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gpio: msic: Remove duplicate check in IRQ handler 

There is no need to check for non-zero pending since for_each_set_bit() does it
on the first iteration.

While here, drop redundant assignment.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This commit is contained in:
Andy Shevchenko 2019-01-29 21:01:30 +02:00
parent 282db906ee
commit 1147575447
1 changed files with 3 additions and 6 deletions
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9
drivers/gpio/gpio-msic.c
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@ -237,20 +237,17 @@ static void msic_gpio_irq_handler(struct irq_desc *desc)
struct msic_gpio *mg = irq_data_get_irq_handler_data(data);
struct irq_chip *chip = irq_data_get_irq_chip(data);
struct intel_msic *msic = pdev_to_intel_msic(mg->pdev);
unsigned long pending;
int i;
int bitnr;
u8 pin;
unsigned long pending = 0;
for (i = 0; i < (mg->chip.ngpio / BITS_PER_BYTE); i++) {
intel_msic_irq_read(msic, INTEL_MSIC_GPIO0LVIRQ + i, &pin);
pending = pin;
if (pending) {
for_each_set_bit(bitnr, &pending, BITS_PER_BYTE)
generic_handle_irq(mg->irq_base +
(i * BITS_PER_BYTE) + bitnr);
}
for_each_set_bit(bitnr, &pending, BITS_PER_BYTE)
generic_handle_irq(mg->irq_base + i * BITS_PER_BYTE + bitnr);
}
chip->irq_eoi(data);
}