linux-kernel - [PATCH 1/2] mm/ARM: dma: fix conflicting types for 'arm_dma_zone

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Date:	Tue, 10 Dec 2013 14:29:57 -0500
From:	Santosh Shilimkar <santosh.shilimkar@...com>
To:	<akpm@...ux-foundation.org>
CC:	<linux-mm@...ck.org>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>,
	Grygorii Strashko <grygorii.strashko@...com>,
	Russell King <linux@....linux.org.uk>,
	Rob Herring <rob.herring@...xeda.com>,
	Yinghai Lu <yinghai@...nel.org>, Tejun Heo <tj@...nel.org>,
	Santosh Shilimkar <santosh.shilimkar@...com>
Subject: [PATCH 1/2] mm/ARM: dma: fix conflicting types for 'arm_dma_zone_size'

From: Grygorii Strashko <grygorii.strashko@...com>

Commit 364230b9 "ARM: use phys_addr_t for DMA zone sizes" changes
type of arm_dma_zone_size to phys_addr_t, but misses to update
external definition of it in in arch/arm/include/asm/dma.h.
As result, kernel build is failed if CONFIG_ZONE_DMA is enabled:

arch/arm/mm/init.c:202:13: error: conflicting types for 'arm_dma_zone_size'
include/linux/bootmem.h:258:66: note: previous declaration of 'arm_dma_zone_size' was here

Hence, fix external definition of arm_dma_zone_size.

Cc: Russell King <linux@....linux.org.uk>
Cc: Rob Herring <rob.herring@...xeda.com>
Cc: Yinghai Lu <yinghai@...nel.org>
Cc: Tejun Heo <tj@...nel.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Grygorii Strashko <grygorii.strashko@...com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@...com>
---
 arch/arm/include/asm/dma.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/include/asm/dma.h b/arch/arm/include/asm/dma.h
index 58b8c6a..1439b80 100644
--- a/arch/arm/include/asm/dma.h
+++ b/arch/arm/include/asm/dma.h
@@ -8,7 +8,7 @@
 #define MAX_DMA_ADDRESS	0xffffffffUL
 #else
 #define MAX_DMA_ADDRESS	({ \
-	extern unsigned long arm_dma_zone_size; \
+	extern phys_addr_t arm_dma_zone_size; \
 	arm_dma_zone_size ? \
 		(PAGE_OFFSET + arm_dma_zone_size) : 0xffffffffUL; })
 #endif
-- 
1.7.9.5

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