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Heikki Krogerus
3f345e907a
The driver must make sure there is an actual connection
before checking details about the USB Power Delivery
contract. Those details are not valid unless there is a
connection.
This fixes NULL pointer dereference that is caused by an
attempt to register bogus partner alternate mode that the
firmware on some platform may report before the actual
connection.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=215117
Fixes: 6cbe4b2d5a ("usb: typec: ucsi: Check the partner alt modes always if there is PD contract")
Reported-by: Chris Hixon <[email protected]>
Signed-off-by: Heikki Krogerus <[email protected]>
Link: https://lore.kernel.org/r/[email protected]/
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>