kernel/linux
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ synced 2026-11-10 20:48:12 +00:00
Code Issues Releases Packages Activity

usb: typec: mux: avoid duplicated mux switches

Browse source 
Some devices use combo PHYs (i.e. USB3 + DisplayPort), which also
handle the lane muxing. These PHYs are referenced twice from
the USB-C connector (USB super-speed lines and SBU/AUX lines)
resulting in the mux being configured twice. Avoid this by
dropping duplicates.

This is a re-application of b145c3f29d ("usb: typec: mux: avoid
duplicated mux switches"), with fix derived from usb: typec: mux:
Fix typec_switch_match() .

Fixes: f576c75f95 ("Revert "usb: typec: mux: avoid duplicated mux switches"")
Cc: stable <stable@kernel.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Co-developed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Marek Vasut <marex@nabladev.com>
Tested-by: Jens Glathe <jens.glathe@oldschoolsolutions.biz>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260822072556.490594-1-marex@nabladev.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Marek Vasut 2026-08-22 09:24:58 +02:00 • committed by Greg Kroah-Hartman
commit d50b6442be
1 changed files with 15 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files