usb: typec: ucsi: displayport: Current CAM OOB index fixup

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Update ucsi_displayport_enter() to return invalid error when the PPM
reports an current alternate mode greater than or equal to
UCSI_MAX_ALTMODES. While here, remove 0xff current cam assignment on
failed GET_CURRENT_CAM response.

Fixes: 04cec690b1 ("usb: typec: ucsi: displayport: Fix OOB altmode array index")
Cc: stable <stable@kernel.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Benson Leung <bleung@chromium.org>
Signed-off-by: Jameson Thies <jthies@google.com>
Link: https://patch.msgid.link/20260917032008.1701888-1-jthies@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Jameson Thies 2026-09-17 03:20:08 +00:00 • committed by Greg Kroah-Hartman

parent 08b2ccd7eb

commit ea31c6498c

1 changed files with 6 additions and 3 deletions

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drivers/usb/typec/ucsi/displayport.c

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