[PATCH v2 3/4] Revert "PM: domains: Delete usage of driver_deferred_probe_check_state()"

From: Saravana Kannan <saravanak@google.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	Kevin Hilman <khilman@kernel.org>,
	Ulf Hansson <ulf.hansson@linaro.org>, Pavel Machek <pavel@ucw.cz>,
	Len Brown <len.brown@intel.com>, Joerg Roedel <joro@8bytes.org>,
	Will Deacon <will@kernel.org>,
	Robin Murphy <robin.murphy@arm.com>, Andrew Lunn <andrew@lunn.ch>,
	Heiner Kallweit <hkallweit1@gmail.com>,
	Russell King <linux@armlinux.org.uk>,
	"David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	Saravana Kannan <saravanak@google.com>
Cc: Peng Fan <peng.fan@nxp.com>,
	Luca Weiss <luca.weiss@fairphone.com>,
	Doug Anderson <dianders@chromium.org>,
	Colin Foster <colin.foster@in-advantage.com>,
	Tony Lindgren <tony@atomide.com>,
	Alexander Stein <alexander.stein@ew.tq-group.com>,
	Naresh Kamboju <naresh.kamboju@linaro.org>,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	Jean-Philippe Brucker <jpb@kernel.org>,
	kernel-team@android.com, linux-kernel@vger.kernel.org,
	linux-pm@vger.kernel.org, iommu@lists.linux.dev,
	netdev@vger.kernel.org
Subject: [PATCH v2 3/4] Revert "PM: domains: Delete usage of driver_deferred_probe_check_state()"
Date: Fri, 19 Aug 2022 15:16:13 -0700	[thread overview]
Message-ID: <20220819221616.2107893-4-saravanak@google.com> (raw)
In-Reply-To: <20220819221616.2107893-1-saravanak@google.com>

This reverts commit 5a46079a96451cfb15e4f5f01f73f7ba24ef851a.

Quite a few issues have been reported [1][2][3][4][5][6] on the original
commit. While about half of them have been fixed, I'll need to fix the rest
before driver_deferred_probe_check_state() can be deleted. So, revert the
deletion for now.

[1] - https://lore.kernel.org/all/DU0PR04MB941735271F45C716342D0410886B9@DU0PR04MB9417.eurprd04.prod.outlook.com/
[2] - https://lore.kernel.org/all/CM6REZS9Z8AC.2KCR9N3EFLNQR@otso/
[3] - https://lore.kernel.org/all/CAD=FV=XYVwaXZxqUKAuM5c7NiVjFz5C6m6gAHSJ7rBXBF94_Tg@mail.gmail.com/
[4] - https://lore.kernel.org/all/Yvpd2pwUJGp7R+YE@euler/
[5] - https://lore.kernel.org/lkml/20220601070707.3946847-2-saravanak@google.com/
[6] - https://lore.kernel.org/all/CA+G9fYt_cc5SiNv1Vbse=HYY_+uc+9OYPZuJ-x59bROSaLN6fw@mail.gmail.com/

Fixes: 5a46079a9645 ("PM: domains: Delete usage of driver_deferred_probe_check_state()")
Reported-by: Peng Fan <peng.fan@nxp.com>
Reported-by: Luca Weiss <luca.weiss@fairphone.com>
Reported-by: Doug Anderson <dianders@chromium.org>
Reported-by: Colin Foster <colin.foster@in-advantage.com>
Reported-by: Tony Lindgren <tony@atomide.com>
Reported-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Reviewed-by: Tony Lindgren <tony@atomide.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Saravana Kannan <saravanak@google.com>
---
 drivers/base/power/domain.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index 5a2e0232862e..55a10e6d4e2a 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -2733,7 +2733,7 @@ static int __genpd_dev_pm_attach(struct device *dev, struct device *base_dev,
 		mutex_unlock(&gpd_list_lock);
 		dev_dbg(dev, "%s() failed to find PM domain: %ld\n",
 			__func__, PTR_ERR(pd));
-		return -ENODEV;
+		return driver_deferred_probe_check_state(base_dev);
 	}
 
 	dev_dbg(dev, "adding to PM domain %s\n", pd->name);
-- 
2.37.1.595.g718a3a8f04-goog

