linux-kernel - [PATCH] i2c: core: Drop dev_pm_domain

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250827101042.927030-1-claudiu.beznea.uj@bp.renesas.com>
Date: Wed, 27 Aug 2025 13:10:42 +0300
From: Claudiu <claudiu.beznea@...on.dev>
To: wsa+renesas@...g-engineering.com,
	ulf.hansson@...aro.org,
	rafael@...nel.org
Cc: claudiu.beznea@...on.dev,
	linux-i2c@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
Subject: [PATCH] i2c: core: Drop dev_pm_domain_detach() call

From: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>

Starting with commit f99508074e78 ("PM: domains: Detach on
device_unbind_cleanup()"), there is no longer a need to call
dev_pm_domain_detach() in the bus remove function. The
device_unbind_cleanup() function now handles this to avoid
invoking devres cleanup handlers while the PM domain is
powered off, which could otherwise lead to failures as
described in the above-mentioned commit.

Drop the explicit dev_pm_domain_detach() call and rely instead
on the flags passed to dev_pm_domain_attach() to power off the
domain.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
---
 drivers/i2c/i2c-core-base.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c
index ecca8c006b02..ae7e9c8b65a6 100644
--- a/drivers/i2c/i2c-core-base.c
+++ b/drivers/i2c/i2c-core-base.c
@@ -573,7 +573,8 @@ static int i2c_device_probe(struct device *dev)
 		goto err_clear_wakeup_irq;
 
 	do_power_on = !i2c_acpi_waive_d0_probe(dev);
-	status = dev_pm_domain_attach(&client->dev, do_power_on ? PD_FLAG_ATTACH_POWER_ON : 0);
+	status = dev_pm_domain_attach(&client->dev, PD_FLAG_DETACH_POWER_OFF |
+				      (do_power_on ? PD_FLAG_ATTACH_POWER_ON : 0));
 	if (status)
 		goto err_clear_wakeup_irq;
 
@@ -581,7 +582,7 @@ static int i2c_device_probe(struct device *dev)
 						    GFP_KERNEL);
 	if (!client->devres_group_id) {
 		status = -ENOMEM;
-		goto err_detach_pm_domain;
+		goto err_clear_wakeup_irq;
 	}
 
 	client->debugfs = debugfs_create_dir(dev_name(&client->dev),
@@ -608,8 +609,6 @@ static int i2c_device_probe(struct device *dev)
 err_release_driver_resources:
 	debugfs_remove_recursive(client->debugfs);
 	devres_release_group(&client->dev, client->devres_group_id);
-err_detach_pm_domain:
-	dev_pm_domain_detach(&client->dev, do_power_on);
 err_clear_wakeup_irq:
 	dev_pm_clear_wake_irq(&client->dev);
 	device_init_wakeup(&client->dev, false);
@@ -636,8 +635,6 @@ static void i2c_device_remove(struct device *dev)
 
 	devres_release_group(&client->dev, client->devres_group_id);
 
-	dev_pm_domain_detach(&client->dev, true);
-
 	dev_pm_clear_wake_irq(&client->dev);
 	device_init_wakeup(&client->dev, false);
 
-- 
2.43.0