blob: 7f86a161214af5389bfb9bef85afc3a307504d0c [file] [log] [blame]
From 351b989e6df8c112c00d0ea135d37af281752375 Mon Sep 17 00:00:00 2001
From: Pacien TRAN-GIRARD <pacien.trangirard@pacien.net>
Date: Fri, 27 Sep 2019 23:19:03 +0200
Subject: [PATCH] platform/x86: dell-laptop: disable kbd backlight on Inspiron
10xx
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commit 10b65e2915b2fcc606d173e98a972850101fb4c4 upstream.
This patch adds a quirk disabling keyboard backlight support for the
Dell Inspiron 1012 and 1018.
Those models wrongly report supporting keyboard backlight control
features (through SMBIOS tokens) even though they're not equipped with
a backlit keyboard. This led to broken controls being exposed
through sysfs by this driver which froze the system when used.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=107651
Signed-off-by: Pacien TRAN-GIRARD <pacien.trangirard@pacien.net>
Reviewed-by: Mario Limonciello <mario.limonciello@dell.com>
Reviewed-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c
index 4e2f76aa98de..7384a1534ce5 100644
--- a/drivers/platform/x86/dell-laptop.c
+++ b/drivers/platform/x86/dell-laptop.c
@@ -33,6 +33,7 @@
struct quirk_entry {
bool touchpad_led;
+ bool kbd_led_not_present;
bool kbd_led_levels_off_1;
bool kbd_missing_ac_tag;
@@ -73,6 +74,10 @@ static struct quirk_entry quirk_dell_latitude_e6410 = {
.kbd_led_levels_off_1 = true,
};
+static struct quirk_entry quirk_dell_inspiron_1012 = {
+ .kbd_led_not_present = true,
+};
+
static struct platform_driver platform_driver = {
.driver = {
.name = "dell-laptop",
@@ -310,6 +315,24 @@ static const struct dmi_system_id dell_quirks[] __initconst = {
},
.driver_data = &quirk_dell_latitude_e6410,
},
+ {
+ .callback = dmi_matched,
+ .ident = "Dell Inspiron 1012",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1012"),
+ },
+ .driver_data = &quirk_dell_inspiron_1012,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Dell Inspiron 1018",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1018"),
+ },
+ .driver_data = &quirk_dell_inspiron_1012,
+ },
{ }
};
@@ -1493,6 +1516,9 @@ static void kbd_init(void)
{
int ret;
+ if (quirks && quirks->kbd_led_not_present)
+ return;
+
ret = kbd_init_info();
kbd_init_tokens();
--
2.7.4