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| author | Brian King <brking@linux.vnet.ibm.com> | 2010-06-17 13:56:00 -0500 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-07-27 12:03:46 -0500 |
| commit | 0f33ece5bc3d5a9567b65cfbc736e8f206ecfc7b (patch) | |
| tree | 4b271d2c1373e1882ecffa8f4baf247a9f578c15 /drivers/scsi/ibmvscsi/ibmvscsi.h | |
| parent | 06395193b20124663b83b2894da827aec7e9d920 (diff) | |
| download | linux-0f33ece5bc3d5a9567b65cfbc736e8f206ecfc7b.tar.bz2 | |
[SCSI] ibmvscsi: Fix softlockup on resume
This fixes a softlockup seen on resume. During resume, the CRQ
must be reenabled. However, the H_ENABLE_CRQ hcall used to do
this may return H_BUSY or H_LONG_BUSY. When this happens, the
caller is expected to retry later. This patch changes a simple
loop, which was causing the softlockup, to a loop at task level
which sleeps between retries rather than simply spinning.
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/ibmvscsi/ibmvscsi.h')
| -rw-r--r-- | drivers/scsi/ibmvscsi/ibmvscsi.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.h b/drivers/scsi/ibmvscsi/ibmvscsi.h index 9cb7c6a773e1..02197a2b22b9 100644 --- a/drivers/scsi/ibmvscsi/ibmvscsi.h +++ b/drivers/scsi/ibmvscsi/ibmvscsi.h @@ -91,12 +91,16 @@ struct event_pool { struct ibmvscsi_host_data { atomic_t request_limit; int client_migrated; + int reset_crq; + int reenable_crq; struct device *dev; struct event_pool pool; struct crq_queue queue; struct tasklet_struct srp_task; struct list_head sent; struct Scsi_Host *host; + struct task_struct *work_thread; + wait_queue_head_t work_wait_q; struct mad_adapter_info_data madapter_info; struct capabilities caps; dma_addr_t caps_addr; |