diff options
Diffstat (limited to 'drivers/i2c/busses/i2c-tegra.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-tegra.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c index 25ad6dca3884..96916bed997f 100644 --- a/drivers/i2c/busses/i2c-tegra.c +++ b/drivers/i2c/busses/i2c-tegra.c @@ -583,9 +583,12 @@ static irqreturn_t tegra_i2c_isr(int irq, void *dev_id) } i2c_writel(i2c_dev, status, I2C_INT_STATUS); + i2c_readl(i2c_dev, I2C_INT_STATUS); - if (i2c_dev->is_dvc) + if (i2c_dev->is_dvc) { dvc_writel(i2c_dev, DVC_STATUS_I2C_DONE_INTR, DVC_STATUS); + dvc_readl(i2c_dev, DVC_STATUS); + } if (status & I2C_INT_PACKET_XFER_COMPLETE) { BUG_ON(i2c_dev->msg_buf_remaining); @@ -621,13 +624,16 @@ err: I2C_INT_RX_FIFO_DATA_REQ | I2C_INT_TX_FIFO_OVERFLOW); i2c_writel(i2c_dev, status, I2C_INT_STATUS); + i2c_readl(i2c_dev, I2C_INT_STATUS); /* An error occured, mask dvc interrupt */ if (i2c_dev->is_dvc) dvc_i2c_mask_irq(i2c_dev, DVC_CTRL_REG3_I2C_DONE_INTR_EN); - if (i2c_dev->is_dvc) + if (i2c_dev->is_dvc) { dvc_writel(i2c_dev, DVC_STATUS_I2C_DONE_INTR, DVC_STATUS); + dvc_readl(i2c_dev, DVC_STATUS); + } complete(&i2c_dev->msg_complete); return IRQ_HANDLED; |