Re: [PATCH 4/4] alpha: Move two assignments for the variable "res" in srm_env_proc_write()

From: Al Viro
Date: Wed Jan 18 2017 - 09:11:12 EST


On Wed, Jan 18, 2017 at 12:50:17PM +0100, SF Markus Elfring wrote:
> From: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
> Date: Wed, 18 Jan 2017 12:08:44 +0100
>
> A local variable was set to an error code in two cases before a concrete
> error situation was detected. Thus move the corresponding assignment into
> an if branch to indicate a software failure there.
>
> This issue was detected by using the Coccinelle software.

Why the hell is that an issue? It's a common enough idiom, and while these
functions are far from being hot paths, blind patches like that are very
much to be discouraged. NAK.