6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Udit Kumar <u-kumar1@xxxxxx>
[ Upstream commit 8fa052c29e509f3e47d56d7fc2ca28094d78c60a ]
Few times, core1 was scheduled to boot first before core0, which leads
to error:
'k3_r5_rproc_start: can not start core 1 before core 0'.
This was happening due to some scheduling between prepare and start
callback. The probe function waits for event, which is getting
triggered by prepare callback. To avoid above condition move event
trigger to start instead of prepare callback.
Fixes: 61f6f68447ab ("remoteproc: k3-r5: Wait for core0 power-up before powering up core1")
Signed-off-by: Udit Kumar <u-kumar1@xxxxxx>
[ Applied wakeup event trigger only for Split-Mode booted rprocs ]
Signed-off-by: Beleswar Padhi <b-padhi@xxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Link: https://lore.kernel.org/r/20240820105004.2788327-1-b-padhi@xxxxxx
Signed-off-by: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/remoteproc/ti_k3_r5_remoteproc.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/remoteproc/ti_k3_r5_remoteproc.c b/drivers/remoteproc/ti_k3_r5_remoteproc.c
index 15fc663389096..5491b1b17ca36 100644
--- a/drivers/remoteproc/ti_k3_r5_remoteproc.c
+++ b/drivers/remoteproc/ti_k3_r5_remoteproc.c
@@ -469,8 +469,6 @@ static int k3_r5_rproc_prepare(struct rproc *rproc)
ret);
return ret;
}
- core->released_from_reset = true;
- wake_up_interruptible(&cluster->core_transition);
/*
* Newer IP revisions like on J7200 SoCs support h/w auto-initialization
@@ -587,6 +585,9 @@ static int k3_r5_rproc_start(struct rproc *rproc)
ret = k3_r5_core_run(core);
if (ret)
return ret;
+
+ core->released_from_reset = true;
+ wake_up_interruptible(&cluster->core_transition);
}
return 0;
--
2.43.0
