linux-kernel - [PATCH v2 03/17] Revert "driver core: Don't do deferred probe in parallel with kernel

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Message-Id: <20201121020232.908850-4-saravanak@google.com>
Date:   Fri, 20 Nov 2020 18:02:18 -0800
From:   Saravana Kannan <saravanak@...gle.com>
To:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Ard Biesheuvel <ardb@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        Marc Zyngier <maz@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     Saravana Kannan <saravanak@...gle.com>,
        Tomi Valkeinen <tomi.valkeinen@...com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Grygorii Strashko <grygorii.strashko@...com>,
        kernel-team@...roid.com, linux-acpi@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-efi@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: [PATCH v2 03/17] Revert "driver core: Don't do deferred probe in
 parallel with kernel_init thread"

This reverts commit cec72f3efc6272420c2c2c699607f03d09b93e41.

Commit cec72f3efc62 ("driver core: Don't do deferred probe in parallel
with kernel_init thread") was fixing a commit 716a7a259690 ("driver
core: fw_devlink: Add support for batching fwnode parsing"). Since the
commit being fixed itself is going to be reverted, the fix can also be
reverted.

Signed-off-by: Saravana Kannan <saravanak@...gle.com>
---
 drivers/base/base.h | 1 +
 drivers/base/core.c | 1 +
 drivers/base/dd.c   | 5 +++++
 3 files changed, 7 insertions(+)

diff --git a/drivers/base/base.h b/drivers/base/base.h
index 91cfb8405abd..c3562adf4789 100644
--- a/drivers/base/base.h
+++ b/drivers/base/base.h
@@ -156,6 +156,7 @@ extern char *make_class_name(const char *name, struct kobject *kobj);
 extern int devres_release_all(struct device *dev);
 extern void device_block_probing(void);
 extern void device_unblock_probing(void);
+extern void driver_deferred_probe_force_trigger(void);
 
 /* /sys/devices directory */
 extern struct kset *devices_kset;
diff --git a/drivers/base/core.c b/drivers/base/core.c
index c91ff2546247..e6bb4bf4f19d 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -1548,6 +1548,7 @@ void fw_devlink_resume(void)
 		goto out;
 
 	device_link_add_missing_supplier_links();
+	driver_deferred_probe_force_trigger();
 out:
 	mutex_unlock(&defer_fw_devlink_lock);
 }
diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index 148e81969e04..001caa0b447c 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -167,6 +167,11 @@ static void driver_deferred_probe_trigger(void)
 	if (!driver_deferred_probe_enable)
 		return;
 
+	driver_deferred_probe_force_trigger();
+}
+
+void driver_deferred_probe_force_trigger(void)
+{
 	/*
 	 * A successful probe means that all the devices in the pending list
 	 * should be triggered to be reprobed.  Move all the deferred devices
-- 
2.29.2.454.gaff20da3a2-goog