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authorVasu Dev <vasu.dev@intel.com>2011-10-28 11:34:17 -0700
committerJames Bottomley <JBottomley@Parallels.com>2011-10-31 13:27:19 +0400
commitb6e3c84034b93e6acc895711f74730e235dfe9d2 (patch)
treed4f80cd98ba82f5900a1f21ff9b623d86ed12c8f /drivers/scsi/libfc/fc_exch.c
parent14fc315fa30d128760c7edeff56530142576cd2e (diff)
[SCSI] libfc: avoid exchanges collision during lport reset
Currently timer delay is large and is using msleep to avoid avoid exchanges collision across lport reset, so instead do this by initializing exches pool indexes during reset also. Signed-off-by: Vasu Dev <vasu.dev@intel.com> Tested-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com> Signed-off-by: Yi Zou <yi.zou@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/libfc/fc_exch.c')
-rw-r--r--drivers/scsi/libfc/fc_exch.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/scsi/libfc/fc_exch.c b/drivers/scsi/libfc/fc_exch.c
index 81235f36adc..1b22130035d 100644
--- a/drivers/scsi/libfc/fc_exch.c
+++ b/drivers/scsi/libfc/fc_exch.c
@@ -1793,6 +1793,9 @@ restart:
goto restart;
}
}
+ pool->next_index = 0;
+ pool->left = FC_XID_UNKNOWN;
+ pool->right = FC_XID_UNKNOWN;
spin_unlock_bh(&pool->lock);
}
@@ -2281,6 +2284,7 @@ struct fc_exch_mgr *fc_exch_mgr_alloc(struct fc_lport *lport,
goto free_mempool;
for_each_possible_cpu(cpu) {
pool = per_cpu_ptr(mp->pool, cpu);
+ pool->next_index = 0;
pool->left = FC_XID_UNKNOWN;
pool->right = FC_XID_UNKNOWN;
spin_lock_init(&pool->lock);