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From: Alex Elder <elder@linaro.org>
To: David Laight <David.Laight@ACULAB.COM>,
	'Manikishan Ghantasala' <manikishanghantasala@gmail.com>,
	Alex Elder <elder@ieee.org>
Cc: Alex Elder <elder@kernel.org>,
	"greybus-dev@lists.linaro.org" <greybus-dev@lists.linaro.org>,
	"linux-staging@lists.linux.dev" <linux-staging@lists.linux.dev>,
	Johan Hovold <johan@kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [greybus-dev] [PATCH] staging: greybus: fixed the coding style, labels should not be indented.
Date: Fri, 4 Jun 2021 07:34:05 -0500	[thread overview]
Message-ID: <613239d4-c4a6-8585-5f9e-0241f0caa5ec@linaro.org> (raw)
In-Reply-To: <c29b5c97f97b48c894917647915bf510@AcuMS.aculab.com>

On 6/4/21 3:13 AM, David Laight wrote:
> Yes, and it isn't at all clear what it actually means.
> If the value of a bool memory location isn't 0 or 1
> what does 'bool_a & bool_b' mean.

I think this discussion is done, but I wanted to point out
that the above expression is incorrect.  It might be valid,
but it would be bad code.  A Boolean, when properly used,
should only be compared with true and false (or the result
of another Boolean expression).  Therefore "&" is not the
right operator, "&&" is.  The reason is similar to why you
would never use ~bool_a, you use !bool_a to invert its value.

					-Alex

      parent reply	other threads:[~2021-06-04 12:34 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-02 13:36 sh4nnu
2021-06-02 13:43 ` Alex Elder
2021-06-02 14:27   ` Manikishan Ghantasala
2021-06-02 14:37     ` Greg Kroah-Hartman
2021-06-02 14:39       ` Manikishan Ghantasala
2021-06-02 17:26       ` [PATCH] checkpatch: Improve the indented label test Joe Perches
2021-06-02 14:38     ` [PATCH] staging: greybus: fixed the coding style, labels should not be indented Alex Elder
2021-06-03 21:22     ` David Laight
2021-06-03 21:45       ` [greybus-dev] " Alex Elder
2021-06-03 21:48         ` David Laight
2021-06-03 21:55           ` Alex Elder
2021-06-04  8:13             ` David Laight
2021-06-04  8:26               ` Joe Perches
2021-06-04  8:33                 ` David Laight
2021-06-04 12:34               ` Alex Elder [this message]

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