[v2] dmaengine: zynqmp_dma: Fix static checker warning

Commit Message

Appana Durga Kedareswara rao July 14, 2016, 1:30 p.m. UTC

This patch fixes the below static checker warning
drivers/dma/xilinx/zynqmp_dma.c:973 zynqmp_dma_chan_probe()
        warn: was && intended here instead of ||?

Reported-by: Dan Carpenter <[e-mail]>
Signed-off-by: Kedareswara rao Appana <[e-mail]>
---
Changes for v2:
---> Return EINVAL instead of err as suggested by Dan.

 drivers/dma/xilinx/zynqmp_dma.c |   11 ++++++++---
 1 files changed, 8 insertions(+), 3 deletions(-)

Comments

Dan Carpenter July 14, 2016, 1:40 p.m. UTC | #1

Looks good.  Thanks!

regards,
dan carpenter

Vinod Koul July 24, 2016, 5:51 a.m. UTC | #2

On Thu, Jul 14, 2016 at 07:00:55PM +0530, Kedareswara rao Appana wrote:
> This patch fixes the below static checker warning
> drivers/dma/xilinx/zynqmp_dma.c:973 zynqmp_dma_chan_probe()
>         warn: was && intended here instead of ||?

Applied, thanks

Patch

diff --git a/drivers/dma/xilinx/zynqmp_dma.c b/drivers/dma/xilinx/zynqmp_dma.c
index f777a5b..b18d51f 100644
--- a/drivers/dma/xilinx/zynqmp_dma.c
+++ b/drivers/dma/xilinx/zynqmp_dma.c
@@ -970,12 +970,17 @@  static int zynqmp_dma_chan_probe(struct zynqmp_dma_device *zdev,
 	chan->dst_burst_len = ZYNQMP_DMA_AWLEN_RST_VAL;
 	chan->src_burst_len = ZYNQMP_DMA_ARLEN_RST_VAL;
 	err = of_property_read_u32(node, "xlnx,bus-width", &chan->bus_width);
-	if ((err < 0) && ((chan->bus_width != ZYNQMP_DMA_BUS_WIDTH_64) ||
-			  (chan->bus_width != ZYNQMP_DMA_BUS_WIDTH_128))) {
-		dev_err(zdev->dev, "invalid bus-width value");
+	if (err < 0) {
+		dev_err(&pdev->dev, "missing xlnx,bus-width property\n");
 		return err;
 	}
 
+	if (chan->bus_width != ZYNQMP_DMA_BUS_WIDTH_64 &&
+	    chan->bus_width != ZYNQMP_DMA_BUS_WIDTH_128) {
+		dev_err(zdev->dev, "invalid bus-width value");
+		return -EINVAL;
+	}
+
 	chan->is_dmacoherent =  of_property_read_bool(node, "dma-coherent");
 	zdev->chan = chan;
 	tasklet_init(&chan->tasklet, zynqmp_dma_do_tasklet, (ulong)chan);