[PATCH] mtd/gpmi : fix the wrong DMA command.
From: Huang Shijie <hidden>
Date: 2012-03-12 02:22:18
Subsystem:
memory technology devices (mtd), nand flash subsystem, the rest · Maintainers:
Miquel Raynal, Richard Weinberger, Vignesh Raghavendra, Linus Torvalds
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 <redacted> --- drivers/mtd/nand/gpmi-nand/gpmi-lib.c | 3 ++- 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) {
--
1.7.3.2