On Fri, 2006-08-18 at 17:41 +0200, Thomas Klein wrote: > Hi Alexey, > > first of all thanks a lot for the extensive review. > > > Alexey Dobriyan wrote: > >> + u64 hret = H_HARDWARE; > > > > Useless assignment here and everywhere. > > > > Initializing returncodes to errorstate is a cheap way to prevent > accidentally returning (uninitalized) success returncodes which > can lead to catastrophic misbehaviour.
If you try to return an uninitialized value the compiler will warn you, you'll then look at the code and realise you missed a case, you might save yourself a bug. By unconditionally initialising you are lying to the compiler, and it can no longer help you. cheers -- Michael Ellerman IBM OzLabs wwweb: http://michael.ellerman.id.au phone: +61 2 6212 1183 (tie line 70 21183) We do not inherit the earth from our ancestors, we borrow it from our children. - S.M.A.R.T Person
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