From: Po-Hsu Lin <po-hsu....@canonical.com>

commit a48491c65b513e5cdc3e7a886a4db915f848a5f5 upstream.

It looks like the C15B laptop got another vendor: ByteSpeed LLC.

Avoid AUX loopback on this touchpad as well, thus input subsystem will
be able to recognize a Synaptics touchpad in the AUX port.

BugLink: https://bugs.launchpad.net/bugs/1906128
Signed-off-by: Po-Hsu Lin <po-hsu....@canonical.com>
Link: https://lore.kernel.org/r/20201201054723.5939-1-po-hsu....@canonical.com
Cc: sta...@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torok...@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 drivers/input/serio/i8042-x86ia64io.h |    4 ++++
 1 file changed, 4 insertions(+)

--- a/drivers/input/serio/i8042-x86ia64io.h
+++ b/drivers/input/serio/i8042-x86ia64io.h
@@ -223,6 +223,10 @@ static const struct dmi_system_id __init
                        DMI_MATCH(DMI_SYS_VENDOR, "PEGATRON CORPORATION"),
                        DMI_MATCH(DMI_PRODUCT_NAME, "C15B"),
                },
+               .matches = {
+                       DMI_MATCH(DMI_SYS_VENDOR, "ByteSpeed LLC"),
+                       DMI_MATCH(DMI_PRODUCT_NAME, "ByteSpeed Laptop C15B"),
+               },
        },
        { }
 };


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