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SubjectRe: [PATCH] fs/eventpoll: error handling micro-cleanup
On Sun, 1 Oct 2006, Jeff Garzik wrote:

> Davide Libenzi wrote:
> > On Sun, 1 Oct 2006, Jeff Garzik wrote:
> >
> > > While reviewing the 'may be used uninitialized' bogus gcc warnings,
> > > I noticed that an error code assignment was only needed if an error had
> > > actually occured.
> >
> > But that saved one line of code, and there are countless occurences in the
> > kernel of such code pattern ;)
>
> I'm not sure there are countless occurrences with PTR_ERR(). The line is
> incorrect (but harmless) if inode is a valid pointer...

I just tried a `find /usr/src/linux-2.6.16/ -type f -exec grep -H -C 2 PTR_ERR {} \;`
and looked at the cases where the error variable is assigned in any case
before the test. Same code pattern as, like:
error = -EFAULT;
if (copy_from_user(...))
goto kaboom;
Again, expect a big patch if you're gonna fix all those ;)



- Davide


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