linux-kernel - Re: [patch] hw_random: cleanup in hwrng

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Date:	Sun, 9 Feb 2014 17:22:29 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Rusty Russell <rusty@...tcorp.com.au>
Cc:	Dan Carpenter <dan.carpenter@...cle.com>,
	Matt Mackall <mpm@...enic.com>,
	Satoru Takeuchi <satoru.takeuchi@...il.com>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [patch] hw_random: cleanup in hwrng_register()

On Fri, Jan 31, 2014 at 04:18:51PM +1030, Rusty Russell wrote:
> Dan Carpenter <dan.carpenter@...cle.com> writes:
> > My static checker complains that:
> >
> > 	drivers/char/hw_random/core.c:341 hwrng_register()
> > 	warn: we tested 'old_rng' before and it was 'false'
> >
> > The problem is that sometimes we test "if (!old_rng)" and sometimes we
> > test "if (must_register_misc)".  The static checker knows they are
> > equivalent but a human being reading the code could easily be confused.
> >
> > I have simplified the code by removing the "must_register_misc" variable
> > and I have removed the redundant check on "if (!old_rng)".
> >
> > Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
> 
> Yeah, clearer too.
> 
> Reviewed-by: Rusty Russell <rusty@...tcorp.com.au>

Patch applied.
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Email: Herbert Xu <herbert@...dor.apana.org.au>
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