When __transport_register_session is called from
transport_register_session irqs will already have been disabled, so we
do not want the unlock irq call to enable them until the higher level
has done the final spin_unlock_irqrestore/ spin_unlock_irq.
This has __transport_register_session use the save/restore call.
Signed-off-by: Mike Christie <mchristi@xxxxxxxxxx>
Reviewed-by: Bart Van Assche <bart.vanassche@xxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
---
drivers/target/target_core_transport.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 7261561..b419d4f 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -347,6 +347,7 @@ void __transport_register_session(
{
const struct target_core_fabric_ops *tfo = se_tpg->se_tpg_tfo;
unsigned char buf[PR_REG_ISID_LEN];
+ unsigned long flags;
se_sess->se_tpg = se_tpg;
se_sess->fabric_sess_ptr = fabric_sess_ptr;
@@ -383,7 +384,7 @@ void __transport_register_session(
se_sess->sess_bin_isid = get_unaligned_be64(&buf[0]);
}
- spin_lock_irq(&se_nacl->nacl_sess_lock);
+ spin_lock_irqsave(&se_nacl->nacl_sess_lock, flags);
/*
* The se_nacl->nacl_sess pointer will be set to the
* last active I_T Nexus for each struct se_node_acl.
@@ -392,7 +393,7 @@ void __transport_register_session(
list_add_tail(&se_sess->sess_acl_list,
&se_nacl->acl_sess_list);
- spin_unlock_irq(&se_nacl->nacl_sess_lock);
+ spin_unlock_irqrestore(&se_nacl->nacl_sess_lock, flags);
}
list_add_tail(&se_sess->sess_list, &se_tpg->tpg_sess_list);
--
2.7.2
