linux-kernel - [PATCH 2/2] x86/dma: is_device_dma

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Date:	Wed, 23 Mar 2016 09:40:10 +0800
From:	Yaowei Bai <baiyaowei@...s.chinamobile.com>
To:	tglx@...utronix.de, mingo@...nel.org, hpa@...or.com
Cc:	x86@...nel.org, linux-kernel@...r.kernel.org,
	baiyaowei@...s.chinamobile.com
Subject: [PATCH 2/2] x86/dma: is_device_dma_capable can be boolean

This patch makes is_device_dma_capable return bool to improve
readability due to this particular function only using either
one or zero as its return value.

No functional change.

Signed-off-by: Yaowei Bai <baiyaowei@...s.chinamobile.com>
---
 include/linux/dma-mapping.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index 5e45cf9..175c20f 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -81,7 +81,7 @@ static inline int valid_dma_direction(int dma_direction)
 		(dma_direction == DMA_FROM_DEVICE));
 }
 
-static inline int is_device_dma_capable(struct device *dev)
+static inline bool is_device_dma_capable(struct device *dev)
 {
 	return dev->dma_mask != NULL && *dev->dma_mask != DMA_MASK_NONE;
 }
-- 
1.9.1