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TTY: let alloc_tty_driver deduce the owner automatically

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Like the rest of the kernel, make a stub from alloc_tty_driver which
calls __alloc_tty_driver with proper owner. This will save us one more
assignment on the driver side.

Also this fixes some drivers which didn't set the owner. This allowed
user to remove the module from the system even though a tty from the
driver is still open.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby
2012-03-05 14:51:50 +01:00
committed by Greg Kroah-Hartman
parent a8fbc974c3
commit 1a54a76d51
2 changed files with 7 additions and 3 deletions
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5
drivers/tty/tty_io.c
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@@ -3049,7 +3049,7 @@ void tty_unregister_device(struct tty_driver *driver, unsigned index)
}
EXPORT_SYMBOL(tty_unregister_device);
struct tty_driver *alloc_tty_driver(int lines)
struct tty_driver *__alloc_tty_driver(int lines, struct module *owner)
{
struct tty_driver *driver;
@@ -3058,11 +3058,12 @@ struct tty_driver *alloc_tty_driver(int lines)
kref_init(&driver->kref);
driver->magic = TTY_DRIVER_MAGIC;
driver->num = lines;
driver->owner = owner;
/* later we'll move allocation of tables here */
}
return driver;
}
EXPORT_SYMBOL(alloc_tty_driver);
EXPORT_SYMBOL(__alloc_tty_driver);
static void destruct_tty_driver(struct kref *kref)
{