drivers/tty/serial: make 8250/8250_mtk.c explicitly non-modular

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: Jiri Slaby <jslaby@suse.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: linux-serial@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-mediatek@lists.infradead.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/8250/8250_mtk.c b/drivers/tty/serial/8250/8250_mtk.c
index 78883ca64dddebd7fdf01adb184bcc1559e99fc1..0e590b233f03b10ba586cc7bebc76bfc23a2a673 100644 (file)
--- 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");