linux-kernel - Re: [PATCH RESEND v3] tpm: fix an invalid condition in tpm_common

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Message-ID: <20190327042854.GA15397@linux.intel.com>
Date:   Wed, 27 Mar 2019 06:28:54 +0200
From:   Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:     Tadeusz Struk <tadeusz.struk@...el.com>
Cc:     grawity@...il.com, James.Bottomley@...senPartnership.com,
        linux-integrity@...r.kernel.org, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org
Subject: Re: [PATCH RESEND v3] tpm: fix an invalid condition in
 tpm_common_poll

On Tue, Mar 26, 2019 at 08:58:28AM -0700, Tadeusz Struk wrote:
> Hi Jarkko,
> On 3/25/19 7:09 AM, Jarkko Sakkinen wrote:
> > It is still missing the comment I asked to add. Otherwise, it is good.
> > 
> 
> Sorry, I didn't see your email with the suggestion earlier.
> To be honest I'm not sure if this comment adds much value, or if it is
> even correct. The poll doesn't "succeed" or "fail". It just returns
> a mask indicating if there is any data to read or if the user can write.
> 
> Isn't the commit message + 'git blame' enough to remember why it was
> done this way?

Comments in the code have also their time and place especially when
doing code reviews. Usually I like to have something in a site where
there has been a race even if it was for fairly trivial reason. If you
want to refine the comment to be more to the point, that is perfectly
fine.

/Jarkko