linux-kernel - [PATCH] arm: Do not overwrite __machine_arch

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Date:	Tue, 19 Aug 2014 11:21:31 +0800
From:	Peng Fan <van.freenix@...il.com>
To:	Russell King <linux@....linux.org.uk>,
	Rob Herring <robh@...nel.org>,
	Laura Abbott <lauraa@...eaurora.org>,
	Mark Rutland <mark.rutland@....com>,
	Santosh Shilimkar <santosh.shilimkar@...com>,
	Sudeep KarkadaNagesha <sudeep.karkadanagesha@....com>,
	Stephen Boyd <sboyd@...eaurora.org>
CC:	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH] arm: Do not overwrite __machine_arch_type

If using DT_MACHINE_START when enabled CONFIG_OF, the nr of mdesc is ~0.
The value of __machine_arch_type is passsed from bootloader using reigster
r1, and assigned in head-common.S. Remove this line to avoid overwrite it.

Signed-off-by: Peng Fan <van.freenix@...il.com>
---
 arch/arm/kernel/devtree.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/arch/arm/kernel/devtree.c b/arch/arm/kernel/devtree.c
index 11c54de..3a04486 100644
--- a/arch/arm/kernel/devtree.c
+++ b/arch/arm/kernel/devtree.c
@@ -243,8 +243,5 @@ const struct machine_desc * __init setup_machine_fdt(unsigned int dt_phys)
 
 	early_init_dt_scan_nodes();
 
-	/* Change machine number to match the mdesc we're using */
-	__machine_arch_type = mdesc->nr;
-
 	return mdesc;
 }
-- 
1.8.4


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