linux-kernel - [PATCH v13 9/9] arm: Fix DEBUG_LL for multi-platform kernels (without PL01X)

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Date:	Mon, 17 Nov 2014 14:49:10 +0000
From:	Daniel Thompson <daniel.thompson@...aro.org>
To:	Russell King <linux@....linux.org.uk>,
	Arnd Bergmann <arnd@...db.de>
Cc:	Daniel Thompson <daniel.thompson@...aro.org>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	spear-devel@...t.st.com, Paul Bolle <pebolle@...cali.nl>,
	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
	John Stultz <john.stultz@...aro.org>,
	Sumit Semwal <sumit.semwal@...aro.org>, patches@...aro.org,
	linaro-kernel@...ts.linaro.org
Subject: [PATCH v13 9/9] arm: Fix DEBUG_LL for multi-platform kernels (without PL01X)

When building a multi_v7_defconfig kernel it is not possible to configure
DEBUG_LL to use any serial device except a ARM Primecell PL01X, or more
accurately and worse, it is possible to configure a different serial
device but KConfig does not honour this request. In fact this also
overrides the user selection for some of the single platform kernels, for
example I don't think DEBUG_LL can be targeted at ICE or semihosted
supervisor for ARCH_VERSATILE.

This happens because DEBUG_UART_PL01X is automatically enabled by
some architectures and this means user decisions made regarding
the DEBUG_LL backend will be overridden. Problem is fixed by removing the
automatic enabling of this option.

Signed-off-by: Daniel Thompson <daniel.thompson@...aro.org>
Acked-by: Arnd Bergmann <arnd@...db.de>
---
 arch/arm/Kconfig.debug | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 612bdab25f70..43a5942ed60a 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -1160,12 +1160,7 @@ config DEBUG_LL_INCLUDE

 # Compatibility options for PL01x
 config DEBUG_UART_PL01X
-	def_bool ARCH_EP93XX || \
-		ARCH_INTEGRATOR || \
-		ARCH_SPEAR3XX || \
-		ARCH_SPEAR6XX || \
-		ARCH_SPEAR13XX || \
-		ARCH_VERSATILE
+	bool

 # Compatibility options for 8250
 config DEBUG_UART_8250
-- 
1.9.3

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