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| author | Nicholas Bellinger <nab@linux-iscsi.org> | 2011-10-22 04:06:23 -0700 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2011-10-24 03:22:02 +0000 |
| commit | 9ac549873d35626cd6d7718691aaf4c55f2667a7 (patch) | |
| tree | dd4ed6ddb6d8a852242a349bc5021e20f956ff1a /drivers/target | |
| parent | 38b400676b5b33178a418bebc2b1af6c3fb0b380 (diff) | |
| download | blackbird-op-linux-9ac549873d35626cd6d7718691aaf4c55f2667a7.tar.gz blackbird-op-linux-9ac549873d35626cd6d7718691aaf4c55f2667a7.zip | |
target: Fix BIDI t_task_cdb handling in transport_generic_new_cmd
This patch fixes a bug for BIDI handling in transport_generic_new_cmd() where
cmd->t_task_cdbs_left and Co. where not taking into account the extra
task count generated during the first call to transport_allocate_data_tasks().
Cc: Christoph Hellwig <hch@lst.de>
Cc: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target')
| -rw-r--r-- | drivers/target/target_core_transport.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index 8c8e62e2687f..ab4e3083d968 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -3934,7 +3934,7 @@ transport_allocate_control_task(struct se_cmd *cmd) int transport_generic_new_cmd(struct se_cmd *cmd) { struct se_device *dev = cmd->se_dev; - int task_cdbs; + int task_cdbs, task_cdbs_bidi = 0; int set_counts = 1; int ret = 0; @@ -3957,9 +3957,10 @@ int transport_generic_new_cmd(struct se_cmd *cmd) dev->transport->transport_type != TRANSPORT_PLUGIN_PHBA_PDEV) { BUG_ON(!(cmd->se_cmd_flags & SCF_SCSI_DATA_SG_IO_CDB)); - ret = transport_allocate_data_tasks(cmd, DMA_FROM_DEVICE, - cmd->t_bidi_data_sg, cmd->t_bidi_data_nents); - if (ret <= 0) + task_cdbs_bidi = transport_allocate_data_tasks(cmd, + DMA_FROM_DEVICE, cmd->t_bidi_data_sg, + cmd->t_bidi_data_nents); + if (task_cdbs_bidi <= 0) goto out_fail; atomic_inc(&cmd->t_fe_count); @@ -3983,11 +3984,10 @@ int transport_generic_new_cmd(struct se_cmd *cmd) atomic_inc(&cmd->t_se_count); } - cmd->t_task_list_num = task_cdbs; - - atomic_set(&cmd->t_task_cdbs_left, task_cdbs); - atomic_set(&cmd->t_task_cdbs_ex_left, task_cdbs); - atomic_set(&cmd->t_task_cdbs_timeout_left, task_cdbs); + cmd->t_task_list_num = (task_cdbs + task_cdbs_bidi); + atomic_set(&cmd->t_task_cdbs_left, cmd->t_task_list_num); + atomic_set(&cmd->t_task_cdbs_ex_left, cmd->t_task_list_num); + atomic_set(&cmd->t_task_cdbs_timeout_left, cmd->t_task_list_num); /* * For WRITEs, let the fabric know its buffer is ready.. |
