[PATCH v2] gpio: davinci: add support of module build

[Nicolas Frayer <nfrayer@xxxxxxxxxxxx>]

From: Guillaume La Roque <glaroque@xxxxxxxxxxxx>

Added module build support for the davinci gpio driver

Signed-off-by: Guillaume La Roque <glaroque@xxxxxxxxxxxx>
Signed-off-by: Nicolas Frayer <nfrayer@xxxxxxxxxxxx>
---
v1->v2:
Keep postcore_initcall() instead of using module_init() 

 drivers/gpio/Kconfig        |  2 +-
 drivers/gpio/gpio-davinci.c | 11 +++++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index a01af1180616..f8bace51c2d0 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -219,7 +219,7 @@ config GPIO_CLPS711X
 	  Say yes here to support GPIO on CLPS711X SoCs.
 
 config GPIO_DAVINCI
-	bool "TI Davinci/Keystone GPIO support"
+	tristate "TI Davinci/Keystone GPIO support"
 	default y if ARCH_DAVINCI
 	depends on (ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)
 	help
diff --git a/drivers/gpio/gpio-davinci.c b/drivers/gpio/gpio-davinci.c
index 59c4c48d8296..5ddac03dac8a 100644
--- a/drivers/gpio/gpio-davinci.c
+++ b/drivers/gpio/gpio-davinci.c
@@ -730,3 +730,14 @@ static int __init davinci_gpio_drv_reg(void)
 	return platform_driver_register(&davinci_gpio_driver);
 }
 postcore_initcall(davinci_gpio_drv_reg);
+
+static void __exit davinci_gpio_exit(void)
+{
+	platform_driver_unregister(&davinci_gpio_driver);
+}
+module_exit(davinci_gpio_exit);
+
+MODULE_AUTHOR("Jan Kotas <jank@xxxxxxxxxxx>");
+MODULE_DESCRIPTION("DAVINCI GPIO driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:gpio-davinci");
-- 
2.25.1