linux-kernel - Re: [PATCH 3/9] net: ethernet: ti: cpts: rework initialization/deinitialization

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Date:   Wed, 14 Sep 2016 23:59:26 +0300
From:   Grygorii Strashko <grygorii.strashko@...com>
To:     Richard Cochran <richardcochran@...il.com>
CC:     "David S. Miller" <davem@...emloft.net>, <netdev@...r.kernel.org>,
        Mugunthan V N <mugunthanvnm@...com>,
        Sekhar Nori <nsekhar@...com>, <linux-kernel@...r.kernel.org>,
        <linux-omap@...r.kernel.org>, WingMan Kwok <w-kwok2@...com>
Subject: Re: [PATCH 3/9] net: ethernet: ti: cpts: rework
 initialization/deinitialization

On 09/14/2016 11:52 PM, Richard Cochran wrote:
> On Wed, Sep 14, 2016 at 11:37:45PM +0300, Grygorii Strashko wrote:
>> The problem is that if cpts not initialized than pinter on 
>> cpts (in consumer/parent driver - NETCP) will be NULL.
> 
> You made that problem with your "clean up" in this series.
> Previously, cpts was always allocated.

not exactly - it was allocated in CPSW .probe() manually, 
in without this re-work it has to be allocated in NTCP the
same way - manually. So, checks we are discussing here will be still
present, but they will need to be done in CPSW/NETCP drivers -
just one level up and duplicated in both these drivers.

> 
>> So, rx_enable will be unaccessible and cause crash :(
> 
> So just make sure cpts is initialized.

OK. I'll update code this way.

-- 
regards,
-grygorii