linux-kernel - Re: [PATCH v3 3/3] mtd/nand : workaround for Freescale FCM to support large-page Nand chip

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Date:	Tue, 22 Nov 2011 23:04:18 +0200
From:	Artem Bityutskiy <dedekind1@...il.com>
To:	b35362@...escale.com
Cc:	dwmw2@...radead.org, Artem.Bityutskiy@...ia.com,
	linux-mtd@...ts.infradead.org, linuxppc-dev@...ts.ozlabs.org,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	leoli@...escale.com, scottwood@...escale.com,
	Liu Shuo <Shuo.Liu@...escale.com>,
	Shengzhou Liu <Shengzhou.Liu@...escale.com>
Subject: Re: [PATCH v3 3/3] mtd/nand : workaround for Freescale FCM to
 support large-page Nand chip

On Tue, 2011-11-15 at 17:29 +0800, b35362@...escale.com wrote:
> +               /*
> +                * Freescale FCM controller has a 2K size limitation of buffer
> +                * RAM, so elbc_fcm_ctrl->buffer have to be used if writesize
> +                * of chip is greater than 2048.
> +                * We malloc a large enough buffer at this point, because we
> +                * don't know writesize before calling nand_scan(). We will
> +                * re-malloc later if needed.
> +                */
> +               elbc_fcm_ctrl->buffer = kmalloc(4096 * 6, GFP_KERNEL);
> +               if (!elbc_fcm_ctrl->buffer)
> +                       return -ENOMEM; 

Why 4096*6? Judging from the comment it should be 4096.

Artem.

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