From f10bb2544bab75b3e8df15a7b51a833c78cbd77f Mon Sep 17 00:00:00 2001 From: Akinobu Mita Date: Tue, 19 Dec 2006 12:56:09 -0800 Subject: [PATCH] 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 Signed-off-by: Andrew Morton Signed-off-by: Len Brown --- drivers/acpi/pci_root.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index 0984a1ee24..c92c144d6c 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -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; - break; + if (*pptr == driver) + break; + pptr = &(*pptr)->next; } + BUG_ON(!*pptr); + *pptr = (*pptr)->next; if (!driver->remove) return; -- 2.39.5