K 10 svn:author V 3 ian K 8 svn:date V 27 2015-10-09T23:58:19.715606Z K 7 svn:log V 555 Return only IIC_Exxxx status values from iicbus-layer functions. Most of these functions are thin wrappers around calling the hardware-layer driver, but some of them do sanity checks and return an error. Since the hardware layer can only return IIC_Exxxxx status values, the iicbus helper functions must also adhere to that, so that drivers at higher layers can assume that any non-zero status value is an IIC_Exxxx value that provides details about what happened at the hardware layer (sometimes those details are important for certain slave drivers). END