linux-kernel - Re: [PATCH net] net: ethernet: adi: adin1110: Fix some error handling path in adin1110_read

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Message-ID: <20241007154600.GH32733@kernel.org>
Date: Mon, 7 Oct 2024 16:46:00 +0100
From: Simon Horman <horms@...nel.org>
To: Jakub Kicinski <kuba@...nel.org>
Cc: Dan Carpenter <dan.carpenter@...aro.org>,
	Christophe JAILLET <christophe.jaillet@...adoo.fr>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>,
	Lennart Franzen <lennart@...omain.com>,
	Alexandru Tachici <alexandru.tachici@...log.com>,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH net] net: ethernet: adi: adin1110: Fix some error
 handling path in adin1110_read_fifo()

On Fri, Oct 04, 2024 at 11:09:52AM -0700, Jakub Kicinski wrote:
> On Fri, 4 Oct 2024 14:47:22 +0300 Dan Carpenter wrote:
> > It's a pity that deliberately doing a "return ret;" when ret is zero is so
> > common.  Someone explained to me that it was "done deliberately to express that
> > we were propagating the success from frob_whatever()".  No no no!
> 
> FWIW I pitched to Linus that we should have a err_t of some sort for
> int variables which must never be returned with value of 0.
> He wasn't impressed, but I still think it would be useful :)

FWIIW, I think something like that would be quite nice.