Changeset 5e73815 in mainline

Timestamp:

2009-07-28T13:28:54Z (15 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

ba0aa6f

Parents:

6ac14a70

Message:

Interrupts should be disabled when acquiring answerbox's irq_lock.

File:

• kernel/generic/src/ipc/event.c (modified) (1 diff)

kernel/generic/src/ipc/event.c

@@ -141 +141 @@
                         IPC_SET_ARG5(call->data, a5);
                         
+                        ipl_t ipl = interrupts_disable();
                         spinlock_lock(&events[evno].answerbox->irq_lock);
                         list_append(&call->link, &events[evno].answerbox->irq_notifs);
                         spinlock_unlock(&events[evno].answerbox->irq_lock);
+                        interrupts_restore(ipl);
                         
                         waitq_wakeup(&events[evno].answerbox->wq, WAKEUP_FIRST);