linux-kernel - RE: [PATCH next 2/2] misc: Add Renesas Synchronization Management Unit (SMU) support

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Date:   Mon, 5 Apr 2021 13:53:10 +0000
From:   Min Li <min.li.xe@...esas.com>
To:     Greg KH <gregkh@...uxfoundation.org>
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 next 2/2] misc: Add Renesas Synchronization Management
 Unit (SMU) support

> > >
> > > Any specific reason you are not using the misc_device api?  That
> > > would clean up this driver a lot, there's no need to create a whole
> > > class just for a single driver.
> > >
> >
> > Hi Greg
> >
> > No specific reason. I just didn't know the existence of misc_register API.
> 
> Your file is in drivers/misc/ :)
> 
> > Do you recommend using this API to create the device?
> 
> Yes.
> 
> > If yes, can you tell me how to obtain a appropriate MINOR number from
> > miscdevice.h?
> 
> No need to reserve one, we don't do that anymore, just ask for a dynamic
> value and the next availble one will be given to your driver automatically.
> 
> thanks,
> 
> greg k-h

Thanks, I will change to use misc_register and get back to you.

Thanks

Min