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path: root/drivers/tty/tty_io.c
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Diffstat (limited to 'drivers/tty/tty_io.c')
-rw-r--r--drivers/tty/tty_io.c37
1 files changed, 13 insertions, 24 deletions
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index 714320b..8fbad34 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -157,20 +157,6 @@ static void __proc_set_tty(struct task_struct *tsk, struct tty_struct *tty);
static void proc_set_tty(struct task_struct *tsk, struct tty_struct *tty);
/**
- * alloc_tty_struct - allocate a tty object
- *
- * Return a new empty tty structure. The data fields have not
- * been initialized in any way but has been zeroed
- *
- * Locking: none
- */
-
-struct tty_struct *alloc_tty_struct(void)
-{
- return kzalloc(sizeof(struct tty_struct), GFP_KERNEL);
-}
-
-/**
* free_tty_struct - free a disused tty
* @tty: tty struct to free
*
@@ -1455,12 +1441,11 @@ struct tty_struct *tty_init_dev(struct tty_driver *driver, int idx)
if (!try_module_get(driver->owner))
return ERR_PTR(-ENODEV);
- tty = alloc_tty_struct();
+ tty = alloc_tty_struct(driver, idx);
if (!tty) {
retval = -ENOMEM;
goto err_module_put;
}
- initialize_tty_struct(tty, driver, idx);
tty_lock(tty);
retval = tty_driver_install_tty(driver, tty);
@@ -3003,19 +2988,21 @@ static struct device *tty_get_device(struct tty_struct *tty)
/**
- * initialize_tty_struct
- * @tty: tty to initialize
+ * alloc_tty_struct
*
- * This subroutine initializes a tty structure that has been newly
- * allocated.
+ * This subroutine allocates and initializes a tty structure.
*
- * Locking: none - tty in question must not be exposed at this point
+ * Locking: none - tty in question is not exposed at this point
*/
-void initialize_tty_struct(struct tty_struct *tty,
- struct tty_driver *driver, int idx)
+struct tty_struct *alloc_tty_struct(struct tty_driver *driver, int idx)
{
- memset(tty, 0, sizeof(struct tty_struct));
+ struct tty_struct *tty;
+
+ tty = kzalloc(sizeof(*tty), GFP_KERNEL);
+ if (!tty)
+ return NULL;
+
kref_init(&tty->kref);
tty->magic = TTY_MAGIC;
tty_ldisc_init(tty);
@@ -3039,6 +3026,8 @@ void initialize_tty_struct(struct tty_struct *tty,
tty->index = idx;
tty_line_name(driver, idx, tty->name);
tty->dev = tty_get_device(tty);
+
+ return tty;
}
/**
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