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>
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 @@
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 @@
{
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 @@
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 @@
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 @@
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 = {