From bf6c2de11c43955ffb4394e6dfc86363298c0a05 Mon Sep 17 00:00:00 2001 From: Alok Chauhan Date: Fri, 3 Feb 2012 14:10:17 +0000 Subject: [PATCH] i2c: tegra: Remove unnecessary write to INT_STATUS 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 [swarren: Reworded commit description] Signed-off-by: Stephen Warren Signed-off-by: Wolfram Sang --- drivers/i2c/busses/i2c-tegra.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c index 0ab4a954874..e978635e60f 100644 --- a/drivers/i2c/busses/i2c-tegra.c +++ b/drivers/i2c/busses/i2c-tegra.c @@ -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;