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Date: Fri, 18 Jun 2010 18:59:47 +0200
From: John Ogness <john.ogness@...utronix.de>
To: Sascha Hauer <kernel@...gutronix.de>
Cc: LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 1/5] mtd: mxc_nand fixups
This patch avoids byte access to the NFC buffer. Byte access to the
NFC is not allowed.
The patch is against linux-next 20100618.
Signed-off-by: John Ogness <john.ogness@...utronix.de>
---
drivers/mtd/nand/mxc_nand.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
Index: linux-next-20100618/drivers/mtd/nand/mxc_nand.c
===================================================================
--- linux-next-20100618.orig/drivers/mtd/nand/mxc_nand.c
+++ linux-next-20100618/drivers/mtd/nand/mxc_nand.c
@@ -289,16 +289,16 @@ static void send_read_id(struct mxc_nand
/* Wait for operation to complete */
wait_op_done(host, true);
+ memcpy(host->data_buf, host->main_area0, 16);
+
if (this->options & NAND_BUSWIDTH_16) {
- void __iomem *main_buf = host->main_area0;
/* compress the ID info */
- writeb(readb(main_buf + 2), main_buf + 1);
- writeb(readb(main_buf + 4), main_buf + 2);
- writeb(readb(main_buf + 6), main_buf + 3);
- writeb(readb(main_buf + 8), main_buf + 4);
- writeb(readb(main_buf + 10), main_buf + 5);
+ host->data_buf[1] = host->data_buf[2];
+ host->data_buf[2] = host->data_buf[4];
+ host->data_buf[3] = host->data_buf[6];
+ host->data_buf[4] = host->data_buf[8];
+ host->data_buf[5] = host->data_buf[10];
}
- memcpy(host->data_buf, host->main_area0, 16);
}
/* This function requests the NANDFC to perform a read of the
--
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