pmdomain: ti_sci: add wakeup constraint to parent devices of wakeup source

Set wakeup constraint for any device in a wakeup path. All parent devices
of a wakeup device should not be turned off during suspend. This ensures
the wakeup device is kept on while the system is suspended.

Cc: stable@vger.kernel.org
Fixes: 9d8aa0dd3be4 ("pmdomain: ti_sci: add wakeup constraint management")
Reported-by: Vitor Soares <vitor.soares@toradex.com>
Closes: https://lore.kernel.org/linux-pm/c0fe43a2339c802e9ce5900092cd530a2ba17a6b.camel@gmail.com/
Signed-off-by: Kendall Willis <k-willis@ti.com>
Reviewed-by: Sebin Francis <sebin.francis@ti.com>
Signed-off-by: Ulf Hansson <ulfh@kernel.org>

diff --git a/drivers/pmdomain/ti/ti_sci_pm_domains.c b/drivers/pmdomain/ti/ti_sci_pm_domains.c
index 18d33bc35dee1b3bf6107af1e414db377d515199..949e4115f930b93b18216fde46131b5c8931c9aa 100644 (file)
--- a/drivers/pmdomain/ti/ti_sci_pm_domains.c
+++ b/drivers/pmdomain/ti/ti_sci_pm_domains.c
@@ -86,7 +86,7 @@ static inline void ti_sci_pd_set_wkup_constraint(struct device *dev)
        const struct ti_sci_handle *ti_sci = pd->parent->ti_sci;
        int ret;
 
-       if (device_may_wakeup(dev)) {
+       if (device_may_wakeup(dev) || device_wakeup_path(dev)) {
                /*
                 * If device can wakeup using IO daisy chain wakeups,
                 * we do not want to set a constraint.