diff options
Diffstat (limited to 'drivers/dsp/syslink/notify_ducatidriver/notify_ducati.c')
| -rw-r--r-- | drivers/dsp/syslink/notify_ducatidriver/notify_ducati.c | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/drivers/dsp/syslink/notify_ducatidriver/notify_ducati.c b/drivers/dsp/syslink/notify_ducatidriver/notify_ducati.c index 413cae455eb3..860709f26430 100644 --- a/drivers/dsp/syslink/notify_ducatidriver/notify_ducati.c +++ b/drivers/dsp/syslink/notify_ducatidriver/notify_ducati.c @@ -941,7 +941,7 @@ int notify_ducatidrv_sendevent(struct notify_driver_object *handle, BUG_ON(handle == NULL); BUG_ON(handle->driver_object == NULL); - + dsb(); driver_object = (struct notify_ducatidrv_object *) handle->driver_object; @@ -970,9 +970,12 @@ int notify_ducatidrv_sendevent(struct notify_driver_object *handle, proc_ctrl[driver_object->other_id].reg_mask. enable_mask) != 1)) { status = -ENODEV; + printk(KERN_ERR "NOTIFY DRV: OTHER SIDE NOT READY TO" + "RECEIVE. %d\n", event_no); /* This may be used for polling till other-side is ready, so do not set failure reason.*/ } else { + dsb(); /* Enter critical section protection. */ if (mutex_lock_interruptible(notify_ducatidriver_state. gate_handle) != 0) @@ -1009,6 +1012,23 @@ int notify_ducatidrv_sendevent(struct notify_driver_object *handle, information to theremote processor */ status = omap_mbox_msg_send(ducati_mbox, payload); + i = 0; + while ((other_event_chart[event_no].flag + != DOWN) + && status == 0) { + /* Leave critical section protection + Create a window of opportunity + for other interrupts to be handled. + */ + i++; + if ((max_poll_count != (int) -1) + && (i == max_poll_count)) { + status = -EBUSY; + printk(KERN_ERR "NOTIFY-remote" + "not processed event %d\n", + event_no); + } + } } /* Leave critical section protection. */ mutex_unlock(notify_ducatidriver_state.gate_handle); @@ -1147,12 +1167,14 @@ static void notify_ducatidrv_isr_callback(void *ref_data, void* ntfy_msg) struct notify_shmdrv_eventreg *reg_chart; VOLATILE struct notify_shmdrv_proc_ctrl *proc_ctrl_ptr; int event_no; + dsb(); + /* Enter critical section protection. */ driver_obj = (struct notify_ducatidrv_object *) ref_data; proc_ctrl_ptr = &(driver_obj->ctrl_ptr->proc_ctrl[driver_obj->self_id]); reg_chart = driver_obj->reg_chart; self_event_chart = proc_ctrl_ptr->self_event_chart; - + dsb(); /* Execute the loop till no asserted event is found for one complete loop through all registered events @@ -1169,9 +1191,11 @@ static void notify_ducatidrv_isr_callback(void *ref_data, void* ntfy_msg) payload = self_event_chart[event_no]. payload; + dsb(); /* Acknowledge the event. */ payload = (int)ntfy_msg; self_event_chart[event_no].flag = DOWN; + dsb(); /*Call the callbacks associated with the event*/ temp = driver_obj-> event_list[event_no]. @@ -1212,6 +1236,7 @@ static void notify_ducatidrv_isr_callback(void *ref_data, void* ntfy_msg) } } while ((event_no != (int) -1) && (i < driver_obj->params.num_events)); + } /* |