linux-kernel - [PATCH v3 7/7] ARM: dma: use phys_addr_t in __dma_page_[cpu_to_dev/dev_to

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Message-ID: <1398353407-2345-8-git-send-email-santosh.shilimkar@ti.com>
Date:	Thu, 24 Apr 2014 11:30:07 -0400
From:	Santosh Shilimkar <santosh.shilimkar@...com>
To:	<linux-kernel@...r.kernel.org>
CC:	<linux-arm-kernel@...ts.infradead.org>,
	<devicetree@...r.kernel.org>,
	Santosh Shilimkar <santosh.shilimkar@...com>,
	Nicolas Pitre <nicolas.pitre@...aro.org>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>
Subject: [PATCH v3 7/7] ARM: dma: use phys_addr_t in __dma_page_[cpu_to_dev/dev_to_cpu]

On a 32 bit ARM architecture with LPAE extension physical addresses
cannot fit into unsigned long variable.

So fix it by using phys_addr_t instead of unsigned long.

Cc: Nicolas Pitre <nicolas.pitre@...aro.org>
Cc: Russell King - ARM Linux <linux@....linux.org.uk>
Cc: Catalin Marinas <catalin.marinas@....com>
Cc: Will Deacon <will.deacon@....com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@...com>
---
 arch/arm/mm/dma-mapping.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index f62aa06..5260f43 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -885,7 +885,7 @@ static void dma_cache_maint_page(struct page *page, unsigned long offset,
 static void __dma_page_cpu_to_dev(struct page *page, unsigned long off,
 	size_t size, enum dma_data_direction dir)
 {
-	unsigned long paddr;
+	phys_addr_t paddr;
 
 	dma_cache_maint_page(page, off, size, dir, dmac_map_area);
 
@@ -901,7 +901,7 @@ static void __dma_page_cpu_to_dev(struct page *page, unsigned long off,
 static void __dma_page_dev_to_cpu(struct page *page, unsigned long off,
 	size_t size, enum dma_data_direction dir)
 {
-	unsigned long paddr = page_to_phys(page) + off;
+	phys_addr_t paddr = page_to_phys(page) + off;
 
 	/* FIXME: non-speculating: not required */
 	/* don't bother invalidating if DMA to device */
-- 
1.7.9.5

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