diff options
| -rw-r--r-- | drivers/i2c/busses/i2c-designware.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/i2c/busses/i2c-designware.c b/drivers/i2c/busses/i2c-designware.c index f184d82..6acbe84 100644 --- a/drivers/i2c/busses/i2c-designware.c +++ b/drivers/i2c/busses/i2c-designware.c @@ -415,12 +415,17 @@ i2c_dw_xfer_msg(struct dw_i2c_dev *dev) /* more bytes to be written */ dev->status |= STATUS_WRITE_IN_PROGRESS; break; - } else { + } else dev->status &= ~STATUS_WRITE_IN_PROGRESS; - intr_mask &= ~DW_IC_INTR_TX_EMPTY; - } } + /* + * If i2c_msg index search is completed, we don't need TX_EMPTY + * interrupt any more. + */ + if (dev->msg_write_idx == dev->msgs_num) + intr_mask &= ~DW_IC_INTR_TX_EMPTY; + writel(intr_mask, dev->base + DW_IC_INTR_MASK); } |