Ubuntu-focal-kernel/drivers/usb/typec
Abhishek Pandit-Subedi 4bd04ccd5e usb: typec: ucsi: Fix null pointer dereference in trace
BugLink: https://bugs.launchpad.net/bugs/2081278

[ Upstream commit 99516f76db48e1a9d54cdfed63c1babcee4e71a5 ]

ucsi_register_altmode checks IS_ERR for the alt pointer and treats
NULL as valid. When CONFIG_TYPEC_DP_ALTMODE is not enabled,
ucsi_register_displayport returns NULL which causes a NULL pointer
dereference in trace. Rather than return NULL, call
typec_port_register_altmode to register DisplayPort alternate mode
as a non-controllable mode when CONFIG_TYPEC_DP_ALTMODE is not enabled.

Reviewed-by: Benson Leung <bleung@chromium.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Jameson Thies <jthies@google.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20240510201244.2968152-2-jthies@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
2024-09-27 10:50:30 +02:00
..
altmodes
mux
tcpm usb: typec: tcpci: add generic tcpci fallback compatible 2024-06-07 15:01:41 +02:00
ucsi usb: typec: ucsi: Fix null pointer dereference in trace 2024-09-27 10:50:30 +02:00
Kconfig
Makefile
bus.c
bus.h
class.c usb: typec: class: fix typec_altmode_put_partner to put plugs 2024-02-29 15:23:39 +01:00
mux.c
tps6598x.c