On Mon, 26 Dec 2016, Linus Torvalds wrote:
> On Dec 26, 2016 4:04 PM, "Alan Stern" wrote:
>
>
> Note that the usage of tmp in the "if (unlikely(req->td->dmadesc == 0)) {"
> branch really is not conflicting, because that branch breaks out of the
> enclosing "while" loop.
>
>
> No.
>
> Look closer.
>
> It does indeed breast out of the loop, but before it dies that, it uses
> "tmp" again. And it wants the *old* tmp, not the new one..
Are you certain that it doesn't want the new value of tmp? How can you
tell? -- it was not immediately obvious to me. This was what I had in
mind when I wrote that it wasn't clear whether your patch was entirely
correct.
Alan Stern
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