diff options
| -rw-r--r-- | drivers/dma/dma-axi-dmac.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/dma/dma-axi-dmac.c b/drivers/dma/dma-axi-dmac.c index 0e0dfc0..7f0b9aa 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); |
