i2c: octeon: Add workaround for broken irqs on CN3860
CN3860 does not interrupt the CPU when the i2c status changes. If we get a timeout, and see the status has in fact changed, we know we have this problem, and drop back to polling. Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com> Signed-off-by: NJan Glauber <jglauber@cavium.com> Signed-off-by: NWolfram Sang <wsa@the-dreams.de>
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