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-rw-r--r--drivers/gpio/gpio-pca953x.c17
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index fb61f2fc6ed7..c2d6121c48c9 100644
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -824,8 +824,21 @@ static irqreturn_t pca953x_irq_handler(int irq, void *devid)
ret = pca953x_irq_pending(chip, pending);
mutex_unlock(&chip->i2c_lock);
- for_each_set_bit(level, pending, gc->ngpio)
- handle_nested_irq(irq_find_mapping(gc->irq.domain, level));
+ if (ret) {
+ ret = 0;
+
+ for_each_set_bit(level, pending, gc->ngpio) {
+ int nested_irq = irq_find_mapping(gc->irq.domain, level);
+
+ if (unlikely(nested_irq <= 0)) {
+ dev_warn_ratelimited(gc->parent, "unmapped interrupt %d\n", level);
+ continue;
+ }
+
+ handle_nested_irq(nested_irq);
+ ret = 1;
+ }
+ }
return IRQ_RETVAL(ret);
}