[PATCH v3 4/4] gpio: sifive: Allow building the driver as a module

[Samuel Holland <samuel.holland@xxxxxxxxxx>]

This can reduce the kernel image size in multiplatform configurations.

Acked-by: Palmer Dabbelt <palmer@xxxxxxxxxxxx>
Reviewed-by: Andy Shevchenko <andy@xxxxxxxxxx>
Signed-off-by: Samuel Holland <samuel.holland@xxxxxxxxxx>
---

(no changes since v2)

Changes in v2:
 - Add MODULE_AUTHOR and MODULE_DESCRIPTION

 drivers/gpio/Kconfig       | 2 +-
 drivers/gpio/gpio-sifive.c | 6 +++++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index e382dfebad7c..1a8e8a8c85d6 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -564,7 +564,7 @@ config GPIO_SAMA5D2_PIOBU
 	  maintain their value during backup/self-refresh.
 
 config GPIO_SIFIVE
-	bool "SiFive GPIO support"
+	tristate "SiFive GPIO support"
 	depends on OF_GPIO
 	select IRQ_DOMAIN_HIERARCHY
 	select GPIO_GENERIC
diff --git a/drivers/gpio/gpio-sifive.c b/drivers/gpio/gpio-sifive.c
index 3545bc0fad13..bbc58ef0b6de 100644
--- a/drivers/gpio/gpio-sifive.c
+++ b/drivers/gpio/gpio-sifive.c
@@ -266,4 +266,8 @@ static struct platform_driver sifive_gpio_driver = {
 		.of_match_table = sifive_gpio_match,
 	},
 };
-builtin_platform_driver(sifive_gpio_driver)
+module_platform_driver(sifive_gpio_driver)
+
+MODULE_AUTHOR("Yash Shah <yash.shah@xxxxxxxxxx>");
+MODULE_DESCRIPTION("SiFive GPIO driver");
+MODULE_LICENSE("GPL");
-- 
2.40.1