diff options
Diffstat (limited to 'drivers/mtd/nand/fsl_elbc_nand.c')
| -rw-r--r-- | drivers/mtd/nand/fsl_elbc_nand.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c index 919c192b8f27..4b69aacdf5ca 100644 --- a/drivers/mtd/nand/fsl_elbc_nand.c +++ b/drivers/mtd/nand/fsl_elbc_nand.c @@ -481,7 +481,7 @@ static void fsl_elbc_write_buf(struct mtd_info *mtd, const u8 *buf, int len) struct fsl_elbc_ctrl *ctrl = priv->ctrl; unsigned int bufsize = mtd->writesize + mtd->oobsize; - if (len < 0) { + if (len <= 0) { dev_err(ctrl->dev, "write_buf of %d bytes", len); ctrl->status = 0; return; @@ -496,6 +496,15 @@ static void fsl_elbc_write_buf(struct mtd_info *mtd, const u8 *buf, int len) } memcpy_toio(&ctrl->addr[ctrl->index], buf, len); + /* + * This is workaround for the weird elbc hangs during nand write, + * Scott Wood says: "...perhaps difference in how long it takes a + * write to make it through the localbus compared to a write to IMMR + * is causing problems, and sync isn't helping for some reason." + * Reading back the last byte helps though. + */ + in_8(&ctrl->addr[ctrl->index] + len - 1); + ctrl->index += len; } |