On Tue, Sep 16, 2014 at 02:27:15PM -0700, Darren Hart wrote: > > - When reading and writing sysfs device attribute files, avoid dependency > on specific error codes wherever possible. This minimizes coupling to > the error handling implemementation within the kernel. > > In general, failures to read or write sysfs device attributes shall > propogate errors wherever possible. Common errors include, but are not > limited to: > > -EIO: The read or store operation is not supported, typically returned by > the sysfs system itself if the read or store pointer is NULL. > > -ENXIO: The read or store operation failed > > Error codes will not be changed without good reason, and should a change > to error codes result in user-space breakage, it will be fixed, or the > the offending change will be reverted.
sysfs-rules.txt is written for user space? In that case, reverting the change is as much a fix as patching it. > > Userspace applications can, however, expect the format and contents of > the attribute files to remain consistent in the absence of a version > attribute change in the context of a given attributes. ...attribute. That's it for the nit-picking. Frans -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
