diff options
| author | Peng Fan <Peng.Fan@freescale.com> | 2015-01-29 16:33:11 +0800 |
|---|---|---|
| committer | Max Krummenacher <max.krummenacher@toradex.com> | 2016-03-09 14:42:10 +0100 |
| commit | 5b58770673a9c16466814a93176e4c71d8e9c81b (patch) | |
| tree | c812043fe29e1d2b35e60a172ccbb2e68a3aef03 /drivers/mtd | |
| parent | 6167c89f4f544e1a292a2f6608a5c135173e889e (diff) | |
MLK-10178-10 mtd:nand:mxs fix potential dcache issue
DCIMVAC is upgraded to DCCIMVAC for the individual processor
(Cortex-A7) that the DCIMVAC is executed on.
We should follow the linux dma follow. Before DMA read, first
invalidate dcache then after DMA read, invalidate dcache again.
Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
(cherry picked from commit dddb52ebdc6c4919da0103a364563dbe2c100874)
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/mxs_nand.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/mtd/nand/mxs_nand.c b/drivers/mtd/nand/mxs_nand.c index 5a7ef6b5639..077986644ba 100644 --- a/drivers/mtd/nand/mxs_nand.c +++ b/drivers/mtd/nand/mxs_nand.c @@ -7,7 +7,7 @@ * Based on code from LTIB: * Freescale GPMI NFC NAND Flash Driver * - * Copyright (C) 2010-2014 Freescale Semiconductor, Inc. + * Copyright (C) 2010-2015 Freescale Semiconductor, Inc. * Copyright (C) 2008 Embedded Alley Solutions, Inc. * * SPDX-License-Identifier: GPL-2.0+ @@ -456,6 +456,9 @@ static void mxs_nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int length) mxs_dma_desc_append(channel, d); + /* Invalidate caches */ + mxs_nand_inval_data_buf(nand_info); + /* Execute the DMA chain. */ ret = mxs_dma_go(channel); if (ret) { @@ -622,6 +625,9 @@ static int mxs_nand_ecc_read_page(struct mtd_info *mtd, struct nand_chip *nand, mxs_dma_desc_append(channel, d); + /* Invalidate caches */ + mxs_nand_inval_data_buf(nand_info); + /* Execute the DMA chain. */ ret = mxs_dma_go(channel); if (ret) { |