diff options
| author | Quinn Tran <quinn.tran@cavium.com> | 2017-12-28 23:33:27 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2018-01-04 07:41:06 +0300 |
| commit | 9d1aa4e14e0ba10f946dafd46679f16f93013d58 (patch) | |
| tree | 3c357cb0e7c4a2945a468f07ac21796f0d3413b2 /drivers/scsi/qla2xxx | |
| parent | a4239945b8ad112fb914d0605c8f6c5fd3330f61 (diff) | |
| download | linux-9d1aa4e14e0ba10f946dafd46679f16f93013d58.tar.xz | |
scsi: qla2xxx: Add lock protection around host lookup
Host lookup via btree is currently protected by the hardware_lock.
Add hardware_lock when modifying btree to store host pointer.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/qla2xxx')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_init.c | 3 | ||||
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_mid.c | 9 | ||||
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_target.c | 6 |
3 files changed, 8 insertions, 10 deletions
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index f26acb7ce315..4f4d8b2b7b32 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -3939,6 +3939,7 @@ qla2x00_configure_hba(scsi_qla_host_t *vha) struct qla_hw_data *ha = vha->hw; scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); port_id_t id; + unsigned long flags; /* Get host addresses. */ rval = qla2x00_get_adapter_id(vha, @@ -4020,7 +4021,9 @@ qla2x00_configure_hba(scsi_qla_host_t *vha) id.b.area = area; id.b.al_pa = al_pa; id.b.rsvd_1 = 0; + spin_lock_irqsave(&ha->hardware_lock, flags); qlt_update_host_map(vha, id); + spin_unlock_irqrestore(&ha->hardware_lock, flags); if (!vha->flags.init_done) ql_log(ql_log_info, vha, 0x2010, diff --git a/drivers/scsi/qla2xxx/qla_mid.c b/drivers/scsi/qla2xxx/qla_mid.c index 2570146beae4..bf365f8a9d32 100644 --- a/drivers/scsi/qla2xxx/qla_mid.c +++ b/drivers/scsi/qla2xxx/qla_mid.c @@ -50,10 +50,11 @@ qla24xx_allocate_vp_id(scsi_qla_host_t *vha) spin_lock_irqsave(&ha->vport_slock, flags); list_add_tail(&vha->list, &ha->vp_list); + spin_unlock_irqrestore(&ha->vport_slock, flags); + spin_lock_irqsave(&ha->hardware_lock, flags); qlt_update_vp_map(vha, SET_VP_IDX); - - spin_unlock_irqrestore(&ha->vport_slock, flags); + spin_unlock_irqrestore(&ha->hardware_lock, flags); mutex_unlock(&ha->vport_lock); return vp_id; @@ -158,9 +159,9 @@ qla24xx_disable_vp(scsi_qla_host_t *vha) atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); /* Remove port id from vp target map */ - spin_lock_irqsave(&vha->hw->vport_slock, flags); + spin_lock_irqsave(&vha->hw->hardware_lock, flags); qlt_update_vp_map(vha, RESET_AL_PA); - spin_unlock_irqrestore(&vha->hw->vport_slock, flags); + spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); qla2x00_mark_vp_devices_dead(vha); atomic_set(&vha->vp_state, VP_FAILED); diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c index d4ead404100c..5695fc249b73 100644 --- a/drivers/scsi/qla2xxx/qla_target.c +++ b/drivers/scsi/qla2xxx/qla_target.c @@ -7184,20 +7184,14 @@ qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id) { - unsigned long flags; - struct qla_hw_data *ha = vha->hw; if (!vha->d_id.b24) { - spin_lock_irqsave(&ha->vport_slock, flags); vha->d_id = id; qlt_update_vp_map(vha, SET_AL_PA); - spin_unlock_irqrestore(&ha->vport_slock, flags); } else if (vha->d_id.b24 != id.b24) { - spin_lock_irqsave(&ha->vport_slock, flags); qlt_update_vp_map(vha, RESET_AL_PA); vha->d_id = id; qlt_update_vp_map(vha, SET_AL_PA); - spin_unlock_irqrestore(&ha->vport_slock, flags); } } |