[PATCH 5.4 15/28] scsi: target: core: Fix warning on realtime kernels

From: Greg Kroah-Hartman
Date: Wed Jun 16 2021 - 11:34:34 EST


From: Maurizio Lombardi <mlombard@xxxxxxxxxx>

[ Upstream commit 515da6f4295c2c42b8c54572cce3d2dd1167c41e ]

On realtime kernels, spin_lock_irq*(spinlock_t) do not disable the
interrupts, a call to irqs_disabled() will return false thus firing a
warning in __transport_wait_for_tasks().

Remove the warning and also replace assert_spin_locked() with
lockdep_assert_held()

Link: https://lore.kernel.org/r/20210531121326.3649-1-mlombard@xxxxxxxxxx
Reviewed-by: Bart Van Assche <bvanassche@xxxxxxx>
Signed-off-by: Maurizio Lombardi <mlombard@xxxxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/target/target_core_transport.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index a16835c0bb1d..5cf9e7677926 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -2993,9 +2993,7 @@ __transport_wait_for_tasks(struct se_cmd *cmd, bool fabric_stop,
__releases(&cmd->t_state_lock)
__acquires(&cmd->t_state_lock)
{
-
- assert_spin_locked(&cmd->t_state_lock);
- WARN_ON_ONCE(!irqs_disabled());
+ lockdep_assert_held(&cmd->t_state_lock);

if (fabric_stop)
cmd->transport_state |= CMD_T_FABRIC_STOP;
--
2.30.2