linux-kernel - Re: [PATCH] net: ethernet: litex: Add the dependency on HAS

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Message-ID: <20220208012836.GA6024@chq-T47>
Date:   Tue, 8 Feb 2022 09:28:36 +0800
From:   Cai Huoqing <cai.huoqing@...ux.dev>
To:     Joel Stanley <joel@....id.au>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Karol Gugala <kgugala@...micro.com>,
        Mateusz Holenko <mholenko@...micro.com>,
        Gabriel Somlo <gsomlo@...il.com>,
        Cai Huoqing <caihuoqing@...du.com>,
        Networking <netdev@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] net: ethernet: litex: Add the dependency on HAS_IOMEM

On 07 2月 22 09:25:42, Joel Stanley wrote:
> On Mon, 7 Feb 2022 at 08:49, Cai Huoqing <cai.huoqing@...ux.dev> wrote:
> >
> > The helper function devm_platform_ioremap_resource_xxx()
> > needs HAS_IOMEM enabled, so add the dependency on HAS_IOMEM.
> >
> > Fixes: 464a57281f29 ("net/mlxbf_gige: Make use of devm_platform_ioremap_resourcexxx()")
> 
> That looks wrong...
> 
> $ git show --oneline --stat  464a57281f29
> 464a57281f29 net/mlxbf_gige: Make use of devm_platform_ioremap_resourcexxx()
>  drivers/net/ethernet/litex/litex_liteeth.c                 |  7 ++-----
>  drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c | 21
> +++------------------
>  drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_mdio.c |  7 +------
>  drivers/net/ethernet/ni/nixge.c
> 
> That's a strange commit message for the litex driver. Similarly for
> the ni driver. Did something go wrong there?
no, ni driver has the dependency on HAS_IOMEM in
drivers/net/ethernet/ni/Kconfig.
> 
> A better fixes line would be ee7da21ac4c3be1f618b6358e0a38739a5d1773e,
ok.
Thanks
Cai
> as the original driver addition also has the iomem dependency.
> 
> > Signed-off-by: Cai Huoqing <cai.huoqing@...ux.dev>
> > ---
> >  drivers/net/ethernet/litex/Kconfig | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/net/ethernet/litex/Kconfig b/drivers/net/ethernet/litex/Kconfig
> > index f99adbf26ab4..04345b929d8e 100644
> > --- a/drivers/net/ethernet/litex/Kconfig
> > +++ b/drivers/net/ethernet/litex/Kconfig
> > @@ -17,7 +17,7 @@ if NET_VENDOR_LITEX
> >
> >  config LITEX_LITEETH
> >         tristate "LiteX Ethernet support"
> > -       depends on OF
> > +       depends on OF && HAS_IOMEM
> >         help
> >           If you wish to compile a kernel for hardware with a LiteX LiteEth
> >           device then you should answer Y to this.
> > --
> > 2.25.1
> >