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Commit 8766c815 authored by Sarah Sharp's avatar Sarah Sharp
Browse files

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: default avatarSarah Sharp <sarah.a.sharp@linux.intel.com>
parent b02d0ed6

drivers/usb/core/hcd-pci.c

+10 −10
Original line number Diff line number Diff line
@@ -192,13 +192,13 @@ int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) 
			"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 @@ int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) 
				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 @@ int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) 
		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 @@ int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) 


	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;