[PATCH v12 08/11] gpiolib: request ACPI GPIO events for external IRQ domains

[Long Zhao via B4 Relay <devnull+longzhao.ambarella.com@kernel.org>]

From: Long Zhao <longzhao@ambarella.com>

gpiochip_add_irqchip() requests GPIO-signaled ACPI events after
installing the irqchip. A gpiochip that gets its IRQ domain through
gpiochip_irqchip_add_domain() never goes through that path, so _AEI
events, such as the power button on ARM64 ACPI platforms, are not
requested.

Request them here as well. gpiochip_remove() already calls
acpi_gpiochip_free_interrupts().

Cc: Mika Westerberg <westeri@kernel.org>
Cc: linux-acpi@vger.kernel.org
Signed-off-by: Long Zhao <longzhao@ambarella.com>
---
 drivers/gpio/gpiolib.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index e5fb60111151..63c51d9ee0bf 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -2353,7 +2353,15 @@ static void gpiochip_irqchip_remove(struct gpio_chip *gc)
 int gpiochip_irqchip_add_domain(struct gpio_chip *gc,
 				struct irq_domain *domain)
 {
-	return gpiochip_irqchip_add_allocated_domain(gc, domain, true);
+	int ret;
+
+	ret = gpiochip_irqchip_add_allocated_domain(gc, domain, true);
+	if (ret)
+		return ret;
+
+	acpi_gpiochip_request_interrupts(gc);
+
+	return 0;
 }
 EXPORT_SYMBOL_GPL(gpiochip_irqchip_add_domain);
 

-- 
2.34.1