linux-kernel - RE: [PATCH 2/2] ARM: imx: mach-imx7ulp: warn when imx_soc_device

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Message-ID: <AM0PR04MB421136D0720C912390DF100080410@AM0PR04MB4211.eurprd04.prod.outlook.com>
Date:   Wed, 20 Mar 2019 04:57:00 +0000
From:   Aisheng Dong <aisheng.dong@....com>
To:     Peng Fan <peng.fan@....com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "festevam@...il.com" <festevam@...il.com>,
        dl-linux-imx <linux-imx@....com>,
        Anson Huang <anson.huang@....com>,
        "arnd@...db.de" <arnd@...db.de>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     "van.freenix@...il.com" <van.freenix@...il.com>
Subject: RE: [PATCH 2/2] ARM: imx: mach-imx7ulp: warn when imx_soc_device_init
 fail

> From: Peng Fan
>
> > > > > Follow other i.MX6/7 machince code to check return value of
> > > > > imx_soc_device_init and warn when fail.
> > > > >
> > > > > Also drop of_platform_default_populate, because
> > > > > "arch_initcall_sync(of_platform_default_populate_init);" could
> > > > > be used to populate the device tree.
> > > > >
> > > >
> > > > This could be in separate patch.
> > >
> > > I'll do it in v2 after we agree the change in the first patch.
> > >
> >
> > I think imx7ulp does not have the issue in patch 1.
> 
> Missed to reply you.
> So do you agree to split this patch into two patches ? or leave the code as it is?
> 

A bit more thinking, i wonder that warning may not be quite necessary
for a new patch. 
So probably leave as it is unless we have more strong reasons.
Sorry about that.

Regards
Dong Aisheng

> The first is follow other i.mx6/7 to check return value of imx_soc_device_init.
> The second is drop the call to of_platform_default_populate.
> 
> Thanks,
> Peng
> 
> >
> > Regards
> > Dong Aisheng
> >
> > > >
> > > > > Signed-off-by: Peng Fan <peng.fan@....com>
> > > > > ---
> > > > >  arch/arm/mach-imx/mach-imx7ulp.c | 7 ++++++-
> > > > >  1 file changed, 6 insertions(+), 1 deletion(-)
> > > > >
> > > > > diff --git a/arch/arm/mach-imx/mach-imx7ulp.c
> > > > > b/arch/arm/mach-imx/mach-imx7ulp.c
> > > > > index 11ac71aaf965..6d823f05d9aa 100644
> > > > > --- a/arch/arm/mach-imx/mach-imx7ulp.c
> > > > > +++ b/arch/arm/mach-imx/mach-imx7ulp.c
> > > > > @@ -53,11 +53,16 @@ static void __init
> > > > > imx7ulp_set_revision(void)
> > > > >
> > > > >  static void __init imx7ulp_init_machine(void)  {
> > > > > +	struct device *soc_dev;
> > > > > +
> > > > > +	soc_dev = imx_soc_device_init();
> > > > > +	if (soc_dev == NULL)
> > > > > +		pr_warn("failed to initialize soc device\n");
> > > > > +
> > > >
> > > > Should this be under set revision?
> > >
> > > Just follow other i.MX6/7 platforms practice, I could move this
> > > under set revision in v2 if you prefer.
> > >
> > > Thanks,
> > > Peng.
> > >
> > > >
> > > > Regards
> > > > Dong Aisheng
> > > >
> > > > >  	imx7ulp_pm_init();
> > > > >
> > > > >  	mxc_set_cpu_type(MXC_CPU_IMX7ULP);
> > > > >  	imx7ulp_set_revision();
> > > > > -	of_platform_default_populate(NULL, NULL, imx_soc_device_init());
> > > > >  }
> > > > >
> > > > >  static const char *const imx7ulp_dt_compat[] __initconst = {
> > > > > --
> > > > > 2.16.4