i2c: tegra: Remove unnecessary write to INT_STATUS
Alok Chauhan [Fri, 3 Feb 2012 14:10:17 +0000 (14:10 +0000)]
The write is not necessary and may cause the I2C controller to misbehave.
With this fix, I2C on Tegra30 works (at least, running i2cdump repeatedly
on the WM8903 on Cardhu's I2C5/DVC bus).

Signed-off-by: Alok Chauhan <alokc@nvidia.com>
[swarren: Reworded commit description]
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>

drivers/i2c/busses/i2c-tegra.c

index 0ab4a95..e978635 100644 (file)
@@ -457,7 +457,6 @@ static int tegra_i2c_xfer_msg(struct tegra_i2c_dev *i2c_dev,
        int ret;
 
        tegra_i2c_flush_fifos(i2c_dev);
-       i2c_writel(i2c_dev, 0xFF, I2C_INT_STATUS);
 
        if (msg->len == 0)
                return -EINVAL;