diff options
Diffstat (limited to 'drivers/input/mouse/inport.c')
| -rw-r--r-- | drivers/input/mouse/inport.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/drivers/input/mouse/inport.c b/drivers/input/mouse/inport.c index e1252fa9a107..13dd96785e39 100644 --- a/drivers/input/mouse/inport.c +++ b/drivers/input/mouse/inport.c @@ -135,6 +135,7 @@ static void inport_close(struct input_dev *dev) static int __init inport_init(void) { unsigned char a, b, c; + int err; if (!request_region(INPORT_BASE, INPORT_EXTENT, "inport")) { printk(KERN_ERR "inport.c: Can't allocate ports at %#x\n", INPORT_BASE); @@ -145,15 +146,16 @@ static int __init inport_init(void) b = inb(INPORT_SIGNATURE_PORT); c = inb(INPORT_SIGNATURE_PORT); if (a == b || a != c) { - release_region(INPORT_BASE, INPORT_EXTENT); printk(KERN_ERR "inport.c: Didn't find InPort mouse at %#x\n", INPORT_BASE); - return -ENODEV; + err = -ENODEV; + goto err_release_region; } - if (!(inport_dev = input_allocate_device())) { + inport_dev = input_allocate_device(); + if (!inport_dev) { printk(KERN_ERR "inport.c: Not enough memory for input device\n"); - release_region(INPORT_BASE, INPORT_EXTENT); - return -ENOMEM; + err = -ENOMEM; + goto err_release_region; } inport_dev->name = INPORT_NAME; @@ -174,9 +176,18 @@ static int __init inport_init(void) outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); outb(INPORT_MODE_BASE, INPORT_DATA_PORT); - input_register_device(inport_dev); + err = input_register_device(inport_dev); + if (err) + goto err_free_dev; return 0; + + err_free_dev: + input_free_device(inport_dev); + err_release_region: + release_region(INPORT_BASE, INPORT_EXTENT); + + return err; } static void __exit inport_exit(void) |