linux-kernel - [PATCH v7 19/22] ACPI: platform_profile: Notify class device from platform_profile

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Message-ID: <20241119171739.77028-20-mario.limonciello@amd.com>
Date: Tue, 19 Nov 2024 11:17:36 -0600
From: Mario Limonciello <mario.limonciello@....com>
To: Hans de Goede <hdegoede@...hat.com>, Ilpo Järvinen
	<ilpo.jarvinen@...ux.intel.com>
CC: "Rafael J . Wysocki" <rafael@...nel.org>, Len Brown <lenb@...nel.org>,
	Maximilian Luz <luzmaximilian@...il.com>, Lee Chun-Yi <jlee@...e.com>, "Shyam
 Sundar S K" <Shyam-sundar.S-k@....com>, Corentin Chary
	<corentin.chary@...il.com>, "Luke D . Jones" <luke@...nes.dev>, Ike Panhc
	<ike.pan@...onical.com>, Henrique de Moraes Holschuh <hmh@....eng.br>,
	"Alexis Belmonte" <alexbelm48@...il.com>, Uwe Kleine-König
	<u.kleine-koenig@...gutronix.de>, Ai Chao <aichao@...inos.cn>, Gergo Koteles
	<soyer@....hu>, open list <linux-kernel@...r.kernel.org>, "open list:ACPI"
	<linux-acpi@...r.kernel.org>, "open list:MICROSOFT SURFACE PLATFORM PROFILE
 DRIVER" <platform-driver-x86@...r.kernel.org>, "open list:THINKPAD ACPI
 EXTRAS DRIVER" <ibm-acpi-devel@...ts.sourceforge.net>, Mark Pearson
	<mpearson-lenovo@...ebb.ca>, Matthew Schwartz <matthew.schwartz@...ux.dev>,
	Mario Limonciello <mario.limonciello@....com>
Subject: [PATCH v7 19/22] ACPI: platform_profile: Notify class device from platform_profile_notify()

When a driver has called platform_profile_notify() both the legacy sysfs
interface and the class device should be notified as userspace may listen
to either.

Signed-off-by: Mario Limonciello <mario.limonciello@....com>
---
v7:
 * Use class_for_each_device
---
 drivers/acpi/platform_profile.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/acpi/platform_profile.c b/drivers/acpi/platform_profile.c
index ca997f4e9a5cb..e88b355a72112 100644
--- a/drivers/acpi/platform_profile.c
+++ b/drivers/acpi/platform_profile.c
@@ -402,6 +402,10 @@ void platform_profile_notify(struct platform_profile_handler *pprof)
 {
 	if (!cur_profile)
 		return;
+	scoped_cond_guard(mutex_intr, return, &profile_lock) {
+		class_for_each_device(&platform_profile_class, NULL, NULL,
+				      _notify_class_profile);
+	}
 	sysfs_notify(acpi_kobj, NULL, "platform_profile");
 }
 EXPORT_SYMBOL_GPL(platform_profile_notify);
-- 
2.43.0