linux-kernel - Re: [PATCH] scsi: dc395x: Replace arithmetic addition by bitwise OR

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Message-ID: <251560a0-489f-eb54-d039-5270436117b9@suse.com>
Date:   Wed, 8 Feb 2023 10:26:58 +0100
From:   Oliver Neukum <oneukum@...e.com>
To:     Deepak R Varma <drv@...lo.com>, Ali Akcaagac <aliakc@....de>,
        Jamie Lenehan <lenehan@...bble.org>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        dc395x@...bble.org, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Saurabh Singh Sengar <ssengar@...rosoft.com>,
        Praveen Kumar <kumarpraveen@...ux.microsoft.com>
Subject: Re: [PATCH] scsi: dc395x: Replace arithmetic addition by bitwise OR


On 07.02.23 09:49, Deepak R Varma wrote:
> When adding two bit-field mask values, an OR operation offers higher
> performance over an arithmetic operation.

Hi,

I am sorry, but this change log makes no sense. These are constants.
The compiler turns that into one value in any case.
If you do a clean up, say so.

	Regards
		Oliver