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Subject[PATCH 04/12] thunderbolt: Keep the parent runtime resumed for a while on device disconnect
Date
When doing device firmware upgrade the device will disconnect for a
while and then reconnect back. Keep the parent device (and the whole
domain) powered for a while so we don't need to runtime resume
immediately when the device is connected back after the device upgrade
completes.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
---
drivers/thunderbolt/icm.c | 11 +++++++++++
1 file changed, 11 insertions(+)

diff --git a/drivers/thunderbolt/icm.c b/drivers/thunderbolt/icm.c
index beee6e6b8b6e..635b949fb1d6 100644
--- a/drivers/thunderbolt/icm.c
+++ b/drivers/thunderbolt/icm.c
@@ -870,7 +870,13 @@ icm_fr_device_disconnected(struct tb *tb, const struct icm_pkg_header *hdr)
return;
}

+ pm_runtime_get_sync(sw->dev.parent);
+
remove_switch(sw);
+
+ pm_runtime_mark_last_busy(sw->dev.parent);
+ pm_runtime_put_autosuspend(sw->dev.parent);
+
tb_switch_put(sw);
}

@@ -1280,8 +1286,13 @@ icm_tr_device_disconnected(struct tb *tb, const struct icm_pkg_header *hdr)
tb_warn(tb, "no switch exists at %llx, ignoring\n", route);
return;
}
+ pm_runtime_get_sync(sw->dev.parent);

remove_switch(sw);
+
+ pm_runtime_mark_last_busy(sw->dev.parent);
+ pm_runtime_put_autosuspend(sw->dev.parent);
+
tb_switch_put(sw);
}

--
2.29.2
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