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| author | Bart Van Assche <bvanassche@acm.org> | 2019-02-26 16:35:26 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-20 09:16:03 +0200 |
| commit | 29b934dd5fa065b54ef87c407bc392000967f56c (patch) | |
| tree | 794ee2f7646e6f81507e5ae61ffd55179ce6d8e3 /drivers/scsi/scsi_lib.c | |
| parent | 38855a84d891d835eb91f96e6594f886b593bdc3 (diff) | |
| download | linux-stable-29b934dd5fa065b54ef87c407bc392000967f56c.tar.gz linux-stable-29b934dd5fa065b54ef87c407bc392000967f56c.tar.bz2 linux-stable-29b934dd5fa065b54ef87c407bc392000967f56c.zip | |
scsi: core: Avoid that system resume triggers a kernel warning
[ Upstream commit 388b4e6a00bb3097278ed1648ac5a1cb48c894e6 ]
scsi_device_quiesce() and scsi_device_resume() are called during
system-wide suspend and resume. scsi_device_quiesce() only succeeds for
SCSI devices that are in one of the RUNNING, OFFLINE or TRANSPORT_OFFLINE
states (see also scsi_set_device_state()). This patch avoids that the
following warning is triggered when resuming a system for which quiescing a
SCSI device failed:
WARNING: CPU: 2 PID: 11303 at drivers/scsi/scsi_lib.c:2600 scsi_device_resume+0x4f/0x58
CPU: 2 PID: 11303 Comm: kworker/u8:70 Not tainted 5.0.0-rc1+ #50
Hardware name: LENOVO 80E3/Lancer 5B2, BIOS A2CN45WW(V2.13) 08/04/2016
Workqueue: events_unbound async_run_entry_fn
Call Trace:
scsi_dev_type_resume+0x2e/0x60
async_run_entry_fn+0x32/0xd8
process_one_work+0x1f4/0x420
worker_thread+0x28/0x3c0
kthread+0x118/0x130
ret_from_fork+0x22/0x40
Cc: Przemek Socha <soprwa@gmail.com>
Reported-by: Przemek Socha <soprwa@gmail.com>
Fixes: 3a0a529971ec ("block, scsi: Make SCSI quiesce and resume work reliably") # v4.15
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/scsi/scsi_lib.c')
| -rw-r--r-- | drivers/scsi/scsi_lib.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 18e4289baf99..655790f30434 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -3095,7 +3095,6 @@ void scsi_device_resume(struct scsi_device *sdev) * device deleted during suspend) */ mutex_lock(&sdev->state_mutex); - WARN_ON_ONCE(!sdev->quiesced_by); sdev->quiesced_by = NULL; blk_clear_preempt_only(sdev->request_queue); if (sdev->sdev_state == SDEV_QUIESCE) |