linux-kernel - Re: [PATCH 1/2] powerpc/module_64: Improve restore

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Message-ID: <Y9EtohjVnoJLqccx@alley>
Date:   Wed, 25 Jan 2023 14:24:50 +0100
From:   Petr Mladek <pmladek@...e.com>
To:     Josh Poimboeuf <jpoimboe@...nel.org>
Cc:     Michael Ellerman <mpe@...erman.id.au>,
        live-patching@...r.kernel.org, Nicholas Piggin <npiggin@...il.com>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        Song Liu <song@...nel.org>
Subject: Re: [PATCH 1/2] powerpc/module_64: Improve restore_r2() return
 semantics

On Tue 2023-01-24 19:38:04, Josh Poimboeuf wrote:
> restore_r2() returns 1 on success, which is surprising for a non-boolean
> function.  Change it to return 0 on success and -errno on error to match
> kernel coding convention.
> 
> Signed-off-by: Josh Poimboeuf <jpoimboe@...nel.org>

Looks good:

Reviewed-by: Petr Mladek <pmladek@...e.com>

It is in the right direction. Just note that there are more functions
with the boolean semantic passed via int return value. But there
are also other functions already using the 0/-E* return values so
this is rather positive change.

Best Regards,
Petr