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irq-server: Fix race condition on SMP systems

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This commit is contained in:
Sebastian Huber
2015-11-11 12:05:22 +01:00
parent 5c7bfcf82e
commit 610909fa85
1 changed files with 5 additions and 4 deletions
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9
c/src/lib/libbsp/shared/src/irq-server.c
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@@ -57,20 +57,21 @@ static unsigned bsp_interrupt_server_errors;
static void bsp_interrupt_server_trigger(void *arg)
{
rtems_interrupt_lock_context lock_context;
bsp_interrupt_server_entry *e = arg;
bsp_interrupt_vector_disable(e->vector);
if (rtems_chain_is_node_off_chain(&e->node)) {
rtems_interrupt_lock_context lock_context;
rtems_interrupt_lock_acquire(&bsp_interrupt_server_lock, &lock_context);
rtems_interrupt_lock_acquire(&bsp_interrupt_server_lock, &lock_context);
if (rtems_chain_is_node_off_chain(&e->node)) {
rtems_chain_append_unprotected(&bsp_interrupt_server_chain, &e->node);
rtems_interrupt_lock_release(&bsp_interrupt_server_lock, &lock_context);
} else {
++bsp_interrupt_server_errors;
}
rtems_interrupt_lock_release(&bsp_interrupt_server_lock, &lock_context);
rtems_event_system_send(bsp_interrupt_server_id, RTEMS_EVENT_SYSTEM_SERVER);
}