redonkable/remarkable-linux
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firewire: nosy: handle errors in device probe

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and add a missing pci_disable_device() to device shutdown.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Stefan Richter 2010-07-22 11:56:38 +02:00
parent 165476671f
commit b6d9c125e6
1 changed files with 33 additions and 7 deletions
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40
drivers/firewire/nosy.c
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@ -497,6 +497,7 @@ remove_card(struct pci_dev *dev)
lynx->rcv_buffer, lynx->rcv_buffer_bus);
iounmap(lynx->registers);
pci_disable_device(dev);
minors[lynx->misc.minor] = NULL;
misc_deregister(&lynx->misc);
@ -511,7 +512,7 @@ add_card(struct pci_dev *dev, const struct pci_device_id *unused)
{
struct pcilynx *lynx;
u32 p, end;
int i;
int ret, i;
if (pci_set_dma_mask(dev, 0xffffffff)) {
error("DMA address limits not supported "
@ -527,7 +528,8 @@ add_card(struct pci_dev *dev, const struct pci_device_id *unused)
lynx = kzalloc(sizeof *lynx, GFP_KERNEL);
if (lynx == NULL) {
error("Failed to allocate control structure memory\n");
return -ENOMEM;
ret = -ENOMEM;
goto fail_disable;
}
lynx->pci_device = dev;
pci_set_drvdata(dev, lynx);
@ -547,9 +549,9 @@ add_card(struct pci_dev *dev, const struct pci_device_id *unused)
if (lynx->rcv_start_pcl == NULL ||
lynx->rcv_pcl == NULL ||
lynx->rcv_buffer == NULL) {
/* FIXME: do proper error handling. */
error("Failed to allocate receive buffer\n");
return -ENOMEM;
ret = -ENOMEM;
goto fail_deallocate;
}
lynx->rcv_start_pcl->next = lynx->rcv_pcl_bus;
lynx->rcv_pcl->next = PCL_NEXT_INVALID;
@ -609,22 +611,46 @@ add_card(struct pci_dev *dev, const struct pci_device_id *unused)
if (request_irq(dev->irq, irq_handler, IRQF_SHARED,
driver_name, lynx)) {
error("Failed to allocate shared interrupt %d\n", dev->irq);
return -EIO;
ret = -EIO;
goto fail_deallocate;
}
lynx->misc.parent = &dev->dev;
lynx->misc.minor = MISC_DYNAMIC_MINOR;
lynx->misc.name = "nosy";
lynx->misc.fops = &nosy_ops;
if (misc_register(&lynx->misc)) {
ret = misc_register(&lynx->misc);
if (ret) {
error("Failed to register misc char device\n");
return -ENOMEM;
goto fail_free_irq;
}
minors[lynx->misc.minor] = lynx;
notify("Initialized PCILynx IEEE1394 card, irq=%d\n", dev->irq);
return 0;
fail_free_irq:
reg_write(lynx, PCI_INT_ENABLE, 0);
free_irq(lynx->pci_device->irq, lynx);
fail_deallocate:
if (lynx->rcv_start_pcl)
pci_free_consistent(lynx->pci_device, sizeof(struct pcl),
lynx->rcv_start_pcl, lynx->rcv_start_pcl_bus);
if (lynx->rcv_pcl)
pci_free_consistent(lynx->pci_device, sizeof(struct pcl),
lynx->rcv_pcl, lynx->rcv_pcl_bus);
if (lynx->rcv_buffer)
pci_free_consistent(lynx->pci_device, PAGE_SIZE,
lynx->rcv_buffer, lynx->rcv_buffer_bus);
iounmap(lynx->registers);
kfree(lynx);
fail_disable:
pci_disable_device(dev);
return ret;
}
static struct pci_device_id pci_table[] __devinitdata = {