summaryrefslogtreecommitdiff
path: root/drivers/dma/dma-axi-dmac.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/dma/dma-axi-dmac.c')
-rw-r--r--drivers/dma/dma-axi-dmac.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/dma/dma-axi-dmac.c b/drivers/dma/dma-axi-dmac.c
index c34680943..7f0b9aa15 100644
--- a/drivers/dma/dma-axi-dmac.c
+++ b/drivers/dma/dma-axi-dmac.c
@@ -270,6 +270,9 @@ static irqreturn_t axi_dmac_interrupt_handler(int irq, void *devid)
unsigned int pending;
pending = axi_dmac_read(dmac, AXI_DMAC_REG_IRQ_PENDING);
+ if (!pending)
+ return IRQ_NONE;
+
axi_dmac_write(dmac, AXI_DMAC_REG_IRQ_PENDING, pending);
spin_lock(&dmac->chan.vchan.lock);
@@ -579,7 +582,9 @@ static int axi_dmac_probe(struct platform_device *pdev)
return -ENOMEM;
dmac->irq = platform_get_irq(pdev, 0);
- if (dmac->irq <= 0)
+ if (dmac->irq < 0)
+ return dmac->irq;
+ if (dmac->irq == 0)
return -EINVAL;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -683,6 +688,7 @@ static const struct of_device_id axi_dmac_of_match_table[] = {
{ .compatible = "adi,axi-dmac-1.00.a" },
{ },
};
+MODULE_DEVICE_TABLE(of, axi_dmac_of_match_table);
static struct platform_driver axi_dmac_driver = {
.driver = {