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[4.4-stable,16/22] dmaengine: zx: fix build warning

Message ID 20180220115527.1806578-17-arnd@arndb.de (mailing list archive)
State Not Applicable
Headers show

Commit Message

Arnd Bergmann Feb. 20, 2018, 11:55 a.m. UTC 
From: Jun Nie <jun.nie@linaro.org>

commit 067fdeb2f391bfa071f741a2b3eb74b8ff3785cd upstream.

Fix build warning that related to PAGE_SIZE. The maximum DMA
length has nothing to do with PAGE_SIZE, just use a fix number
for the definition.

drivers/dma/zx_dma.c: In function 'zx_dma_prep_memcpy':
drivers/dma/zx_dma.c:523:8: warning: division by zero [-Wdiv-by-zero]
drivers/dma/zx_dma.c: In function 'zx_dma_prep_slave_sg':
drivers/dma/zx_dma.c:567:11: warning: division by zero [-Wdiv-by-zero]

Signed-off-by: Jun Nie <jun.nie@linaro.org>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
[arnd: rebased to 4.4-stable]
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/dma/zx296702_dma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/dma/zx296702_dma.c b/drivers/dma/zx296702_dma.c
index 6059d81e701a..8e55403847b2 100644
--- a/drivers/dma/zx296702_dma.c
+++ b/drivers/dma/zx296702_dma.c
@@ -26,7 +26,7 @@ 
 
 #define DRIVER_NAME		"zx-dma"
 #define DMA_ALIGN		4
-#define DMA_MAX_SIZE		(0x10000 - PAGE_SIZE)
+#define DMA_MAX_SIZE		(0x10000 - 512)
 #define LLI_BLOCK_SIZE		(4 * PAGE_SIZE)
 
 #define REG_ZX_SRC_ADDR			0x00