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b38a0988d7
The i2cdetect command on Linux likes to probe by doing a write of 0 bytes. Rather than always returning success because there was nothing to write, let's actually implement this command. At the moment we only implement for the stm32l. We also don't try to implement the "read of 0" bytes since I don't think anyone uses that. BUG=chrome-os-partner:18778 BRANCH=none TEST=i2cdetect -y -a 20 now detects the right devices Change-Id: Ia159ce9b8c957d5cd11f187f1a179ca5967bf96f Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/50009 Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org>