From b658eb9d9075aa2b44834962a1efc4bc78e9bed8 Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Tue, 10 Nov 2020 11:04:31 +0300 Subject: [PATCH] thunderbolt: Keep the parent runtime resumed for a while on device disconnect 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 --- 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); }