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96470c4dfb
Since there is no KEYPROTO task on chromebox such as fizz and sion, lpc driver doesn't declare KBC IBF/OBE ISRs for these events. If host put data in ec's KBC input buffer unexpectedly, exception_panic() will be executed in default_handler. Then we will see ec print "=== PROCESS EXCEPTION: 29 ====== xPSR: 01000000 ===" message without any hard fault and reset. This CL fixed this symptom by turning off KBC if there is no KEYPROTO task. We also run suspend stress test on fizz and no watchdog reset symptom occurred. BRANCH=none BUG=b:72353876 TEST=No build errors. Run suspend stress test on fizz and no watchdog reset occurred. Change-Id: I4744fac0d6fb2628849c728d4860509434fa2cbb Signed-off-by: Mulin Chao <mlchao@nuvoton.com> Reviewed-on: https://chromium-review.googlesource.com/899706 Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org> Reviewed-by: Furquan Shaikh <furquan@chromium.org> Reviewed-by: Duncan Laurie <dlaurie@google.com>