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| author | Haojian Zhuang <haojian.zhuang@marvell.com> | 2009-09-11 19:33:58 +0800 |
|---|---|---|
| committer | Eric Miao <eric.y.miao@gmail.com> | 2009-12-01 09:02:36 +0800 |
| commit | a88bdbb54a9352b916877bfc5e316c44ec1b2d8f (patch) | |
| tree | 504baf6d1b9547446ccc8c686c95499720436832 /drivers/mtd | |
| parent | 70c7d2dd276dfb6aa802186a2be4efe80d380d15 (diff) | |
| download | lwn-a88bdbb54a9352b916877bfc5e316c44ec1b2d8f.tar.gz lwn-a88bdbb54a9352b916877bfc5e316c44ec1b2d8f.zip | |
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: Haojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/pxa3xx_nand.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index 6ea520ae2410..f463ad272d3b 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -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__, |