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pcmcia: vrc4173_cardu: Fix error path for pci_release_regions and pci_disable_device 

- pci_release_regions called during return error path.
- pci_disable_device called for cases where earlier it was enabled.
- code duplication avoided/reduced by adding resource release at goto statements.

Signed-off-by: Rahul Ruikar <rahul.ruikar@gmail.com>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
This commit is contained in:
Rahul Ruikar 2010-09-26 22:20:30 +05:30 committed by Dominik Brodowski
parent 1c4a77bf54
commit 1ab488de54
1 changed files with 39 additions and 19 deletions
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58
drivers/pcmcia/vrc4173_cardu.c
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@ -461,7 +461,7 @@ static int __devinit vrc4173_cardu_probe(struct pci_dev *dev,
{
vrc4173_socket_t *socket;
unsigned long start, len, flags;
int slot, err;
int slot, err, ret;
slot = vrc4173_cardu_slots++;
socket = &cardu_sockets[slot];
@ -474,43 +474,63 @@ static int __devinit vrc4173_cardu_probe(struct pci_dev *dev,
return err;
start = pci_resource_start(dev, 0);
if (start == 0)
return -ENODEV;
if (start == 0) {
ret = -ENODEV;
goto disable;
}
len = pci_resource_len(dev, 0);
if (len == 0)
return -ENODEV;
if (len == 0) {
ret = -ENODEV;
goto disable;
}
if (((flags = pci_resource_flags(dev, 0)) & IORESOURCE_MEM) == 0)
return -EBUSY;
flags = pci_resource_flags(dev, 0);
if ((flags & IORESOURCE_MEM) == 0) {
ret = -EBUSY;
goto disable;
}
if ((err = pci_request_regions(dev, socket->name)) < 0)
return err;
err = pci_request_regions(dev, socket->name);
if (err < 0) {
ret = err;
goto disable;
}
socket->base = ioremap(start, len);
if (socket->base == NULL)
return -ENODEV;
if (socket->base == NULL) {
ret = -ENODEV;
goto release;
}
socket->dev = dev;
socket->pcmcia_socket = pcmcia_register_socket(slot, &cardu_operations, 1);
if (socket->pcmcia_socket == NULL) {
iounmap(socket->base);
socket->base = NULL;
return -ENOMEM;
ret = -ENOMEM;
goto unmap;
}
if (request_irq(dev->irq, cardu_interrupt, IRQF_SHARED, socket->name, socket) < 0) {
pcmcia_unregister_socket(socket->pcmcia_socket);
socket->pcmcia_socket = NULL;
iounmap(socket->base);
socket->base = NULL;
return -EBUSY;
ret = -EBUSY;
goto unregister;
}
printk(KERN_INFO "%s at %#08lx, IRQ %d\n", socket->name, start, dev->irq);
return 0;
unregister:
pcmcia_unregister_socket(socket->pcmcia_socket);
socket->pcmcia_socket = NULL;
unmap:
iounmap(socket->base);
socket->base = NULL;
release:
pci_release_regions(dev);
disable:
pci_disable_device(dev);
return ret;
}
static int __devinit vrc4173_cardu_setup(char *options)