linux-kernel - [PATCH 1/1] firmware: dmi-id: add product

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Message-ID: <20250814064443.1278029-1-crag0715@gmail.com>
Date: Thu, 14 Aug 2025 14:44:39 +0800
From: Crag Wang <crag0715@...il.com>
To: Jean Delvare <jdelvare@...e.com>
Cc: dell.client.kernel@...l.com,
	crag.wang@...l.com,
	Crag Wang <crag0715@...il.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 1/1] firmware: dmi-id: add product_family to modalias as pf

Some devices require product_family information to trigger
conditional actions when the value matches a predefined criterion

$ cat /sys/class/dmi/id/product_family
Dell Pro Max Desktops

$ udevadm info -q all --path=/sys/class/dmi/id | grep MODALIAS
E: MODALIAS=dmi:bvnDellInc.:bvr0.59.39:bd12/16/2024:br0.59:efr0.0:svnDellInc.:pfDellProMaxDesktops:pnDellProMaxMicroFCM2250:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct3:cvr:sku0D14:

$ cat /sys/class/dmi/id/modalias
dmi:bvnDellInc.:bvr0.59.39:bd12/16/2024:br0.59:efr0.0:svnDellInc.:pfDellProMaxDesktops:pnDellProMaxMicroFCM2250:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct3:cvr:sku0D14:

Signed-off-by: Crag Wang <crag0715@...il.com>
---
 drivers/firmware/dmi-id.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/firmware/dmi-id.c b/drivers/firmware/dmi-id.c
index d19c78a78ae3..284652d75cc7 100644
--- a/drivers/firmware/dmi-id.c
+++ b/drivers/firmware/dmi-id.c
@@ -87,6 +87,7 @@ static ssize_t get_modalias(char *buffer, size_t buffer_size)
 		{ "br",  DMI_BIOS_RELEASE },
 		{ "efr", DMI_EC_FIRMWARE_RELEASE },
 		{ "svn", DMI_SYS_VENDOR },
+		{ "pf",  DMI_PRODUCT_FAMILY },
 		{ "pn",  DMI_PRODUCT_NAME },
 		{ "pvr", DMI_PRODUCT_VERSION },
 		{ "rvn", DMI_BOARD_VENDOR },
-- 
2.43.0