firewire: Convert OHCI driver to use standard goto unwinding for error handling.
Signed-off-by: Kristian Hoegsberg <krh@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
diff --git a/drivers/firewire/fw-ohci.c b/drivers/firewire/fw-ohci.c
index 5833ce1..1f5c704 100644
--- a/drivers/firewire/fw-ohci.c
+++ b/drivers/firewire/fw-ohci.c
@@ -1715,44 +1715,13 @@
return -EBUSY;
}
-enum {
- CLEANUP_SELF_ID,
- CLEANUP_REGISTERS,
- CLEANUP_IOMEM,
- CLEANUP_DISABLE,
- CLEANUP_PUT_CARD,
-};
-
-static int cleanup(struct fw_ohci *ohci, int stage, int code)
-{
- struct pci_dev *dev = to_pci_dev(ohci->card.device);
-
- switch (stage) {
- case CLEANUP_SELF_ID:
- dma_free_coherent(ohci->card.device, SELF_ID_BUF_SIZE,
- ohci->self_id_cpu, ohci->self_id_bus);
- case CLEANUP_REGISTERS:
- kfree(ohci->it_context_list);
- kfree(ohci->ir_context_list);
- pci_iounmap(dev, ohci->registers);
- case CLEANUP_IOMEM:
- pci_release_region(dev, 0);
- case CLEANUP_DISABLE:
- pci_disable_device(dev);
- case CLEANUP_PUT_CARD:
- fw_card_put(&ohci->card);
- }
-
- return code;
-}
-
static int __devinit
pci_probe(struct pci_dev *dev, const struct pci_device_id *ent)
{
struct fw_ohci *ohci;
u32 bus_options, max_receive, link_speed;
u64 guid;
- int error_code;
+ int err;
size_t size;
ohci = kzalloc(sizeof(*ohci), GFP_KERNEL);
@@ -1763,9 +1732,10 @@
fw_card_initialize(&ohci->card, &ohci_driver, &dev->dev);
- if (pci_enable_device(dev)) {
+ err = pci_enable_device(dev);
+ if (err) {
fw_error("Failed to enable OHCI hardware.\n");
- return cleanup(ohci, CLEANUP_PUT_CARD, -ENODEV);
+ goto fail_put_card;
}
pci_set_master(dev);
@@ -1777,20 +1747,23 @@
tasklet_init(&ohci->bus_reset_tasklet,
bus_reset_tasklet, (unsigned long)ohci);
- if (pci_request_region(dev, 0, ohci_driver_name)) {
+ err = pci_request_region(dev, 0, ohci_driver_name);
+ if (err) {
fw_error("MMIO resource unavailable\n");
- return cleanup(ohci, CLEANUP_DISABLE, -EBUSY);
+ goto fail_disable;
}
ohci->registers = pci_iomap(dev, 0, OHCI1394_REGISTER_SIZE);
if (ohci->registers == NULL) {
fw_error("Failed to remap registers\n");
- return cleanup(ohci, CLEANUP_IOMEM, -ENXIO);
+ err = -ENXIO;
+ goto fail_iomem;
}
if (software_reset(ohci)) {
fw_error("Failed to reset ohci card.\n");
- return cleanup(ohci, CLEANUP_REGISTERS, -EBUSY);
+ err = -EBUSY;
+ goto fail_registers;
}
/*
@@ -1845,7 +1818,8 @@
if (ohci->it_context_list == NULL || ohci->ir_context_list == NULL) {
fw_error("Out of memory for it/ir contexts.\n");
- return cleanup(ohci, CLEANUP_REGISTERS, -ENOMEM);
+ err = -ENOMEM;
+ goto fail_registers;
}
/* self-id dma buffer allocation */
@@ -1855,7 +1829,8 @@
GFP_KERNEL);
if (ohci->self_id_cpu == NULL) {
fw_error("Out of memory for self ID buffer.\n");
- return cleanup(ohci, CLEANUP_REGISTERS, -ENOMEM);
+ err = -ENOMEM;
+ goto fail_registers;
}
reg_write(ohci, OHCI1394_SelfIDBuffer, ohci->self_id_bus);
@@ -1876,15 +1851,31 @@
guid = ((u64) reg_read(ohci, OHCI1394_GUIDHi) << 32) |
reg_read(ohci, OHCI1394_GUIDLo);
- error_code = fw_card_add(&ohci->card, max_receive, link_speed, guid);
- if (error_code < 0)
- return cleanup(ohci, CLEANUP_SELF_ID, error_code);
+ err = fw_card_add(&ohci->card, max_receive, link_speed, guid);
+ if (err < 0)
+ goto fail_self_id;
ohci->version = reg_read(ohci, OHCI1394_Version) & 0x00ff00ff;
fw_notify("Added fw-ohci device %s, OHCI version %x.%x\n",
dev->dev.bus_id, ohci->version >> 16, ohci->version & 0xff);
return 0;
+
+ fail_self_id:
+ dma_free_coherent(ohci->card.device, SELF_ID_BUF_SIZE,
+ ohci->self_id_cpu, ohci->self_id_bus);
+ fail_registers:
+ kfree(ohci->it_context_list);
+ kfree(ohci->ir_context_list);
+ pci_iounmap(dev, ohci->registers);
+ fail_iomem:
+ pci_release_region(dev, 0);
+ fail_disable:
+ pci_disable_device(dev);
+ fail_put_card:
+ fw_card_put(&ohci->card);
+
+ return err;
}
static void pci_remove(struct pci_dev *dev)
@@ -1903,7 +1894,14 @@
software_reset(ohci);
free_irq(dev->irq, ohci);
- cleanup(ohci, CLEANUP_SELF_ID, 0);
+ dma_free_coherent(ohci->card.device, SELF_ID_BUF_SIZE,
+ ohci->self_id_cpu, ohci->self_id_bus);
+ kfree(ohci->it_context_list);
+ kfree(ohci->ir_context_list);
+ pci_iounmap(dev, ohci->registers);
+ pci_release_region(dev, 0);
+ pci_disable_device(dev);
+ fw_card_put(&ohci->card);
fw_notify("Removed fw-ohci device.\n");
}