[PATCH 3/5] drivers/tty/serial: make serial/atmel_serial.c explicitly non-modular

From: Paul Gortmaker
Date: Sun Oct 18 2015 - 18:21:51 EST


The Kconfig currently controlling compilation of this code is:

drivers/tty/serial/Kconfig:config SERIAL_ATMEL
drivers/tty/serial/Kconfig: bool "AT91 / AT32 on-chip 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_init translates to device_initcall in the non-modular
case, the init ordering remains unchanged with this commit.

We don't replace module.h with init.h since the file already has that.

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

Cc: Nicolas Ferre <nicolas.ferre@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Jiri Slaby <jslaby@xxxxxxxx>
Cc: linux-serial@xxxxxxxxxxxxxxx
Signed-off-by: Paul Gortmaker <paul.gortmaker@xxxxxxxxxxxxx>
---
drivers/tty/serial/atmel_serial.c | 45 ++++-----------------------------------
1 file changed, 4 insertions(+), 41 deletions(-)

diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index 94294558943c..d19a1e931529 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -22,7 +22,6 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
-#include <linux/module.h>
#include <linux/tty.h>
#include <linux/ioport.h>
#include <linux/slab.h>
@@ -2866,37 +2865,14 @@ err:
return ret;
}

-static int atmel_serial_remove(struct platform_device *pdev)
-{
- struct uart_port *port = platform_get_drvdata(pdev);
- struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
- int ret = 0;
-
- tasklet_kill(&atmel_port->tasklet);
-
- device_init_wakeup(&pdev->dev, 0);
-
- ret = uart_remove_one_port(&atmel_uart, port);
-
- kfree(atmel_port->rx_ring.buf);
-
- /* "port" is allocated statically, so we shouldn't free it */
-
- clear_bit(port->line, atmel_ports_in_use);
-
- clk_put(atmel_port->clk);
-
- return ret;
-}
-
static struct platform_driver atmel_serial_driver = {
.probe = atmel_serial_probe,
- .remove = atmel_serial_remove,
.suspend = atmel_serial_suspend,
.resume = atmel_serial_resume,
.driver = {
- .name = "atmel_usart",
- .of_match_table = of_match_ptr(atmel_serial_dt_ids),
+ .name = "atmel_usart",
+ .of_match_table = of_match_ptr(atmel_serial_dt_ids),
+ .suppress_bind_attrs = true,
},
};

@@ -2914,17 +2890,4 @@ static int __init atmel_serial_init(void)

return ret;
}
-
-static void __exit atmel_serial_exit(void)
-{
- platform_driver_unregister(&atmel_serial_driver);
- uart_unregister_driver(&atmel_uart);
-}
-
-module_init(atmel_serial_init);
-module_exit(atmel_serial_exit);
-
-MODULE_AUTHOR("Rick Bronson");
-MODULE_DESCRIPTION("Atmel AT91 / AT32 serial port driver");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:atmel_usart");
+device_initcall(atmel_serial_init);
--
2.6.1

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