[PATCH] gpio: pca953x: mask interrupts in irq shutdown

[Martin Larsson]

In the existing implementation irq_shutdown does not mask the interrupts
in hardware. This can cause spurious interrupts from the IO expander.
Add masking to irq_shutdown to prevent spurious interrupts.

Signed-off-by: Martin Larsson <martin.larsson@xxxxxxxx>
---
 drivers/gpio/gpio-pca953x.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index 8727ae54bc57..f93a3dbb2daa 100644
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -914,6 +914,8 @@ static void pca953x_irq_shutdown(struct irq_data *d)
 	clear_bit(hwirq, chip->irq_trig_fall);
 	clear_bit(hwirq, chip->irq_trig_level_low);
 	clear_bit(hwirq, chip->irq_trig_level_high);
+
+	pca953x_irq_mask(d);
 }
 
 static void pca953x_irq_print_chip(struct irq_data *data, struct seq_file *p)
-- 
2.51.0