[PATCH] Input: i8042 - Never reset on Sony VAIO VGN-CS series

From: Ondrej Zary
Date: Mon Apr 09 2018 - 13:42:55 EST


Resetting i8042 breaks MUX on Sony VAIO VGN-CS. Never reset i8042 on
these machines to fix MUX after suspend.

Signed-off-by: Ondrej Zary <linux@xxxxxxxxxxxxxxxxxxxx>
---
drivers/input/serio/i8042-x86ia64io.h | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h
index 56644c74828c..34793e8bf636 100644
--- a/drivers/input/serio/i8042-x86ia64io.h
+++ b/drivers/input/serio/i8042-x86ia64io.h
@@ -544,16 +544,23 @@ static const struct dmi_system_id __initconst i8042_dmi_forcemux_table[] = {
{ }
};

-/*
- * On some Asus laptops, just running self tests cause problems.
- */
static const struct dmi_system_id i8042_dmi_noselftest_table[] = {
{
+ /*
+ * On some Asus laptops, just running self tests cause problems.
+ */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
DMI_MATCH(DMI_CHASSIS_TYPE, "10"), /* Notebook */
},
},
+ {
+ /* reset breaks MUX on Sony Vaio VGN-CS series */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "VGN-CS"),
+ },
+ },
{ }
};
static const struct dmi_system_id __initconst i8042_dmi_reset_table[] = {
--
Ondrej Zary