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gpio: pca953x: Fix uninitialized pending variable

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When pca953x_irq_pending returns false, the pending parameter won't
be set. But pca953x_irq_handler continues using this uninitialized
variable as pending irqs and will cause problem.
Fix the issue by initializing pending to 0.

Fixes: 064c73afe738 ("gpio: pca953x: Synchronize interrupt handler properly")
Signed-off-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
This commit is contained in:
Ye Li 2020-09-23 02:03:44 -07:00 committed by Bartosz Golaszewski
parent 5ad284ab3a
commit e43c26e12d
1 changed files with 1 additions and 1 deletions
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2
drivers/gpio/gpio-pca953x.c
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@ -814,7 +814,7 @@ static irqreturn_t pca953x_irq_handler(int irq, void *devid)
{
struct pca953x_chip *chip = devid;
struct gpio_chip *gc = &chip->gpio_chip;
DECLARE_BITMAP(pending, MAX_LINE);
DECLARE_BITMAP(pending, MAX_LINE) = {};
int level;
bool ret;