linux-kernel - [PATCH] hwmon: (dell-smm) Add Inspiron 3505 to fan type blacklist

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]

Date:   Fri, 18 Mar 2022 19:34:08 +0100
From:   Armin Wolf <W_Armin@....de>
To:     pali@...nel.org
Cc:     jdelvare@...e.com, linux@...ck-us.net, linux-hwmon@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] hwmon: (dell-smm) Add Inspiron 3505 to fan type blacklist

Sadly, while firmware 1.5 fixed temperature labels on my
Inspiron 3505, it also caused fan type calls to take
ca. 4 seconds with the fan being at full speed.
Fix the resulting delays by adding the model to the
blacklist.

Tested on a Dell Inspiron 3505.

Signed-off-by: Armin Wolf <W_Armin@....de>
---
 drivers/hwmon/dell-smm-hwmon.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/hwmon/dell-smm-hwmon.c b/drivers/hwmon/dell-smm-hwmon.c
index a14e810f5598..c34342253d6e 100644
--- a/drivers/hwmon/dell-smm-hwmon.c
+++ b/drivers/hwmon/dell-smm-hwmon.c
@@ -1165,6 +1165,13 @@ static const struct dmi_system_id i8k_blacklist_fan_type_dmi_table[] __initconst
 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Inspiron 580 "),
 		},
 	},
+	{
+		.ident = "Dell Inspiron 3505",
+		.matches = {
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Inspiron 3505"),
+		},
+	},
 	{ }
 };

--
2.30.2