[patch] dmaengine: make dma_submit_error() return an error code

Dan Carpenter
2013-08-10T07:47:08Z

The problem here is that the dma_xfer() functions in
drivers/ata/pata_arasan_cf.c and drivers/mtd/nand/fsmc_nand.c expect
dma_submit_error() to return an error code so they return 1 when they
intended to return a negative.

So far as I can tell, none of the ->tx_submit() functions ever do
return error codes so this patch should have no effect in the current
code.

I also changed it from a define to an inline.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index 5692bc3..16321fb 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -38,7 +38,10 @@ typedef s32 dma_cookie_t;
#define DMA_MIN_COOKIE 1
#define DMA_MAX_COOKIE INT_MAX

-#define dma_submit_error(cookie) ((cookie) < 0 ? 1 : 0)
+static inline int dma_submit_error(dma_cookie_t cookie)
+{
+ return cookie < 0 ? cookie : 0;
+}

/**
* enum dma_status - DMA transaction status