalho Chehab <mchehab@...hat.com>
Cc: Michal Marek <mmarek@...e.cz>
Cc: linux-kbuild <linux-kbuild@...r.kernel.org>
Signed-off-by: Steven Rostedt <rostedt@...dmis.org>

---
 drivers/media/video/saa7134/Kconfig |    1 +
 1 file changed, 1 insertion(+)

Index: linux-test.git/drivers/media/video/saa7134/Kconfig
===================================================================
--- linux-test.git.orig/drivers/media/video/saa7134/Kconfig	2011-03-07 22:01:13.046263327 -0500
+++ linux-test.git/drivers/media/video/saa7134/Kconfig	2011-03-10 16:18:26.426709736 -0500
@@ -28,6 +28,7 @@ config VIDEO_SAA7134_RC
 	bool "Philips SAA7134 Remote Controller support"
 	depends on RC_CORE
 	depends on VIDEO_SAA7134
+	depends on !(RC_CORE=m && VIDEO_SAA7134=y)
 	default y
 	---help---
 	  Enables Remote Controller support on saa7134 driver.


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