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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2016-08-23 16:09:40 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-09-02 15:05:48 +0200 |
| commit | d2f5a7311bcaed681a41cb3419b8fe92a7b68bf5 (patch) | |
| tree | 9a7669cb11f6314817fced673fd63d26d7bc5153 /drivers/dma/hsu | |
| parent | 46e36683f433528bfb7e5754ca5c5c86c204c40a (diff) | |
| download | linux-0-day-d2f5a7311bcaed681a41cb3419b8fe92a7b68bf5.tar.gz linux-0-day-d2f5a7311bcaed681a41cb3419b8fe92a7b68bf5.tar.xz | |
dmaengine: hsu: refactor hsu_dma_do_irq() to return int
Since we have nice macro IRQ_RETVAL() we would use it to convert a flag of
handled interrupt from int to irqreturn_t.
The rationale of doing this is:
a) hence we implicitly mark hsu_dma_do_irq() as an auxiliary function that
can't be used as interrupt handler directly, and
b) to be in align with serial driver which is using serial8250_handle_irq()
that returns plain int by design.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/dma/hsu')
| -rw-r--r-- | drivers/dma/hsu/hsu.c | 9 | ||||
| -rw-r--r-- | drivers/dma/hsu/pci.c | 6 |
2 files changed, 7 insertions, 8 deletions
diff --git a/drivers/dma/hsu/hsu.c b/drivers/dma/hsu/hsu.c index c5f21efd6090e..29d04ca71d52e 100644 --- a/drivers/dma/hsu/hsu.c +++ b/drivers/dma/hsu/hsu.c @@ -200,10 +200,9 @@ EXPORT_SYMBOL_GPL(hsu_dma_get_status); * is not a normal timeout interrupt, ie. hsu_dma_get_status() returned 0. * * Return: - * IRQ_NONE for invalid channel number, IRQ_HANDLED otherwise. + * 0 for invalid channel number, 1 otherwise. */ -irqreturn_t hsu_dma_do_irq(struct hsu_dma_chip *chip, unsigned short nr, - u32 status) +int hsu_dma_do_irq(struct hsu_dma_chip *chip, unsigned short nr, u32 status) { struct hsu_dma_chan *hsuc; struct hsu_dma_desc *desc; @@ -211,7 +210,7 @@ irqreturn_t hsu_dma_do_irq(struct hsu_dma_chip *chip, unsigned short nr, /* Sanity check */ if (nr >= chip->hsu->nr_channels) - return IRQ_NONE; + return 0; hsuc = &chip->hsu->chan[nr]; @@ -230,7 +229,7 @@ irqreturn_t hsu_dma_do_irq(struct hsu_dma_chip *chip, unsigned short nr, } spin_unlock_irqrestore(&hsuc->vchan.lock, flags); - return IRQ_HANDLED; + return 1; } EXPORT_SYMBOL_GPL(hsu_dma_do_irq); diff --git a/drivers/dma/hsu/pci.c b/drivers/dma/hsu/pci.c index 9916058531d93..b51639f045eda 100644 --- a/drivers/dma/hsu/pci.c +++ b/drivers/dma/hsu/pci.c @@ -29,7 +29,7 @@ static irqreturn_t hsu_pci_irq(int irq, void *dev) u32 dmaisr; u32 status; unsigned short i; - irqreturn_t ret = IRQ_NONE; + int ret = 0; int err; dmaisr = readl(chip->regs + HSU_PCI_DMAISR); @@ -37,14 +37,14 @@ static irqreturn_t hsu_pci_irq(int irq, void *dev) if (dmaisr & 0x1) { err = hsu_dma_get_status(chip, i, &status); if (err > 0) - ret |= IRQ_HANDLED; + ret |= 1; else if (err == 0) ret |= hsu_dma_do_irq(chip, i, status); } dmaisr >>= 1; } - return ret; + return IRQ_RETVAL(ret); } static int hsu_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) |