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ttyprintk: Allow built as a module

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The driver is well written to be used as a module, just the exit call
is missing.

Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Takashi Iwai
2014-04-02 14:45:22 +02:00
committed by Greg Kroah-Hartman
parent 7d1c2858c4
commit b24313a82c
2 changed files with 13 additions and 2 deletions
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2
drivers/char/Kconfig
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@@ -40,7 +40,7 @@ config SGI_MBCS
source "drivers/tty/serial/Kconfig" source "drivers/tty/serial/Kconfig"
config TTY_PRINTK config TTY_PRINTK
bool "TTY driver to output user messages via printk" tristate "TTY driver to output user messages via printk"
depends on EXPERT && TTY depends on EXPERT && TTY
default n default n
---help--- ---help---

13
drivers/char/ttyprintk.c
View File

@@ -17,7 +17,7 @@
#include <linux/device.h> #include <linux/device.h>
#include <linux/serial.h> #include <linux/serial.h>
#include <linux/tty.h> #include <linux/tty.h>
#include <linux/export.h> #include <linux/module.h>
struct ttyprintk_port { struct ttyprintk_port {
struct tty_port port; struct tty_port port;
@@ -214,4 +214,15 @@ error:
tty_port_destroy(&tpk_port.port); tty_port_destroy(&tpk_port.port);
return ret; return ret;
} }
static void __exit ttyprintk_exit(void)
{
tty_unregister_driver(ttyprintk_driver);
put_tty_driver(ttyprintk_driver);
tty_port_destroy(&tpk_port.port);
}
device_initcall(ttyprintk_init); device_initcall(ttyprintk_init);
module_exit(ttyprintk_exit);
MODULE_LICENSE("GPL");