diff options
| author | Roland Dreier <roland@purestorage.com> | 2012-07-16 22:04:39 +0400 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2012-07-18 04:05:05 +0400 |
| commit | d6dfc868bcf329392abd1ecfa7357eb51ebf8c30 (patch) | |
| tree | 7eb33785e4d6a59111560b56e68f4facaddee310 /drivers/target/tcm_fc | |
| parent | 7409a6657aebf8be74c21d0eded80709b27275cb (diff) | |
| download | linux-d6dfc868bcf329392abd1ecfa7357eb51ebf8c30.tar.xz | |
target: Allow for target_submit_cmd() returning errors
We want it to be possible for target_submit_cmd() to return errors up
to its fabric module callers. For now just update the prototype to
return an int, and update all callers to handle non-zero return values
as an error.
This is immediately useful for tcm_qla2xxx to fix a long-standing active
I/O session shutdown race, but tcm_fc, usb-gadget, and sbp-target the
fabric maintainers need to check + ACK that handling a target_submit_cmd()
failure due to session shutdown does not introduce regressions
(nab: Respin against for-next after initial NACK + update docbook comment +
fix double se_cmd init in exception path for usb-gadget)
Cc: Chad Dupuis <chad.dupuis@qlogic.com>
Cc: Arun Easi <arun.easi@qlogic.com>
Cc: Chris Boot <bootc@bootc.net>
Cc: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: Mark Rustad <mark.d.rustad@intel.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Andy Grover <agrover@redhat.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target/tcm_fc')
| -rw-r--r-- | drivers/target/tcm_fc/tfc_cmd.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/target/tcm_fc/tfc_cmd.c b/drivers/target/tcm_fc/tfc_cmd.c index 4ad58ac823e5..b9cb5006177e 100644 --- a/drivers/target/tcm_fc/tfc_cmd.c +++ b/drivers/target/tcm_fc/tfc_cmd.c @@ -543,9 +543,11 @@ static void ft_send_work(struct work_struct *work) * Use a single se_cmd->cmd_kref as we expect to release se_cmd * directly from ft_check_stop_free callback in response path. */ - target_submit_cmd(&cmd->se_cmd, cmd->sess->se_sess, fcp->fc_cdb, - &cmd->ft_sense_buffer[0], scsilun_to_int(&fcp->fc_lun), - ntohl(fcp->fc_dl), task_attr, data_dir, 0); + if (target_submit_cmd(&cmd->se_cmd, cmd->sess->se_sess, fcp->fc_cdb, + &cmd->ft_sense_buffer[0], scsilun_to_int(&fcp->fc_lun), + ntohl(fcp->fc_dl), task_attr, data_dir, 0)) + goto err; + pr_debug("r_ctl %x alloc target_submit_cmd\n", fh->fh_r_ctl); return; |