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authorHuang Shijie <b32955@freescale.com>2012-03-12 10:22:18 +0800
committerDavid Woodhouse <David.Woodhouse@intel.com>2012-03-27 00:56:52 +0100
commit09ef90d965fff295da8d5359ac21e54c02236dba (patch)
treee13b620b0413f71954eb53390ed2c5461d31265a
parent6a918bade9dab40aaef80559bd1169c69e8d69cb (diff)
downloadop-kernel-dev-09ef90d965fff295da8d5359ac21e54c02236dba.zip
op-kernel-dev-09ef90d965fff295da8d5359ac21e54c02236dba.tar.gz
mtd: gpmi: fix the wrong DMA command.
The last DMA command of ECC read page is used to disable the BCH module. But the original code missed to set the pio[2] which is used to set the GPMI_HW_GPMI_ECCCTRL register. fix it now. Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
-rw-r--r--drivers/mtd/nand/gpmi-nand/gpmi-lib.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-lib.c b/drivers/mtd/nand/gpmi-nand/gpmi-lib.c
index 5e3c505..c34dab1 100644
--- a/drivers/mtd/nand/gpmi-nand/gpmi-lib.c
+++ b/drivers/mtd/nand/gpmi-nand/gpmi-lib.c
@@ -1061,8 +1061,9 @@ int gpmi_read_page(struct gpmi_nand_data *this,
| BF_GPMI_CTRL0_ADDRESS(address)
| BF_GPMI_CTRL0_XFER_COUNT(geo->page_size);
pio[1] = 0;
+ pio[2] = 0; /* clear GPMI_HW_GPMI_ECCCTRL, disable the BCH. */
desc = channel->device->device_prep_slave_sg(channel,
- (struct scatterlist *)pio, 2,
+ (struct scatterlist *)pio, 3,
DMA_TRANS_NONE,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!desc) {
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