Commit f10bb254 authored Dec 19, 2006 by Akinobu Mita Committed by Len Brown Dec 20, 2006

ACPI: fix single linked list manipulation



Fix single linked list manipulation for sub_driver.  If the remving entry
is not on the head of the sub_driver list, it goes into infinate loop.

Though that infinite loop doesn't happen.  Because the only user of
acpi_pci_register_dirver() is acpiphp.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>

parent 9185cfa9

drivers/acpi/pci_root.c

+5 −4

Original line number	Diff line number	Diff line
		@@ -98,11 +98,12 @@ void acpi_pci_unregister_driver(struct acpi_pci_driver *driver)

		struct acpi_pci_driver **pptr = &sub_driver;
		while (*pptr) {
		if (*pptr != driver)
		continue;
		pptr = (pptr)->next;
		if (*pptr == driver)
		break;
		pptr = &(*pptr)->next;
		}
		BUG_ON(!*pptr);
		pptr = (pptr)->next;

		if (!driver->remove)
		return;