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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>
This commit is contained in:
Huang Shijie 2012-03-12 10:22:18 +08:00 committed by David Woodhouse
parent 6a918bade9
commit 09ef90d965
1 changed files with 2 additions and 1 deletions
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3
drivers/mtd/nand/gpmi-nand/gpmi-lib.c
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@ -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) {