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ACPICA: Fixed possible corruption of global GPE list

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Fixed a problem in acpi_ev_delete_gpe_xrupt where the global interrupt
list could be corrupted if the interrupt being removed was at
the head of the list. Reported by Linn Crosetto.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Bob Moore 2007-04-03 20:00:29 -04:00 committed by Len Brown
parent a0a3f6c69b
commit e0b91050f2
1 changed files with 4 additions and 0 deletions
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4
drivers/acpi/events/evgpeblk.c
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@ -586,6 +586,10 @@ acpi_ev_delete_gpe_xrupt(struct acpi_gpe_xrupt_info *gpe_xrupt)
flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
if (gpe_xrupt->previous) { if (gpe_xrupt->previous) {
gpe_xrupt->previous->next = gpe_xrupt->next; gpe_xrupt->previous->next = gpe_xrupt->next;
} else {
/* No previous, update list head */
acpi_gbl_gpe_xrupt_list_head = gpe_xrupt->next;
} }
if (gpe_xrupt->next) { if (gpe_xrupt->next) {