diff options
Diffstat (limited to 'drivers/dma/hsu/pci.c')
| -rw-r--r-- | drivers/dma/hsu/pci.c | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/drivers/dma/hsu/pci.c b/drivers/dma/hsu/pci.c index 4ed6a4ef1512..8cdf715a7e9e 100644 --- a/drivers/dma/hsu/pci.c +++ b/drivers/dma/hsu/pci.c @@ -26,22 +26,19 @@ static irqreturn_t hsu_pci_irq(int irq, void *dev) { struct hsu_dma_chip *chip = dev; - u32 dmaisr; - u32 status; + unsigned long dmaisr; unsigned short i; + u32 status; int ret = 0; int err; dmaisr = readl(chip->regs + HSU_PCI_DMAISR); - for (i = 0; i < chip->hsu->nr_channels; i++) { - if (dmaisr & 0x1) { - err = hsu_dma_get_status(chip, i, &status); - if (err > 0) - ret |= 1; - else if (err == 0) - ret |= hsu_dma_do_irq(chip, i, status); - } - dmaisr >>= 1; + for_each_set_bit(i, &dmaisr, chip->hsu->nr_channels) { + err = hsu_dma_get_status(chip, i, &status); + if (err > 0) + ret |= 1; + else if (err == 0) + ret |= hsu_dma_do_irq(chip, i, status); } return IRQ_RETVAL(ret); |