linux-kernel - [PATCH] ARM: vt8500: Add missing NULL terminator in dt

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Message-Id: <1368776657-23035-1-git-send-email-srinivas.kandagatla@st.com>
Date:	Fri, 17 May 2013 08:44:17 +0100
From:	Srinivas KANDAGATLA <srinivas.kandagatla@...com>
To:	Tony Prisk <linux@...sktech.co.nz>
Cc:	Russell King <linux@....linux.org.uk>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Srinivas Kandagatla <srinivas.kandagatla@...com>
Subject: [PATCH] ARM: vt8500: Add missing NULL terminator in dt_compat

From: Srinivas Kandagatla <srinivas.kandagatla@...com>

When I tried booting a stih415 Dual core A9 with multi_v7_defconfig, it
failed to boot. The issues seems to be changing by enabling or disabling
VT8550 platform. Having a quick look at dt_compat list, it seems to miss
a NULL terminator, which means of_flat_dt_match will compat check will
cross the boundary of dt_compat and fault at some point , which is what
was happening in my case.

Without this patch if we try to boot multi_v7_defconfig you might notice
that some of the platforms might fault if they fall after vt8500 in
machine-desc list. Other platforms which fall before vt8500 in mdesc list
will not fault.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...com>
---
 arch/arm/mach-vt8500/vt8500.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-vt8500/vt8500.c b/arch/arm/mach-vt8500/vt8500.c
index 1dd281e..f5c33df 100644
--- a/arch/arm/mach-vt8500/vt8500.c
+++ b/arch/arm/mach-vt8500/vt8500.c
@@ -173,6 +173,7 @@ static const char * const vt8500_dt_compat[] = {
 	"wm,wm8505",
 	"wm,wm8750",
 	"wm,wm8850",
+	NULL
 };

 DT_MACHINE_START(WMT_DT, "VIA/Wondermedia SoC (Device Tree Support)")
-- 
1.7.6.5

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