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84e85bd6f0
If UFP sends invalid VDM responses to the DFP its possible that modep pointer may be NULL. CL qualifies all uses of modep to guarantee that these invalid responses don't cause samus_pd to crash. BRANCH=samus BUG=chromium:476773 TEST=manual, 1. Still successfully negotiate alternate mode (both DP & GFU) with hoho. 2. passes usbpd_DisplayPortSink autotest. Change-Id: If4a611182b5e659c5534c2206132ef76d4e023db Signed-off-by: Todd Broch <tbroch@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/265620 Reviewed-by: Alec Berg <alecaberg@chromium.org>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit