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-rw-r--r--drivers/i2c/busses/i2c-omap.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index 17476ecd9782..5ca0e0010a0e 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -181,22 +181,26 @@ static void omap_i2c_unidle(struct omap_i2c_dev *dev)
if (dev->iclk != NULL)
clk_enable(dev->iclk);
clk_enable(dev->fclk);
+ dev->idle = 0;
if (dev->iestate)
omap_i2c_write_reg(dev, OMAP_I2C_IE_REG, dev->iestate);
- dev->idle = 0;
}
static void omap_i2c_idle(struct omap_i2c_dev *dev)
{
u16 iv;
- dev->idle = 1;
dev->iestate = omap_i2c_read_reg(dev, OMAP_I2C_IE_REG);
omap_i2c_write_reg(dev, OMAP_I2C_IE_REG, 0);
- if (dev->rev1)
+ if (dev->rev1) {
iv = omap_i2c_read_reg(dev, OMAP_I2C_IV_REG); /* Read clears */
- else
+ } else {
omap_i2c_write_reg(dev, OMAP_I2C_STAT_REG, dev->iestate);
+
+ /* Flush posted write before the dev->idle store occurs */
+ omap_i2c_read_reg(dev, OMAP_I2C_STAT_REG);
+ }
+ dev->idle = 1;
clk_disable(dev->fclk);
if (dev->iclk != NULL)
clk_disable(dev->iclk);