diff options
| author | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2010-07-22 09:56:38 (GMT) |
|---|---|---|
| committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2010-07-27 09:04:10 (GMT) |
| commit | b6d9c125e6610591c04ca9045f641e35ce1a9226 (patch) | |
| tree | 416672c79a3ee4b0764561ba5ebcf9ed3ba4d5c7 /drivers | |
| parent | 165476671f731b4c3d6cf401d0e1886f4a4f4a8e (diff) | |
| download | linux-b6d9c125e6610591c04ca9045f641e35ce1a9226.tar.xz | |
firewire: nosy: handle errors in device probe
and add a missing pci_disable_device() to device shutdown.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/firewire/nosy.c | 40 |
1 files changed, 33 insertions, 7 deletions
diff --git a/drivers/firewire/nosy.c b/drivers/firewire/nosy.c index a241b62..ccf9c46 100644 --- a/drivers/firewire/nosy.c +++ b/drivers/firewire/nosy.c @@ -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 = { |