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dmaengine: hsu: using for_each_set_bit to simplify the code 

It's more cleanly to use for_each_set_bit() instead of opencoding it.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20220713172235.22611-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Andy Shevchenko 2022-07-13 20:22:33 +03:00 committed by Vinod Koul
parent d5988dcc76
commit d6b76a45d5
1 changed files with 8 additions and 11 deletions
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19
drivers/dma/hsu/pci.c
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@ -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);