[PATCH 03/12] IB/srp: Remove an extraneous scsi_host_put() from an error path

Bart Van Assche
2015-04-30T08:57:36Z

Fix a scsi_get_host() / scsi_host_put() imbalance in the error
path of srp_create_target(). See also patch "IB/srp: Avoid that
I/O hangs due to a cable pull during LUN scanning" (commit ID
34aa654ecb8e).

Signed-off-by: Bart Van Assche <bart.vanassche-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
Cc: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Cc: Sebastian Parschauer <sebastian.riemer-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
Cc: <stable-u79uwXL29TY76Z2rM5mHXA@public.gmane.org> #v3.19
---
drivers/infiniband/ulp/srp/ib_srp.c | 13 +++++--------
1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index 918814c..5ce6cfd 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -3172,11 +3172,11 @@ static ssize_t srp_create_target(struct device *dev,

ret = srp_parse_options(buf, target);
if (ret)
- goto err;
+ goto out;

ret = scsi_init_shared_tag_map(target_host, target_host->can_queue);
if (ret)
- goto err;
+ goto out;

target->req_ring_size = target->queue_size - SRP_TSK_MGMT_SQ_SIZE;

@@ -3187,7 +3187,7 @@ static ssize_t srp_create_target(struct device *dev,
be64_to_cpu(target->ioc_guid),
be64_to_cpu(target->initiator_ext));
ret = -EEXIST;
- goto err;
+ goto out;
}

if (!srp_dev->has_fmr && !srp_dev->has_fr && !target->allow_ext_sg &&
@@ -3208,7 +3208,7 @@ static ssize_t srp_create_target(struct device *dev,
spin_lock_init(&target->lock);
ret = ib_query_gid(ibdev, host->port, 0, &target->sgid);
if (ret)
- goto err;
+ goto out;

ret = -ENOMEM;
target->ch_count = max_t(unsigned, num_online_nodes(),
@@ -3219,7 +3219,7 @@ static ssize_t srp_create_target(struct device *dev,
target->ch = kcalloc(target->ch_count, sizeof(*target->ch),
GFP_KERNEL);
if (!target->ch)
- goto err;
+ goto out;

node_idx = 0;
for_each_online_node(node) {
@@ -3315,9 +3315,6 @@ err_disconnect:
}

kfree(target->ch);
-
-err:
- scsi_host_put(target_host);
goto out;
}

--
2.1.4

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