From 9a32bb39d6a48d435135695763e5e4a06652eeda Mon Sep 17 00:00:00 2001 From: Alexey Khoroshilov Date: Sun, 2 Sep 2012 00:31:58 +0400 Subject: [PATCH] ppdev: ppdev_init: do not return zero in case of failure Error handling of parport_register_driver() in ppdev_init() is broken because it deallocates all resources but still returns zero. Currently parport_register_driver() always succeeds. Nevertheless it is worth to fix the issue. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov Signed-off-by: Greg Kroah-Hartman --- drivers/char/ppdev.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/char/ppdev.c b/drivers/char/ppdev.c index 3fcf80ff12f2..d0d824ebf2c1 100644 --- a/drivers/char/ppdev.c +++ b/drivers/char/ppdev.c @@ -783,7 +783,8 @@ static int __init ppdev_init (void) err = PTR_ERR(ppdev_class); goto out_chrdev; } - if (parport_register_driver(&pp_driver)) { + err = parport_register_driver(&pp_driver); + if (err < 0) { printk (KERN_WARNING CHRDEV ": unable to register with parport\n"); goto out_class; } -- 2.20.1