[PATCH 08/10] dmaengine: fsldma: replace irq_of_parse_and_map with of_irq_get

[Rosen Penev <rosenp@gmail.com>]

Use of_irq_get which returns a negative error code on failure
instead of silently returning 0. Update the IRQ validation checks
in fsldma_request_irqs from !chan->irq to chan->irq <= 0 to handle
both 0 and negative error returns correctly.

Assisted-by: opencode:big-pickle
Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 drivers/dma/fsldma.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
index 0d73ce3dbfe6..79a268139b9f 100644
--- a/drivers/dma/fsldma.c
+++ b/drivers/dma/fsldma.c
@@ -1067,7 +1067,7 @@ static int fsldma_request_irqs(struct fsldma_device *fdev)
 		if (!chan)
 			continue;
 
-		if (!chan->irq) {
+		if (chan->irq <= 0) {
 			chan_err(chan, "interrupts property missing in device tree\n");
 			ret = -ENODEV;
 			goto out_unwind;
@@ -1090,7 +1090,7 @@ static int fsldma_request_irqs(struct fsldma_device *fdev)
 		if (!chan)
 			continue;
 
-		if (!chan->irq)
+		if (chan->irq <= 0)
 			continue;
 
 		free_irq(chan->irq, chan);
@@ -1180,7 +1180,7 @@ static int fsl_dma_chan_probe(struct fsldma_device *fdev,
 	dma_cookie_init(&chan->common);
 
 	/* find the IRQ line, if it exists in the device tree */
-	chan->irq = irq_of_parse_and_map(node, 0);
+	chan->irq = of_irq_get(node, 0);
 
 	/* Add the channel to DMA device channel list */
 	list_add_tail(&chan->common.device_node, &fdev->common.channels);
-- 
2.54.0