On Tue, 2009-12-08 at 08:09 +0100, Pavel Machek wrote: > > > > > That's certainly better. But... why not return signed value? Current > > > > > flowing from the battery is certainly very different from current > > > > > flowing into it... > > > > > > > > You are totally right ;) > > > > > > > > Just test it, when flowing from the battery, the value is negative, and > > > > when flowing into the battery, the value is positive, so, no abs() > > > > needed. thanks! > > > > > > Make it return -value, then. I believe other code uses >0 values for > > > discharge. > > > > Done, but any document/standard about it? > > Not sure, feel free to patch the documentation, too :-). Okay, I will send a documentation(as a separate patch) like them: $ ls Documentation/ABI/testing/sysfs-platform-* Documentation/ABI/testing/sysfs-platform-asus-laptop Documentation/ABI/testing/sysfs-platform-eeepc-laptop Thanks & Regards, Wu Zhangjin