linux-kernel - Re: [PATCH 2/6] openrisc: uaccess: Fix sparse address space warnings

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Date:   Tue, 4 Aug 2020 22:46:10 +0200
From:   Luc Van Oostenryck <luc.vanoostenryck@...il.com>
To:     Stafford Horne <shorne@...il.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Jonas Bonn <jonas@...thpole.se>,
        Stefan Kristiansson <stefan.kristiansson@...nalahti.fi>,
        openrisc@...ts.librecores.org
Subject: Re: [PATCH 2/6] openrisc: uaccess: Fix sparse address space warnings

On Tue, Aug 04, 2020 at 01:23:50PM +0900, Stafford Horne wrote:
> The OpenRISC user access functions put_user(), get_user() and
> clear_user() were missing proper sparse annotations.  This generated
> warnings like the below.
> 
> This patch adds the annotations to fix the warnings.
> 
> Example warnings:
> 
> net/ipv4/ip_sockglue.c:759:29: warning: incorrect type in argument 1 (different address spaces)
> net/ipv4/ip_sockglue.c:759:29:    expected void const volatile [noderef] __user *
> net/ipv4/ip_sockglue.c:759:29:    got int const *__gu_addr
> net/ipv4/ip_sockglue.c:764:29: warning: incorrect type in initializer (different address spaces)
> net/ipv4/ip_sockglue.c:764:29:    expected unsigned char const *__gu_addr
> net/ipv4/ip_sockglue.c:764:29:    got unsigned char [noderef] __user *
> 
> Signed-off-by: Stafford Horne <shorne@...il.com>

Look good to me.

-- Luc