[linux-yocto] [PATCHv2 4/6] pinctrl-baytrail: unmap interrupt when free the gpio pin

[rebecca.swee.fun.chang at intel.com]

From: "Chew, Kean Ho" <kean.ho.chew at intel.com>

In to_irq() callback, we create the hwirq to linux irq
mapping for the requested GPIO pin. Hence, we unamp
the mapping when the gpio pin is being released.

Signed-off-by: Chew, Kean Ho <kean.ho.chew at intel.com>
Signed-off-by: Chew, Chiau Ee <chiau.ee.chew at intel.com>
Signed-off-by: Sreeju Selvaraj <sreeju.armughanx.selvaraj at intel.com>
---
 drivers/pinctrl/pinctrl-baytrail.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/pinctrl/pinctrl-baytrail.c b/drivers/pinctrl/pinctrl-baytrail.c
index ea17f0d..5dee6d7 100644
--- a/drivers/pinctrl/pinctrl-baytrail.c
+++ b/drivers/pinctrl/pinctrl-baytrail.c
@@ -196,11 +196,14 @@ static void byt_gpio_free(struct gpio_chip *chip, unsigned offset)
 	struct byt_gpio *vg = to_byt_gpio(chip);
 	void __iomem *reg = byt_gpio_reg(&vg->chip, offset, BYT_CONF0_REG);
 	u32 value;
+	unsigned int virq;
 
 	/* clear interrupt triggering */
 	value = readl(reg);
 	value &= ~(BYT_TRIG_POS | BYT_TRIG_NEG | BYT_TRIG_LVL);
 	writel(value, reg);
+	virq = irq_find_mapping(vg->domain, offset);
+	irq_dispose_mapping(virq);
 
 	pm_runtime_put(&vg->pdev->dev);
 }
-- 
1.9.1