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[1/4] ARM: dma-mapping: Small logical clean up

Message ID 1346154232-13299-1-git-send-email-hdoyu@nvidia.com
State Accepted
Commit 5a796eeb7bbacc628044b12a2d000167ddbabec8
Headers show

Commit Message

Hiroshi Doyu Aug. 28, 2012, 11:43 a.m. UTC
Skip unnecessary operations if order == 0. A little bit easier to
read.

Signed-off-by: Hiroshi Doyu <hdoyu@nvidia.com>
---
 arch/arm/mm/dma-mapping.c |    9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)
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Patch

diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 70a6275..aaea5e4 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -1032,11 +1032,12 @@  static struct page **__iommu_alloc_buffer(struct device *dev, size_t size, gfp_t
 		if (!pages[i])
 			goto error;
 
-		if (order)
+		if (order) {
 			split_page(pages[i], order);
-		j = 1 << order;
-		while (--j)
-			pages[i + j] = pages[i] + j;
+			j = 1 << order;
+			while (--j)
+				pages[i + j] = pages[i] + j;
+		}
 
 		__dma_clear_buffer(pages[i], PAGE_SIZE << order);
 		i += 1 << order;