[PATCH 5/5] drivers/tty/serial: make 8250/8250_mtk.c explicitly non-modular

From: Paul Gortmaker
Date: Sun Oct 18 2015 - 18:24:13 EST


The Kconfig currently controlling compilation of this code is:

drivers/tty/serial/8250/Kconfig:config SERIAL_8250_MT6577
drivers/tty/serial/8250/Kconfig: bool "Mediatek serial port support"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

We explicitly disallow a driver unbind, since that doesn't have a
sensible use case anyway, and it allows us to drop the ".remove"
code for non-modular drivers.

Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.

We also delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.

Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.

Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Jiri Slaby <jslaby@xxxxxxxx>
Cc: Matthias Brugger <matthias.bgg@xxxxxxxxx>
Cc: linux-serial@xxxxxxxxxxxxxxx
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: linux-mediatek@xxxxxxxxxxxxxxxxxxx
Signed-off-by: Paul Gortmaker <paul.gortmaker@xxxxxxxxxxxxx>
---
drivers/tty/serial/8250/8250_mtk.c | 35 +++++++----------------------------
1 file changed, 7 insertions(+), 28 deletions(-)

diff --git a/drivers/tty/serial/8250/8250_mtk.c b/drivers/tty/serial/8250/8250_mtk.c
index 78883ca64ddd..0e590b233f03 100644
--- a/drivers/tty/serial/8250/8250_mtk.c
+++ b/drivers/tty/serial/8250/8250_mtk.c
@@ -16,7 +16,7 @@
*/
#include <linux/clk.h>
#include <linux/io.h>
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
@@ -245,23 +245,6 @@ static int mtk8250_probe(struct platform_device *pdev)
return 0;
}

-static int mtk8250_remove(struct platform_device *pdev)
-{
- struct mtk8250_data *data = platform_get_drvdata(pdev);
-
- pm_runtime_get_sync(&pdev->dev);
-
- serial8250_unregister_port(data->line);
-
- pm_runtime_disable(&pdev->dev);
- pm_runtime_put_noidle(&pdev->dev);
-
- if (!pm_runtime_status_suspended(&pdev->dev))
- mtk8250_runtime_suspend(&pdev->dev);
-
- return 0;
-}
-
#ifdef CONFIG_PM_SLEEP
static int mtk8250_suspend(struct device *dev)
{
@@ -292,18 +275,18 @@ static const struct of_device_id mtk8250_of_match[] = {
{ .compatible = "mediatek,mt6577-uart" },
{ /* Sentinel */ }
};
-MODULE_DEVICE_TABLE(of, mtk8250_of_match);

static struct platform_driver mtk8250_platform_driver = {
.driver = {
- .name = "mt6577-uart",
- .pm = &mtk8250_pm_ops,
- .of_match_table = mtk8250_of_match,
+ .name = "mt6577-uart",
+ .pm = &mtk8250_pm_ops,
+ .of_match_table = mtk8250_of_match,
+ .suppress_bind_attrs = true,
+
},
.probe = mtk8250_probe,
- .remove = mtk8250_remove,
};
-module_platform_driver(mtk8250_platform_driver);
+builtin_platform_driver(mtk8250_platform_driver);

#ifdef CONFIG_SERIAL_8250_CONSOLE
static int __init early_mtk8250_setup(struct earlycon_device *device,
@@ -319,7 +302,3 @@ static int __init early_mtk8250_setup(struct earlycon_device *device,

OF_EARLYCON_DECLARE(mtk8250, "mediatek,mt6577-uart", early_mtk8250_setup);
#endif
-
-MODULE_AUTHOR("Matthias Brugger");
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Mediatek 8250 serial port driver");
--
2.6.1

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