diff options
| author | Wen Xiong <wenxiong@linux.vnet.ibm.com> | 2018-09-20 19:32:12 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-10-20 09:48:51 +0200 |
| commit | b6b5bc245dc23cfa6dcbf0bb1e13b606066471af (patch) | |
| tree | 595567037ff566a2034e278918962d4fbc170961 /drivers/scsi/ipr.h | |
| parent | 26377fe2f7b00993c3f6bb5d95cff81385c72d12 (diff) | |
scsi: ipr: System hung while dlpar adding primary ipr adapter back
[ Upstream commit 318ddb34b2052f838aa243d07173e2badf3e630e ]
While dlpar adding primary ipr adapter back, driver goes through adapter
initialization then schedule ipr_worker_thread to start te disk scan by
dropping the host lock, calling scsi_add_device. Then get the adapter reset
request again, so driver does scsi_block_requests, this will cause the
scsi_add_device get hung until we unblock. But we can't run ipr_worker_thread
to do the unblock because its stuck in scsi_add_device.
This patch fixes the issue.
[mkp: typo and whitespace fixes]
Signed-off-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/scsi/ipr.h')
| -rw-r--r-- | drivers/scsi/ipr.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h index c7f0e9e3cd7d..085e6c90f9e6 100644 --- a/drivers/scsi/ipr.h +++ b/drivers/scsi/ipr.h @@ -1568,6 +1568,7 @@ struct ipr_ioa_cfg { u8 saved_mode_page_len; struct work_struct work_q; + struct work_struct scsi_add_work_q; struct workqueue_struct *reset_work_q; wait_queue_head_t reset_wait_q; |