netdev - Re: [PATCH] net: delete "<< 1U" cargo-culting

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Message-ID: <b3faaa6387edd97c93862cd6838808d051e338e6.camel@redhat.com>
Date: Tue, 18 Jul 2023 12:47:50 +0200
From: Paolo Abeni <pabeni@...hat.com>
To: Alexey Dobriyan <adobriyan@...il.com>, davem@...emloft.net, 
	edumazet@...gle.com, kuba@...nel.org
Cc: netdev@...r.kernel.org
Subject: Re: [PATCH] net: delete "<< 1U" cargo-culting

On Sat, 2023-07-15 at 13:19 +0300, Alexey Dobriyan wrote:
> 6.5.7 §3 "Bitwise shift operators" clearly states that
> 
>         The type of the result is that of the promoted left operand
> 
> All those integer constant suffixes in the right operand are pointless,
> delete them.

Indeed. Still this patch is quite invasive and the net benefit looks
quite marginal - if any at all.

Older compiler could adhere to the standard less strictly or macro
expansion - when the left '<<' operand is a macro argument - could be
tricky.

I think we are better of not applying this.

Cheers,

Paolo