NVMe: Schedule timeout for sync commands

Schedule a timeout on sync commands in case the command times out and
the device is not being polled for timeouts. This prevents device removal
from hanging forever if the device has stopped responding.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>

drivers/block/nvme-core.c

@@ -828,7 +828,7 @@ int nvme_submit_sync_cmd(struct nvme_queue *nvmeq, struct nvme_command *cmd,
 
 	set_current_state(TASK_KILLABLE);
 	nvme_submit_cmd(nvmeq, cmd);
-	schedule();
+	schedule_timeout(timeout);
 
 	if (cmdinfo.status == -EINTR) {
 		nvme_abort_command(nvmeq, cmdid);