linux-kernel - Re: [PATCH] btrfs: initialize return variable

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Date:   Mon, 3 May 2021 15:51:18 +0200
From:   David Sterba <dsterba@...e.cz>
To:     trix@...hat.com
Cc:     clm@...com, josef@...icpanda.com, dsterba@...e.com,
        linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] btrfs: initialize return variable

On Fri, Apr 30, 2021 at 11:06:55AM -0700, trix@...hat.com wrote:
> From: Tom Rix <trix@...hat.com>
> 
> Static analysis reports this problem
> free-space-cache.c:3965:2: warning: Undefined or garbage value returned
>   return ret;
>   ^~~~~~~~~~
> 
> ret is set in the node handling loop.
> Treat doing nothing as a success and initialize ret to 0.

Right, though it's unlikely the loop won't run at least once, having the
ret initialized is safe. Patch added to misc-next, thanks.