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[SCSI] qla2xxx: Avoid depending on SCSI host_lock in queuecommand function. 

Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: Madhuranath Iyengar <Madhu.Iyengar@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Giridhar Malavali 2010-10-15 11:27:49 -07:00 committed by James Bottomley
parent 9dac0d9a93
commit 38170fa8e6
3 changed files with 11 additions and 13 deletions
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8
drivers/scsi/qla2xxx/qla_attr.c
View File

@ -1538,6 +1538,10 @@ qla2x00_dev_loss_tmo_callbk(struct fc_rport *rport)
if (!fcport)
return;
/* Now that the rport has been deleted, set the fcport state to
FCS_DEVICE_DEAD */
atomic_set(&fcport->state, FCS_DEVICE_DEAD);
/*
* Transport has effectively 'deleted' the rport, clear
* all local references.
@ -1547,10 +1551,6 @@ qla2x00_dev_loss_tmo_callbk(struct fc_rport *rport)
*((fc_port_t **)rport->dd_data) = NULL;
spin_unlock_irq(host->host_lock);
/* Now that the rport has been deleted, set the fcport state to
FCS_DEVICE_DEAD */
atomic_set(&fcport->state, FCS_DEVICE_DEAD);
if (test_bit(ABORT_ISP_ACTIVE, &fcport->vha->dpc_flags))
return;

2
drivers/scsi/qla2xxx/qla_init.c
View File

@ -2928,8 +2928,8 @@ qla2x00_update_fcport(scsi_qla_host_t *vha, fc_port_t *fcport)
fcport->flags &= ~(FCF_LOGIN_NEEDED | FCF_ASYNC_SENT);
qla2x00_iidma_fcport(vha, fcport);
atomic_set(&fcport->state, FCS_ONLINE);
qla2x00_reg_remote_port(vha, fcport);
atomic_set(&fcport->state, FCS_ONLINE);
}
/*

14
drivers/scsi/qla2xxx/qla_os.c
View File

@ -545,6 +545,7 @@ qla2xxx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
srb_t *sp;
int rval;
spin_unlock_irq(vha->host->host_lock);
if (ha->flags.eeh_busy) {
if (ha->flags.pci_channel_io_perm_failure)
cmd->result = DID_NO_CONNECT << 16;
@ -559,10 +560,6 @@ qla2xxx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
goto qc24_fail_command;
}
/* Close window on fcport/rport state-transitioning. */
if (fcport->drport)
goto qc24_target_busy;
if (!vha->flags.difdix_supported &&
scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) {
DEBUG2(qla_printk(KERN_ERR, ha,
@ -573,15 +570,14 @@ qla2xxx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
}
if (atomic_read(&fcport->state) != FCS_ONLINE) {
if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
atomic_read(&base_vha->loop_state) == LOOP_DEAD) {
atomic_read(&fcport->state) == FCS_DEVICE_LOST ||
atomic_read(&base_vha->loop_state) == LOOP_DEAD) {
cmd->result = DID_NO_CONNECT << 16;
goto qc24_fail_command;
}
goto qc24_target_busy;
}
spin_unlock_irq(vha->host->host_lock);
sp = qla2x00_get_new_sp(base_vha, fcport, cmd, done);
if (!sp)
goto qc24_host_busy_lock;
@ -603,9 +599,11 @@ qc24_host_busy_lock:
return SCSI_MLQUEUE_HOST_BUSY;
qc24_target_busy:
spin_lock_irq(vha->host->host_lock);
return SCSI_MLQUEUE_TARGET_BUSY;
qc24_fail_command:
spin_lock_irq(vha->host->host_lock);
done(cmd);
return 0;
@ -2613,12 +2611,12 @@ qla2x00_mark_all_devices_lost(scsi_qla_host_t *vha, int defer)
if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
continue;
if (atomic_read(&fcport->state) == FCS_ONLINE) {
atomic_set(&fcport->state, FCS_DEVICE_LOST);
if (defer)
qla2x00_schedule_rport_del(vha, fcport, defer);
else if (vha->vp_idx == fcport->vp_idx)
qla2x00_schedule_rport_del(vha, fcport, defer);
}
atomic_set(&fcport->state, FCS_DEVICE_LOST);
}
}