diff options
Diffstat (limited to 'drivers/i2c/busses/i2c-rcar.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-rcar.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c index b0d85f5957d4..d39a4606f72d 100644 --- a/drivers/i2c/busses/i2c-rcar.c +++ b/drivers/i2c/busses/i2c-rcar.c @@ -480,6 +480,10 @@ static void rcar_i2c_irq_send(struct rcar_i2c_priv *priv, u32 msr) if (!(msr & MDE)) return; + /* Check if DMA can be enabled and take over */ + if (priv->pos == 1 && rcar_i2c_dma(priv)) + return; + if (priv->pos < msg->len) { /* * Prepare next data to ICRXTX register. @@ -490,13 +494,6 @@ static void rcar_i2c_irq_send(struct rcar_i2c_priv *priv, u32 msr) */ rcar_i2c_write(priv, ICRXTX, msg->buf[priv->pos]); priv->pos++; - - /* - * Try to use DMA to transmit the rest of the data if - * address transfer phase just finished. - */ - if (msr & MAT) - rcar_i2c_dma(priv); } else { /* * The last data was pushed to ICRXTX on _PREV_ empty irq. |