tree 0d04b1b5f5b38969fa4c923a691b3483a0d0dd23
parent ce3ebb9f22afaf7d2934fa6bd372774e304baab9
author Simon Glass <sjg@chromium.org> 1393532771 -0700
committer Simon Glass <sjg@chromium.org> 1395108347 -0600

cros_ec: Correct comparison between signed and unsigned numbers

Due to signed/unsigned comparison, '< sizeof(struct)' does not do the right
thing, since if ec_command() returns a -ve number we will consider this be
success.

Adjust all comparisons to avoid this problem.

This error was found with sandbox, which gives a segfault in this case. On
ARM we may instead silently fail.

We should also consider turning on -Wsign-compare to catch this sort of thing
in future.

Reviewed-by: Andrew Chew <achew@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
Tested-by: Andrew Chew <achew@nvidia.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Jimmy Zhang <jimmzhang@nvidia.com>