diff options
Diffstat (limited to 'drivers/misc/mei/bus.c')
| -rw-r--r-- | drivers/misc/mei/bus.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c index 1dacc820bd7f..b1133739fb4b 100644 --- a/drivers/misc/mei/bus.c +++ b/drivers/misc/mei/bus.c @@ -74,6 +74,23 @@ ssize_t __mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length, goto out; } + while (cl->tx_cb_queued >= bus->tx_queue_limit) { + mutex_unlock(&bus->device_lock); + rets = wait_event_interruptible(cl->tx_wait, + cl->writing_state == MEI_WRITE_COMPLETE || + (!mei_cl_is_connected(cl))); + mutex_lock(&bus->device_lock); + if (rets) { + if (signal_pending(current)) + rets = -EINTR; + goto out; + } + if (!mei_cl_is_connected(cl)) { + rets = -ENODEV; + goto out; + } + } + cb = mei_cl_alloc_cb(cl, length, MEI_FOP_WRITE, NULL); if (!cb) { rets = -ENOMEM; |