diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c index 05954f983125..3aa5cc4f8576 100644 --- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c +++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c @@ -406,22 +406,24 @@ vchiq_set_conn_state(VCHIQ_STATE_T *state, VCHIQ_CONNSTATE_T newstate) } static inline void -remote_event_create(REMOTE_EVENT_T *event) +remote_event_create(VCHIQ_STATE_T *state, REMOTE_EVENT_T *event) { event->armed = 0; /* Don't clear the 'fired' flag because it may already have been set ** by the other side. */ - sema_init(event->event, 0); + sema_init((struct semaphore *)((char *)state + event->event), 0); } static inline int -remote_event_wait(REMOTE_EVENT_T *event) +remote_event_wait(VCHIQ_STATE_T *state, REMOTE_EVENT_T *event) { if (!event->fired) { event->armed = 1; dsb(sy); if (!event->fired) { - if (down_interruptible(event->event) != 0) { + if (down_interruptible( + (struct semaphore *) + ((char *)state + event->event)) != 0) { event->armed = 0; return 0; } @@ -435,26 +437,26 @@ remote_event_wait(REMOTE_EVENT_T *event) } static inline void -remote_event_signal_local(REMOTE_EVENT_T *event) +remote_event_signal_local(VCHIQ_STATE_T *state, REMOTE_EVENT_T *event) { event->armed = 0; - up(event->event); + up((struct semaphore *)((char *)state + event->event)); } static inline void -remote_event_poll(REMOTE_EVENT_T *event) +remote_event_poll(VCHIQ_STATE_T *state, REMOTE_EVENT_T *event) { if (event->fired && event->armed) - remote_event_signal_local(event); + remote_event_signal_local(state, event); } void remote_event_pollall(VCHIQ_STATE_T *state) { - remote_event_poll(&state->local->sync_trigger); - remote_event_poll(&state->local->sync_release); - remote_event_poll(&state->local->trigger); - remote_event_poll(&state->local->recycle); + remote_event_poll(state, &state->local->sync_trigger); + remote_event_poll(state, &state->local->sync_release); + remote_event_poll(state, &state->local->trigger); + remote_event_poll(state, &state->local->recycle); } /* Round up message sizes so that any space at the end of a slot is always big @@ -535,7 +537,7 @@ request_poll(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service, int poll_type) wmb(); /* ... and ensure the slot handler runs. */ - remote_event_signal_local(&state->local->trigger); + remote_event_signal_local(state, &state->local->trigger); } /* Called from queue_message, by the slot handler and application threads, @@ -976,7 +978,7 @@ queue_message_sync(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service, (mutex_lock_interruptible(&state->sync_mutex) != 0)) return VCHIQ_RETRY; - remote_event_wait(&local->sync_release); + remote_event_wait(state, &local->sync_release); rmb(); @@ -1995,7 +1997,7 @@ slot_handler_func(void *v) while (1) { DEBUG_COUNT(SLOT_HANDLER_COUNT); DEBUG_TRACE(SLOT_HANDLER_LINE); - remote_event_wait(&local->trigger); + remote_event_wait(state, &local->trigger); rmb(); @@ -2084,7 +2086,7 @@ recycle_func(void *v) VCHIQ_SHARED_STATE_T *local = state->local; while (1) { - remote_event_wait(&local->recycle); + remote_event_wait(state, &local->recycle); process_free_queue(state); } @@ -2107,7 +2109,7 @@ sync_func(void *v) int type; unsigned int localport, remoteport; - remote_event_wait(&local->sync_trigger); + remote_event_wait(state, &local->sync_trigger); rmb(); @@ -2406,24 +2408,24 @@ vchiq_init_state(VCHIQ_STATE_T *state, VCHIQ_SLOT_ZERO_T *slot_zero, state->data_use_count = 0; state->data_quota = state->slot_queue_available - 1; - local->trigger.event = &state->trigger_event; - remote_event_create(&local->trigger); + local->trigger.event = offsetof(VCHIQ_STATE_T, trigger_event); + remote_event_create(state, &local->trigger); local->tx_pos = 0; - local->recycle.event = &state->recycle_event; - remote_event_create(&local->recycle); + local->recycle.event = offsetof(VCHIQ_STATE_T, recycle_event); + remote_event_create(state, &local->recycle); local->slot_queue_recycle = state->slot_queue_available; - local->sync_trigger.event = &state->sync_trigger_event; - remote_event_create(&local->sync_trigger); + local->sync_trigger.event = offsetof(VCHIQ_STATE_T, sync_trigger_event); + remote_event_create(state, &local->sync_trigger); - local->sync_release.event = &state->sync_release_event; - remote_event_create(&local->sync_release); + local->sync_release.event = offsetof(VCHIQ_STATE_T, sync_release_event); + remote_event_create(state, &local->sync_release); /* At start-of-day, the slot is empty and available */ ((VCHIQ_HEADER_T *)SLOT_DATA_FROM_INDEX(state, local->slot_sync))->msgid = VCHIQ_MSGID_PADDING; - remote_event_signal_local(&local->sync_release); + remote_event_signal_local(state, &local->sync_release); local->debug[DEBUG_ENTRIES] = DEBUG_MAX; diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.h b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.h index 9013bdbf242c..1c2b1b5b8cc9 100644 --- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.h +++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.h @@ -264,7 +264,8 @@ typedef struct vchiq_bulk_queue_struct { typedef struct remote_event_struct { int armed; int fired; - struct semaphore *event; + /* Contains offset from the beginning of the VCHIQ_STATE_T structure */ + u32 event; } REMOTE_EVENT_T; typedef struct opaque_platform_state_t *VCHIQ_PLATFORM_STATE_T;