diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-10-20 00:10:27 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-10-20 00:10:27 -0300 |
commit | d0b2f91bede3bd5e3d24dd6803e56eee959c1797 (patch) | |
tree | 7fee4ab0509879c373c4f2cbd5b8a5be5b4041ee /drivers/dma/dma-axi-dmac.c | |
parent | e914f8eb445e8f74b00303c19c2ffceaedd16a05 (diff) |
Linux-libre 4.8.2-gnupck-4.8.2-gnu
Diffstat (limited to 'drivers/dma/dma-axi-dmac.c')
-rw-r--r-- | drivers/dma/dma-axi-dmac.c | 8 |
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 = { |