extcon: arizona: Fix reset of HPDET after race with removal

We need to make sure we reset back to our starting state, especially
making sure that we have disabled poll in the register cache.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>

diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
index 5775f055bd0213391627d8ebf47413dcd02b5098..fefb8563db9eb760a1941483092b535022225e14 100644 (file)
--- a/drivers/extcon/extcon-arizona.c
+++ b/drivers/extcon/extcon-arizona.c
@@ -603,9 +603,15 @@ static irqreturn_t arizona_hpdet_irq(int irq, void *data)
                dev_err(arizona->dev, "Failed to report HP/line: %d\n",
                        ret);
 
+done:
+       /* Reset back to starting range */
+       regmap_update_bits(arizona->regmap,
+                          ARIZONA_HEADPHONE_DETECT_1,
+                          ARIZONA_HP_IMPEDANCE_RANGE_MASK | ARIZONA_HP_POLL,
+                          0);
+
        arizona_extcon_do_magic(info, 0);
 
-done:
        if (id_gpio)
                gpio_set_value_cansleep(id_gpio, 0);