From: Jack Wang <jinpu.wang@xxxxxxxxx>
When IO is completed, rtrs can be called in softirq context,
unconditionally enabling irq could cause panic.
To be on safe side, use spin_lock_irqsave and spin_unlock_irqrestore
instread.
Signed-off-by: Jack Wang <jinpu.wang@xxxxxxxxx>
Signed-off-by: Florian-Ewald Mueller <florian-ewald.mueller@xxxxxxxxx>
Signed-off-by: Md Haris Iqbal <haris.iqbal@xxxxxxxxx>
Signed-off-by: Grzegorz Prajsner <grzegorz.prajsner@xxxxxxxxx>
---
drivers/infiniband/ulp/rtrs/rtrs-srv.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/infiniband/ulp/rtrs/rtrs-srv.c b/drivers/infiniband/ulp/rtrs/rtrs-srv.c
index 75e56604e462..ab4200041fd3 100644
--- a/drivers/infiniband/ulp/rtrs/rtrs-srv.c
+++ b/drivers/infiniband/ulp/rtrs/rtrs-srv.c
@@ -65,8 +65,9 @@ static bool rtrs_srv_change_state(struct rtrs_srv_path *srv_path,
{
enum rtrs_srv_state old_state;
bool changed = false;
+ unsigned long flags;
- spin_lock_irq(&srv_path->state_lock);
+ spin_lock_irqsave(&srv_path->state_lock, flags);
old_state = srv_path->state;
switch (new_state) {
case RTRS_SRV_CONNECTED:
@@ -87,7 +88,7 @@ static bool rtrs_srv_change_state(struct rtrs_srv_path *srv_path,
}
if (changed)
srv_path->state = new_state;
- spin_unlock_irq(&srv_path->state_lock);
+ spin_unlock_irqrestore(&srv_path->state_lock, flags);
return changed;
}
--
2.25.1
