diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2020-04-14 20:48:58 +0300 |
|---|---|---|
| committer | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2020-04-16 20:40:14 +0300 |
| commit | 5a4245de48d87f9300c3cac7c62e1af18916fb22 (patch) | |
| tree | d3ec0feebfa245b4ae1ab351c91557932907171f /drivers/gpio | |
| parent | 5c85418ab35bc84d33947e45b2e0ffe55aa8a484 (diff) | |
| download | linux-5a4245de48d87f9300c3cac7c62e1af18916fb22.tar.xz | |
gpio: pch: Get rid of unneeded variable in IRQ handler
There is no need to have an additional variable in IRQ handler. We may simple
rely on the fact of having non-zero register value we read from the hardware.
While here, drop repetitive messages in time critical function.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-pch.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/gpio/gpio-pch.c b/drivers/gpio/gpio-pch.c index 03eeacdb04fb..708272db6baf 100644 --- a/drivers/gpio/gpio-pch.c +++ b/drivers/gpio/gpio-pch.c @@ -303,14 +303,15 @@ static irqreturn_t pch_gpio_handler(int irq, void *dev_id) { struct pch_gpio *chip = dev_id; unsigned long reg_val = ioread32(&chip->reg->istatus); - int i, ret = IRQ_NONE; + int i; - for_each_set_bit(i, ®_val, gpio_pins[chip->ioh]) { - dev_dbg(chip->dev, "[%d]:irq=%d status=0x%lx\n", i, irq, reg_val); + dev_dbg(chip->dev, "irq=%d status=0x%lx\n", irq, reg_val); + + reg_val &= BIT(gpio_pins[chip->ioh]) - 1; + for_each_set_bit(i, ®_val, gpio_pins[chip->ioh]) generic_handle_irq(chip->irq_base + i); - ret = IRQ_HANDLED; - } - return ret; + + return IRQ_RETVAL(reg_val); } static int pch_gpio_alloc_generic_chip(struct pch_gpio *chip, |