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Commit a88bdbb5 authored by Haojian Zhuang's avatar Haojian Zhuang Committed by Eric Miao
Browse files

pxa3xx_nand: fix memory out of bound 



When fetch nand data with non-DMA mode, we should align info->data_size to
32bit, not 8bit.

Signed-off-by: default avatarHaojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: default avatarEric Miao <eric.y.miao@gmail.com>
parent 70c7d2dd

drivers/mtd/nand/pxa3xx_nand.c

+3 −2
Original line number Diff line number Diff line
@@ -9,6 +9,7 @@ 
 * published by the Free Software Foundation.

 */



#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/interrupt.h>

#include <linux/platform_device.h>
@@ -489,7 +490,7 @@ static int handle_data_pio(struct pxa3xx_nand_info *info) 
	switch (info->state) {

	case STATE_PIO_WRITING:

		__raw_writesl(info->mmio_base + NDDB, info->data_buff,

				info->data_size << 2);

				DIV_ROUND_UP(info->data_size, 4));



		enable_int(info, NDSR_CS0_BBD | NDSR_CS0_CMDD);
@@ -501,7 +502,7 @@ static int handle_data_pio(struct pxa3xx_nand_info *info) 
		break;

	case STATE_PIO_READING:

		__raw_readsl(info->mmio_base + NDDB, info->data_buff,

				info->data_size << 2);

				DIV_ROUND_UP(info->data_size, 4));

		break;

	default:

		printk(KERN_ERR "%s: invalid state %d\n", __func__,