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From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Boris Brezillon <boris.brezillon@collabora.com>
Cc: Vignesh Raghavendra <vigneshr@ti.com>,
	Tudor Ambarus <Tudor.Ambarus@microchip.com>,
	Julien Su <juliensu@mxic.com.tw>,
	Richard Weinberger <richard@nod.at>,
	linux-mtd@lists.infradead.org,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	Mason Yang <masonccyang@mxic.com.tw>,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v9 4/9] mtd: rawnand: Use nanddev_get_ecc_requirements() when relevant
Date: Wed, 3 Jun 2020 12:30:32 +0200	[thread overview]
Message-ID: <20200603123032.0c70b9fd@xps13> (raw)
In-Reply-To: <20200602180016.2adefd73@collabora.com>


Boris Brezillon <boris.brezillon@collabora.com> wrote on Tue, 2 Jun
2020 18:00:16 +0200:

> On Tue,  2 Jun 2020 16:31:19 +0200
> Miquel Raynal <miquel.raynal@bootlin.com> wrote:
> 
> 
> > diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c
> > index 1ce2cbe72e4c..e8e22d79f422 100644
> > --- a/drivers/mtd/nand/raw/nand_base.c
> > +++ b/drivers/mtd/nand/raw/nand_base.c
> > @@ -4725,6 +4725,9 @@ static inline bool is_full_id_nand(struct nand_flash_dev *type)
> >  static bool find_full_id_nand(struct nand_chip *chip,
> >  			      struct nand_flash_dev *type)
> >  {
> > +	struct nand_device *base = &chip->base;
> > +	struct nand_ecc_props *requirements =
> > +		(struct nand_ecc_props *)nanddev_get_ecc_requirements(base);  
> 
> Ouch, that sounds wrong. How about introducing a
> nanddev_set_ecc_requirements() helper instead? The same applies to all
> places where you have this cast.

A setter helper is very helpful here, I should have done that in the
first place.

> 
> > diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
> > index e572d1600f63..0b89da54bef2 100644
> > --- a/include/linux/mtd/nand.h
> > +++ b/include/linux/mtd/nand.h
> > @@ -527,7 +527,7 @@ nanddev_get_ecc_conf(struct nand_device *nand)
> >   *                                  device
> >   * @nand: NAND device
> >   */
> > -const struct nand_ecc_props *
> > +static inline const struct nand_ecc_props *
> >  nanddev_get_ecc_requirements(struct nand_device *nand)  
> 
> Looks like this should be squashed in patch 2.
> 
> >  {
> >  	return &nand->eccreq;  
> 

Oh right.

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WARNING: multiple messages have this Message-ID (diff)
From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Boris Brezillon <boris.brezillon@collabora.com>
Cc: Vignesh Raghavendra <vigneshr@ti.com>,
	Tudor Ambarus <Tudor.Ambarus@microchip.com>,
	Julien Su <juliensu@mxic.com.tw>,
	Richard Weinberger <richard@nod.at>,
	linux-mtd@lists.infradead.org,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	Mason Yang <masonccyang@mxic.com.tw>,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v9 4/9] mtd: rawnand: Use nanddev_get_ecc_requirements() when relevant
Date: Wed, 3 Jun 2020 12:30:32 +0200	[thread overview]
Message-ID: <20200603123032.0c70b9fd@xps13> (raw)
In-Reply-To: <20200602180016.2adefd73@collabora.com>


Boris Brezillon <boris.brezillon@collabora.com> wrote on Tue, 2 Jun
2020 18:00:16 +0200:

> On Tue,  2 Jun 2020 16:31:19 +0200
> Miquel Raynal <miquel.raynal@bootlin.com> wrote:
> 
> 
> > diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c
> > index 1ce2cbe72e4c..e8e22d79f422 100644
> > --- a/drivers/mtd/nand/raw/nand_base.c
> > +++ b/drivers/mtd/nand/raw/nand_base.c
> > @@ -4725,6 +4725,9 @@ static inline bool is_full_id_nand(struct nand_flash_dev *type)
> >  static bool find_full_id_nand(struct nand_chip *chip,
> >  			      struct nand_flash_dev *type)
> >  {
> > +	struct nand_device *base = &chip->base;
> > +	struct nand_ecc_props *requirements =
> > +		(struct nand_ecc_props *)nanddev_get_ecc_requirements(base);  
> 
> Ouch, that sounds wrong. How about introducing a
> nanddev_set_ecc_requirements() helper instead? The same applies to all
> places where you have this cast.

A setter helper is very helpful here, I should have done that in the
first place.

> 
> > diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
> > index e572d1600f63..0b89da54bef2 100644
> > --- a/include/linux/mtd/nand.h
> > +++ b/include/linux/mtd/nand.h
> > @@ -527,7 +527,7 @@ nanddev_get_ecc_conf(struct nand_device *nand)
> >   *                                  device
> >   * @nand: NAND device
> >   */
> > -const struct nand_ecc_props *
> > +static inline const struct nand_ecc_props *
> >  nanddev_get_ecc_requirements(struct nand_device *nand)  
> 
> Looks like this should be squashed in patch 2.
> 
> >  {
> >  	return &nand->eccreq;  
> 

Oh right.

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply	other threads:[~2020-06-03 10:31 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-02 14:31 [PATCH v9 0/9] Preparation to the generic ECC engine abstraction Miquel Raynal
2020-06-02 14:31 ` Miquel Raynal
2020-06-02 14:31 ` [PATCH v9 1/9] mtd: nand: Create a helper to extract the ECC configuration Miquel Raynal
2020-06-02 14:31   ` Miquel Raynal
2020-06-02 15:51   ` Boris Brezillon
2020-06-02 15:51     ` Boris Brezillon
2020-06-02 14:31 ` [PATCH v9 2/9] mtd: spinand: Use nanddev_get_ecc_conf() when relevant Miquel Raynal
2020-06-02 14:31   ` Miquel Raynal
2020-06-02 14:31 ` [PATCH v9 3/9] mtd: nand: Create a helper to extract the ECC requirements Miquel Raynal
2020-06-02 14:31   ` Miquel Raynal
2020-06-02 14:31 ` [PATCH v9 4/9] mtd: rawnand: Use nanddev_get_ecc_requirements() when relevant Miquel Raynal
2020-06-02 14:31   ` Miquel Raynal
2020-06-02 16:00   ` Boris Brezillon
2020-06-02 16:00     ` Boris Brezillon
2020-06-03 10:30     ` Miquel Raynal [this message]
2020-06-03 10:30       ` Miquel Raynal
2020-06-02 14:31 ` [PATCH v9 5/9] mtd: nand: Convert generic NAND bits to use the ECC framework Miquel Raynal
2020-06-02 14:31   ` Miquel Raynal
2020-06-02 16:03   ` Boris Brezillon
2020-06-02 16:03     ` Boris Brezillon
2020-06-03 10:29     ` Miquel Raynal
2020-06-03 10:29       ` Miquel Raynal
2020-06-02 14:31 ` [PATCH v9 6/9] mtd: rawnand: Hide the generic OOB layout objects behind helpers Miquel Raynal
2020-06-02 14:31   ` Miquel Raynal
2020-06-02 16:05   ` Boris Brezillon
2020-06-02 16:05     ` Boris Brezillon
2020-06-02 14:31 ` [PATCH v9 7/9] mtd: rawnand: Write a compatibility layer Miquel Raynal
2020-06-02 14:31   ` Miquel Raynal
2020-06-02 14:31 ` [PATCH v9 8/9] mtd: rawnand: Move generic OOB layouts to the ECC framework Miquel Raynal
2020-06-02 14:31   ` Miquel Raynal
2020-06-02 14:31 ` [PATCH v9 9/9] mtd: rawnand: Move the user input parsing bits " Miquel Raynal
2020-06-02 14:31   ` Miquel Raynal
2020-06-02 16:18   ` Boris Brezillon
2020-06-02 16:18     ` Boris Brezillon
2020-06-02 16:21   ` Boris Brezillon
2020-06-02 16:21     ` Boris Brezillon
2020-06-03 12:58     ` Miquel Raynal
2020-06-03 12:58       ` Miquel Raynal
2020-06-03 13:05       ` Boris Brezillon
2020-06-03 13:05         ` Boris Brezillon
2020-06-02 16:23   ` Boris Brezillon
2020-06-02 16:23     ` Boris Brezillon
2020-06-02 16:33 ` [PATCH v9 0/9] Preparation to the generic ECC engine abstraction Boris Brezillon
2020-06-02 16:33   ` Boris Brezillon

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