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author | Nicholas Bellinger <nab@linux-iscsi.org> | 2017-07-11 10:50:00 -0700 |
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committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2017-07-11 10:56:38 -0700 |
commit | 55dd8cf2163e1866d9497c4f361d6ed42b3a192b (patch) | |
tree | 6e8e722c007d72db6ebfab3c260b217611647d3e /drivers/scsi/qla2xxx/tcm_qla2xxx.c | |
parent | daf78c305148c5a52f75a7fd88461ffa7066aec6 (diff) | |
download | linux-55dd8cf2163e1866d9497c4f361d6ed42b3a192b.tar.gz linux-55dd8cf2163e1866d9497c4f361d6ed42b3a192b.tar.bz2 linux-55dd8cf2163e1866d9497c4f361d6ed42b3a192b.zip |
Revert "qla2xxx: Fix incorrect tcm_qla2xxx_free_cmd use during TMR ABORT"
This reverts commit 5f572526a18418258bfa137e3353656c25439500.
As reported by Pascal here:
http://www.spinics.net/lists/target-devel/msg15808.html
there still appears to be another issue related to this change
to drop the original bogus tcm_qla2xxx_free_cmd() usage from
tcm_qla2xxx_handle_data_work() and tcm_qla2xxx_aborted_task().
So revert this for now, until Pascal can verify with further
debug in place to understand what's going on.
Reported-by: Pascal de Bruijn <p.debruijn@unilogic.nl>
Cc: Pascal de Bruijn <p.debruijn@unilogic.nl>
Cc: Himanshu Madhani <himanshu.madhani@cavium.com>
Cc: Quinn Tran <quinn.tran@cavium.com>
Cc: <stable@vger.kernel.org> # 3.10+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/scsi/qla2xxx/tcm_qla2xxx.c')
-rw-r--r-- | drivers/scsi/qla2xxx/tcm_qla2xxx.c | 36 |
1 files changed, 33 insertions, 3 deletions
diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c index 8c1bf9b14bb2..75aeb9fdfd06 100644 --- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c +++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c @@ -415,7 +415,6 @@ static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd) static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd) { - struct qla_tgt_cmd *cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); unsigned long flags; /* * Check for WRITE_PENDING status to determine if we need to wait for @@ -425,7 +424,8 @@ static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd) if (se_cmd->t_state == TRANSPORT_WRITE_PENDING || se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) { spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); - wait_for_completion(&cmd->write_pending_abort_comp); + wait_for_completion_timeout(&se_cmd->t_transport_stop_comp, + 50); return 0; } spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); @@ -501,6 +501,7 @@ static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd, static void tcm_qla2xxx_handle_data_work(struct work_struct *work) { struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); + unsigned long flags; /* * Ensure that the complete FCP WRITE payload has been received. @@ -508,6 +509,17 @@ static void tcm_qla2xxx_handle_data_work(struct work_struct *work) */ cmd->cmd_in_wq = 0; + spin_lock_irqsave(&cmd->cmd_lock, flags); + cmd->data_work = 1; + if (cmd->aborted) { + cmd->data_work_free = 1; + spin_unlock_irqrestore(&cmd->cmd_lock, flags); + + tcm_qla2xxx_free_cmd(cmd); + return; + } + spin_unlock_irqrestore(&cmd->cmd_lock, flags); + cmd->vha->tgt_counters.qla_core_ret_ctio++; if (!cmd->write_data_transferred) { /* @@ -515,7 +527,7 @@ static void tcm_qla2xxx_handle_data_work(struct work_struct *work) * waiting upon completion in tcm_qla2xxx_write_pending_status() */ if (cmd->se_cmd.transport_state & CMD_T_ABORTED) { - complete(&cmd->write_pending_abort_comp); + complete(&cmd->se_cmd.t_transport_stop_comp); return; } @@ -741,13 +753,31 @@ static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd) qlt_xmit_tm_rsp(mcmd); } +#define DATA_WORK_NOT_FREE(_cmd) (_cmd->data_work && !_cmd->data_work_free) static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd) { struct qla_tgt_cmd *cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); + unsigned long flags; if (qlt_abort_cmd(cmd)) return; + + spin_lock_irqsave(&cmd->cmd_lock, flags); + if ((cmd->state == QLA_TGT_STATE_NEW)|| + ((cmd->state == QLA_TGT_STATE_DATA_IN) && + DATA_WORK_NOT_FREE(cmd))) { + cmd->data_work_free = 1; + spin_unlock_irqrestore(&cmd->cmd_lock, flags); + /* + * cmd has not reached fw, Use this trigger to free it. + */ + tcm_qla2xxx_free_cmd(cmd); + return; + } + spin_unlock_irqrestore(&cmd->cmd_lock, flags); + return; + } static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *, |