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Subject[PATCH 23/24] TTY: add tty_port_register_device helper
Date
This will automatically assign tty_port to tty_driver's port array for
later recall in tty_init_dev. This is intended to be called instead of
tty_register_device.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
drivers/tty/tty_port.c | 9 +++++++++
include/linux/tty.h | 3 +++
2 files changed, 12 insertions(+)
diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c
index 1ac8abf..4e9d2b2 100644
--- a/drivers/tty/tty_port.c
+++ b/drivers/tty/tty_port.c
@@ -33,6 +33,15 @@ void tty_port_init(struct tty_port *port)
}
EXPORT_SYMBOL(tty_port_init);

+struct device *tty_port_register_device(struct tty_port *port,
+ struct tty_driver *driver, unsigned index,
+ struct device *device)
+{
+ driver->ports[index] = port;
+ return tty_register_device(driver, index, device);
+}
+EXPORT_SYMBOL_GPL(tty_port_register_device);
+
int tty_port_alloc_xmit_buf(struct tty_port *port)
{
/* We may sleep in get_zeroed_page() */
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 45ef71d..40b18d7 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -497,6 +497,9 @@ extern int tty_write_lock(struct tty_struct *tty, int ndelay);
#define tty_is_writelocked(tty) (mutex_is_locked(&tty->atomic_write_lock))

extern void tty_port_init(struct tty_port *port);
+extern struct device *tty_port_register_device(struct tty_port *port,
+ struct tty_driver *driver, unsigned index,
+ struct device *device);
extern int tty_port_alloc_xmit_buf(struct tty_port *port);
extern void tty_port_free_xmit_buf(struct tty_port *port);
extern void tty_port_put(struct tty_port *port);
--
1.7.10.3



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