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6b24cff09b
As the version string grows longer, reading it in 4 byte chunks
becomes more and more expensive, the overhead of setting up a separate
SPI transaction per very chunk is just too much.
There is no reason not to allow the host to read as many bytes at a
time as it requires (limiting it by the maximum version string buffer
size of course).
BRANCH=none
BUG=chrome-os-partner:55558
TEST=verified that the version string is still read properly by the
TPM driver on Kevin
Change-Id: Ib76cd151e8dc32374f87135af36266b4ec725a56
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/364831
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit For instructions on building from source, refer to http://www.chromium.org/chromium-os/ec-development/getting-started-building-ec-images-quickly