usb: typec: tps6598x: Remove VLA usage
In the quest to remove all stack VLA usage from the kernel[1], this uses the maximum buffer size and adds a sanity check. While 25 bytes is the size of the largest current things coming through, Heikki Krogerus pointed out that the actual max in 64 bytes, as per ch 1.3.2 http://www.ti.com/lit/ug/slvuan1a/slvuan1a.pdf [1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.comSigned-off-by: Kees Cook <keescook@chromium.org> Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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