From: Bart Van Assche <bart.vanassche@sandisk.com>
Date: Tue, 23 May 2017 16:48:24 -0700
Subject: target: Fix transport_init_se_cmd()
Git-commit: f2b72d6a8eed0eb02e6346886514a27df1efe827
Patch-mainline: v4.13-rc1
References: fate#323946

Avoid that aborting a command before it has been submitted onto
a workqueue triggers the following warning:

INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 3 PID: 46 Comm: kworker/u8:1 Not tainted 4.12.0-rc2-dbg+ #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.0.0-prebuilt.qemu-project.org 04/01/2014
Workqueue: tmr-iblock target_tmr_work [target_core_mod]
Call Trace:
 dump_stack+0x86/0xcf
 register_lock_class+0xe8/0x570
 __lock_acquire+0xa1/0x11d0
 lock_acquire+0x59/0x80
 flush_work+0x42/0x2b0
 __cancel_work_timer+0x10c/0x180
 cancel_work_sync+0xb/0x10
 core_tmr_lun_reset+0x352/0x740 [target_core_mod]
 target_tmr_work+0xd6/0x130 [target_core_mod]
 process_one_work+0x1ca/0x3f0
 worker_thread+0x49/0x3b0
 kthread+0x109/0x140
 ret_from_fork+0x31/0x40

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.com>
Cc: David Disseldorp <ddiss@suse.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Acked-by: Lee Duncan <lduncan@suse.com>
---
 drivers/target/target_core_transport.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index e045803921f8..d601616b9f12 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -1239,6 +1239,7 @@ void transport_init_se_cmd(
 	init_completion(&cmd->t_transport_stop_comp);
 	init_completion(&cmd->cmd_wait_comp);
 	spin_lock_init(&cmd->t_state_lock);
+	INIT_WORK(&cmd->work, NULL);
 	kref_init(&cmd->cmd_kref);
 
 	cmd->se_tfo = tfo;