diff options
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-imx.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c index 613069b..ceff87c 100644 --- a/drivers/i2c/busses/i2c-imx.c +++ b/drivers/i2c/busses/i2c-imx.c @@ -268,6 +268,14 @@ static int i2c_imx_bus_busy(struct imx_i2c_struct *i2c_imx, int for_busy) while (1) { temp = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2SR); + + /* check for arbitration lost */ + if (temp & I2SR_IAL) { + temp &= ~I2SR_IAL; + imx_i2c_write_reg(temp, i2c_imx, IMX_I2C_I2SR); + return -EAGAIN; + } + if (for_busy && (temp & I2SR_IBB)) break; if (!for_busy && !(temp & I2SR_IBB)) |
