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Message-ID: <YG6kZDlCXs4MGHNw@kroah.com>
Date: Thu, 8 Apr 2021 08:36:20 +0200
From: Greg KH <gregkh@...uxfoundation.org>
To: Min Li <min.li.xe@...esas.com>
Cc: "derek.kiernan@...inx.com" <derek.kiernan@...inx.com>,
"dragan.cvetic@...inx.com" <dragan.cvetic@...inx.com>,
"arnd@...db.de" <arnd@...db.de>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net-next v2 2/2] misc: Add Renesas Synchronization
Management Unit (SMU) support
On Wed, Apr 07, 2021 at 08:12:10PM +0000, Min Li wrote:
> >
> > Why not use the miscdev name field?
> >
> miscdev name field is just a char pointer and I need an static array to manipulate the name with index
Why?
> > So it's a parent? Why not make this a real platform_device pointer and not
> > a device pointer?
> >
>
> It is not parent and mfd field is the parent
Then why are you saving it off?
> > What operations?
> >
>
> The MFD driver will create 2 devices, one is for phc driver and another one is this driver.
> The lock is to make sure these 2 driver's operations are synchronized.
Ok, that should be documented a bit, it wasn't obvious :)
> > Index into what?
> >
>
> index is passed by mfd driver and will be used as part of device name such as "rsmu0"
So you can just look it up from the name?
thanks,
greg k-h
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