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Input: mice - handle errors when registering input devices

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Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Dmitry Torokhov
2006-11-05 22:40:19 -05:00
parent 127278ce22
commit 721556150e
8 changed files with 154 additions and 60 deletions
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23
drivers/input/mouse/inport.c
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@@ -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)