From 1cdcb6b43fda7424b7435dac8f80b2b5d8a48899 Mon Sep 17 00:00:00 2001 From: Hansjoerg Lipp Date: Sat, 22 Apr 2006 18:36:53 +0200 Subject: [PATCH] TTY: return class device pointer from tty_register_device() Let tty_register_device() return a pointer to the class device it creates. This allows registrants to add their own sysfs files under the class device node. Signed-off-by: Hansjoerg Lipp Signed-off-by: Tilman Schmidt Signed-off-by: Greg Kroah-Hartman --- drivers/char/tty_io.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c index a88b94a82b1..8b2a5996986 100644 --- a/drivers/char/tty_io.c +++ b/drivers/char/tty_io.c @@ -2961,12 +2961,14 @@ static struct class *tty_class; * This field is optional, if there is no known struct device for this * tty device it can be set to NULL safely. * + * Returns a pointer to the class device (or ERR_PTR(-EFOO) on error). + * * This call is required to be made to register an individual tty device if * the tty driver's flags have the TTY_DRIVER_NO_DEVFS bit set. If that * bit is not set, this function should not be called. */ -void tty_register_device(struct tty_driver *driver, unsigned index, - struct device *device) +struct class_device *tty_register_device(struct tty_driver *driver, + unsigned index, struct device *device) { char name[64]; dev_t dev = MKDEV(driver->major, driver->minor_start) + index; @@ -2974,7 +2976,7 @@ void tty_register_device(struct tty_driver *driver, unsigned index, if (index >= driver->num) { printk(KERN_ERR "Attempt to register invalid tty line number " " (%d).\n", index); - return; + return ERR_PTR(-EINVAL); } devfs_mk_cdev(dev, S_IFCHR | S_IRUSR | S_IWUSR, @@ -2984,7 +2986,8 @@ void tty_register_device(struct tty_driver *driver, unsigned index, pty_line_name(driver, index, name); else tty_line_name(driver, index, name); - class_device_create(tty_class, NULL, dev, device, "%s", name); + + return class_device_create(tty_class, NULL, dev, device, "%s", name); } /** -- cgit v1.2.3-70-g09d2