From patchwork Fri Aug 31 10:57:37 2012
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Subject: mxc_nand.c on mach-imx/imx53
Date: Fri, 31 Aug 2012 00:57:37 -0000
From: stigge@antcom.de
X-Patchwork-Id: 180947
Message-Id: <504098A1.4050208@antcom.de>
To: =?UTF-8?B?RXJpYyBCw6luYXJk?= <eric@eukrea.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>, linux-mtd@lists.infradead.org,
 "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
 "linux-arm-kernel@lists.infradead.org"
 <linux-arm-kernel@lists.infradead.org>

On 08/31/2012 11:05 AM, Roland Stigge wrote:
> I tried to port this on top of Sascha's patches for imx53, only for mxc v3 for now, as below.
> 
> Unfortunately, I still get:
> 
> ...
> UnCorrectable RS-ECC Error
> UnCorrectable RS-ECC Error
> UnCorrectable RS-ECC Error
> UnCorrectable RS-ECC Error
> UnCorrectable RS-ECC Error
> ...
> 
> from mxc_nand.c's mxc_nand_correct_data_v2_v3(). Maybe there's still sth. missing in the
> error correction code?

With the below incremental fix, it works. :-)

Thanks,

Roland

PS: Will you prepare a patch for l2-mtd.git? I only have an imx53, can't test the v1/v2 etc.
configs.


--- linux-2.6.orig/drivers/mtd/nand/mxc_nand.c
+++ linux-2.6/drivers/mtd/nand/mxc_nand.c
@@ -1141,14 +1141,14 @@ static void mxc_nand_command(struct mtd_
                host->devtype_data->send_cmd(host, command, true);
                mxc_do_addr_cycle(mtd, column, page_addr);
                host->devtype_data->send_read_id(host);
-               host->buf_start = column;
+               host->buf_start = 0;
                break;
 
        case NAND_CMD_PARAM:
                host->devtype_data->send_cmd(host, command, true);
                mxc_do_addr_cycle(mtd, column, page_addr);
                host->devtype_data->send_read_param(host);
-               host->buf_start = column;
+               host->buf_start = 0;
                break;
 
        case NAND_CMD_ERASE1: