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scsi: qla2xxx: Replace usage of spin_lock with spin_lock_irqsave 

Convert usage of spin_lock to spin_lock_irqsave because qla2xxx driver
can access all the data structures in an interrupt context.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Reviewed-by: Bart Van Assche <Bart.VanAssche@sandisk.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Quinn Tran 2017-06-02 09:11:54 -07:00 committed by Martin K. Petersen
parent 3c4810ffdc
commit 8b631d87ba
1 changed files with 14 additions and 12 deletions
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26
drivers/scsi/qla2xxx/qla_target.c
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@ -1762,13 +1762,13 @@ static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag)
{
struct qla_tgt_sess_op *op;
struct qla_tgt_cmd *cmd;
unsigned long flags;
spin_lock(&vha->cmd_list_lock);
spin_lock_irqsave(&vha->cmd_list_lock, flags);
list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
if (tag == op->atio.u.isp24.exchange_addr) {
op->aborted = true;
spin_unlock(&vha->cmd_list_lock);
spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
return 1;
}
}
@ -1776,7 +1776,7 @@ static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag)
list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
if (tag == op->atio.u.isp24.exchange_addr) {
op->aborted = true;
spin_unlock(&vha->cmd_list_lock);
spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
return 1;
}
}
@ -1784,12 +1784,12 @@ static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag)
list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
if (tag == cmd->atio.u.isp24.exchange_addr) {
cmd->aborted = 1;
spin_unlock(&vha->cmd_list_lock);
spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
return 1;
}
}
spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
spin_unlock(&vha->cmd_list_lock);
return 0;
}
@ -1804,9 +1804,10 @@ static void abort_cmds_for_lun(struct scsi_qla_host *vha,
struct qla_tgt_sess_op *op;
struct qla_tgt_cmd *cmd;
uint32_t key;
unsigned long flags;
key = sid_to_key(s_id);
spin_lock(&vha->cmd_list_lock);
spin_lock_irqsave(&vha->cmd_list_lock, flags);
list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
uint32_t op_key;
uint32_t op_lun;
@ -1839,7 +1840,7 @@ static void abort_cmds_for_lun(struct scsi_qla_host *vha,
if (cmd_key == key && cmd_lun == lun)
cmd->aborted = 1;
}
spin_unlock(&vha->cmd_list_lock);
spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
}
/* ha->hardware_lock supposed to be held on entry */
@ -4216,9 +4217,9 @@ static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
memcpy(&op->atio, atio, sizeof(*atio));
op->vha = vha;
spin_lock(&vha->cmd_list_lock);
spin_lock_irqsave(&vha->cmd_list_lock, flags);
list_add_tail(&op->cmd_list, &vha->qla_sess_op_cmd_list);
spin_unlock(&vha->cmd_list_lock);
spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
INIT_WORK(&op->work, qlt_create_sess_from_atio);
queue_work(qla_tgt_wq, &op->work);
@ -4529,12 +4530,13 @@ static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
struct qla_tgt_cmd *cmd;
uint32_t key;
int count = 0;
unsigned long flags;
key = (((u32)s_id->b.domain << 16) |
((u32)s_id->b.area << 8) |
((u32)s_id->b.al_pa));
spin_lock(&vha->cmd_list_lock);
spin_lock_irqsave(&vha->cmd_list_lock, flags);
list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
@ -4559,7 +4561,7 @@ static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
count++;
}
}
spin_unlock(&vha->cmd_list_lock);
spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
return count;
}