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[v3,6/6] PM / Domains: Stop deferring probe at the end of initcall

Message ID 20180628204344.13973-7-robh@kernel.org
State Superseded
Headers show
Series None | expand

Commit Message

Rob Herring June 28, 2018, 8:43 p.m. UTC 
All PM domain drivers must be built-in (at least those using DT), so
there is no point deferring probe after initcalls are done. Continuing
to defer probe may prevent booting successfully even if managing PM
domains is not required. This can happen if the user failed to enable
the driver or if power-domains are added to a platform's DT, but there
is not yet a driver (e.g. a new DTB with an old kernel).

Call the driver core function driver_deferred_probe_check_init_done()
instead of just returning -EPROBE_DEFER to stop deferring probe when
initcalls are done.

Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Kevin Hilman <khilman@kernel.org>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Len Brown <len.brown@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-pm@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>

---
v3:
  - Update to new function name

 drivers/base/power/domain.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--
2.17.1
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Patch

diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index 4925af5c4cf0..8c12213875c6 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -2253,7 +2253,7 @@  static int __genpd_dev_pm_attach(struct device *dev, struct device_node *np,
 		mutex_unlock(&gpd_list_lock);
 		dev_dbg(dev, "%s() failed to find PM domain: %ld\n",
 			__func__, PTR_ERR(pd));
-		return -EPROBE_DEFER;
+		return driver_deferred_probe_check_state(dev);
 	}

 	dev_dbg(dev, "adding to PM domain %s\n", pd->name);