From: Bjorn Andersson <quic_bjorande@xxxxxxxxxxx>
commit ad51126037a43c05f5f4af5eb262734e3e88ca59 upstream.
When the pmic_glink state is UP and we either receive a protection-
domain (PD) notification indicating that the PD is going down, or that
the whole remoteproc is going down, it's expected that the pmic_glink
client instances are notified that their function has gone DOWN.
This is not what the code does, which results in the client state either
not updating, or being wrong in many cases. So let's fix the conditions.
Fixes: 58ef4ece1e41 ("soc: qcom: pmic_glink: Introduce base PMIC GLINK driver")
Cc: stable@xxxxxxxxxxxxxxx
Reviewed-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
Reviewed-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Tested-by: Amit Pundir <amit.pundir@xxxxxxxxxx>
Reviewed-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
Tested-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
Signed-off-by: Bjorn Andersson <quic_bjorande@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/20240820-pmic-glink-v6-11-races-v3-3-eec53c750a04@xxxxxxxxxxx
Signed-off-by: Bjorn Andersson <andersson@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/soc/qcom/pmic_glink.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/soc/qcom/pmic_glink.c
+++ b/drivers/soc/qcom/pmic_glink.c
@@ -178,7 +178,7 @@ static void pmic_glink_state_notify_clie
if (pg->pdr_state == SERVREG_SERVICE_STATE_UP && pg->ept)
new_state = SERVREG_SERVICE_STATE_UP;
} else {
- if (pg->pdr_state == SERVREG_SERVICE_STATE_UP && pg->ept)
+ if (pg->pdr_state == SERVREG_SERVICE_STATE_DOWN || !pg->ept)
new_state = SERVREG_SERVICE_STATE_DOWN;
}
Patches currently in stable-queue which might be from quic_bjorande@xxxxxxxxxxx are
queue-6.6/soc-qcom-pmic_glink-actually-communicate-when-remote-goes-down.patch
queue-6.6/soc-qcom-pmic_glink-fix-race-during-initialization.patch
