usb: Make usb_hcd_pci_probe labels more descriptive.
Make the labels for the goto statements in usb_hcd_pci_probe()
describe the cleanup they do, rather than being numbered err[1-4].
This makes it easier to add error handling later.
The error handling for this function looks a little fishy, since
set_hs_companion() isn't called until the very end of the function, and
clear_hs_companion() is called if this function fails earlier than that.
But it should be harmless to clear a NULL pointer, so leave the error
handling as-is.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c
index d370885..88d9109 100644
--- a/drivers/usb/core/hcd-pci.c
+++ b/drivers/usb/core/hcd-pci.c
@@ -192,13 +192,13 @@
"Found HC with no IRQ. Check BIOS/PCI %s setup!\n",
pci_name(dev));
retval = -ENODEV;
- goto err1;
+ goto disable_pci;
}
hcd = usb_create_hcd(driver, &dev->dev, pci_name(dev));
if (!hcd) {
retval = -ENOMEM;
- goto err1;
+ goto disable_pci;
}
if (driver->flags & HCD_MEMORY) {
@@ -209,13 +209,13 @@
driver->description)) {
dev_dbg(&dev->dev, "controller already in use\n");
retval = -EBUSY;
- goto err2;
+ goto clear_companion;
}
hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
if (hcd->regs == NULL) {
dev_dbg(&dev->dev, "error mapping memory\n");
retval = -EFAULT;
- goto err3;
+ goto release_mem_region;
}
} else {
@@ -236,7 +236,7 @@
if (region == PCI_ROM_RESOURCE) {
dev_dbg(&dev->dev, "no i/o regions available\n");
retval = -EBUSY;
- goto err2;
+ goto clear_companion;
}
}
@@ -244,24 +244,24 @@
retval = usb_add_hcd(hcd, dev->irq, IRQF_DISABLED | IRQF_SHARED);
if (retval != 0)
- goto err4;
+ goto unmap_registers;
set_hs_companion(dev, hcd);
if (pci_dev_run_wake(dev))
pm_runtime_put_noidle(&dev->dev);
return retval;
- err4:
+unmap_registers:
if (driver->flags & HCD_MEMORY) {
iounmap(hcd->regs);
- err3:
+release_mem_region:
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
} else
release_region(hcd->rsrc_start, hcd->rsrc_len);
- err2:
+clear_companion:
clear_hs_companion(dev, hcd);
usb_put_hcd(hcd);
- err1:
+disable_pci:
pci_disable_device(dev);
dev_err(&dev->dev, "init %s fail, %d\n", pci_name(dev), retval);
return retval;
