[PATCH] scsi: aha1740: use dma_mapping_error to check map errors

[Chen Ni <nichen@xxxxxxxxxxx>]

The return value of dma_map_single() should be checked by
dma_mapping_error(). Update the check accordingly.

Signed-off-by: Chen Ni <nichen@xxxxxxxxxxx>
---
 drivers/scsi/aha1740.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/aha1740.c b/drivers/scsi/aha1740.c
index 3d18945abaf7..9768be6fc919 100644
--- a/drivers/scsi/aha1740.c
+++ b/drivers/scsi/aha1740.c
@@ -598,7 +598,7 @@ static int aha1740_probe (struct device *dev)
 	host->ecb_dma_addr = dma_map_single (&edev->dev, host->ecb,
 					     sizeof (host->ecb),
 					     DMA_BIDIRECTIONAL);
-	if (!host->ecb_dma_addr) {
+	if (dma_mapping_error(&edev->dev, host->ecb_dma_addr)) {
 		printk (KERN_ERR "aha1740_probe: Couldn't map ECB, giving up\n");
 		goto err_host_put;
 	}
-- 
2.25.1