linux-kernel - Re: [PATCH 02/11] mtd: nand_bbt: introduce BBT related data structure

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Date:	Tue, 21 Jun 2016 15:27:14 +0200
From:	Boris Brezillon <boris.brezillon@...e-electrons.com>
To:	Peter Pan <peterpansjtu@...il.com>
Cc:	Brian Norris <computersforpeace@...il.com>,
	David Woodhouse <dwmw2@...radead.org>,
	linux-kernel@...r.kernel.org, linux-mtd@...ts.infradead.org,
	karlzhang@...ron.com, beanhuo@...ron.com,
	Jiancheng Xue <xuejiancheng@...wei.com>,
	Peter Pan <peterpandong@...ron.com>
Subject: Re: [PATCH 02/11] mtd: nand_bbt: introduce BBT related data
 structure

On Fri, 17 Jun 2016 10:38:27 +0800
Peter Pan <peterpansjtu@...il.com> wrote:

> >>
> >> Again, I'm sorry that you had to be the one supporting this transition,
> >> but I don't want to introduce any more quick-and-dirty hacks that we'll
> >> have to maintain until someone decides to tackle the real problem.  
> >
> > No sorry needed. I'd like to do the contribution.  
> 
> I did test on your nand generic patches. And I found two error about nand helper
> functions. Below is my fixing. After my fixing, BBT is functional on
> my platform.
> 

Thanks for testing it (and fixing the implementation). I'll try to send
the series after the 4.8 merge window, unless you want to take care of
it and send a version right now.

> 
> 
> From 2162e8ece4ffa09bb00abe383714a95f4b74aad8 Mon Sep 17 00:00:00 2001
> From: Peter Pan <peterpandong@...ron.com>
> Date: Fri, 17 Jun 2016 10:31:59 +0800
> Subject: [PATCH] mtd: nand: fix nand helper function
> 
> nand_page_size() and nand_eraseblock_to_offs() return
> fault value. Fix them.
> 
> Signed-off-by: Peter Pan <peterpandong@...ron.com>
> ---
>  include/linux/mtd/nand.h | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
> index 583eb40..ffee2a7 100644
> --- a/include/linux/mtd/nand.h
> +++ b/include/linux/mtd/nand.h
> @@ -162,7 +162,7 @@ static inline size_t nand_pages_to_len(struct
> nand_device *nand, int npages)
>   */
>  static inline size_t nand_page_size(struct nand_device *nand)
>  {
> -    return nand->memorg.eraseblocksize;
> +    return nand->memorg.pagesize;
>  }
> 
>  /**
> @@ -197,7 +197,7 @@ static inline size_t nand_eraseblock_size(struct
> nand_device *nand)
>  static inline loff_t nand_eraseblock_to_offs(struct nand_device *nand,
>                           int block)
>  {
> -    return (loff_t)nand->memorg.pagesize * block;
> +    return (loff_t)nand->memorg.eraseblocksize * block;
>  }
> 
>  /**