linux-kernel - Re: [PATCH v3 3/4] mtd: rawnand: Add support manufacturer specific suspend/resume operation

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Message-ID: <OF5C883176.AD73134D-ON48258528.000F5185-48258528.001F3544@mxic.com.tw>
Date:   Wed, 11 Mar 2020 13:40:52 +0800
From:   masonccyang@...c.com.tw
To:     "Boris Brezillon" <boris.brezillon@...labora.com>
Cc:     allison@...utok.net, bbrezillon@...nel.org,
        frieder.schrempf@...tron.de, juliensu@...c.com.tw,
        linux-kernel@...r.kernel.org, linux-mtd@...ts.infradead.org,
        miquel.raynal@...tlin.com, rfontana@...hat.com, richard@....at,
        s.hauer@...gutronix.de, stefan@...er.ch, tglx@...utronix.de,
        vigneshr@...com, yuehaibing@...wei.com
Subject: Re: [PATCH v3 3/4] mtd: rawnand: Add support manufacturer specific suspend/resume
 operation

Hi Boris,

> > diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h
> > index bc2fa3c..c0055ed 100644
> > --- a/include/linux/mtd/rawnand.h
> > +++ b/include/linux/mtd/rawnand.h
> > @@ -1064,6 +1064,8 @@ struct nand_legacy {
> >   * @lock:      lock protecting the suspended field. Also used to
> >   *         serialize accesses to the NAND device.
> >   * @suspended:      set to 1 when the device is suspended, 0 when 
it's not.
> > + * @_suspend:      [REPLACEABLE] specific NAND device suspend 
operation
> > + * @_resume:      [REPLACEABLE] specific NAND device resume operation
> >   * @bbt:      [INTERN] bad block table pointer
> >   * @bbt_td:      [REPLACEABLE] bad block table descriptor for flash
> >   *         lookup.
> > @@ -1119,6 +1121,8 @@ struct nand_chip {
> > 
> >     struct mutex lock;
> >     unsigned int suspended : 1;
> > +   int (*_suspend)(struct nand_chip *chip);
> > +   void (*_resume)(struct nand_chip *chip);
> 
> I thought we agreed on not prefixing new hooks with _ ?

For [PATCH v2] series, you mentioned to drop the _ prefix 
of _lock/_unlock only and we finally patched to lock_area/unlock_area.

thanks for your time & review.
Mason

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