i2c: imx: Check the return value from clk_prepare_enable()

clk_prepare_enable() may fail, so let's check its return value and propagate it
in the case of error.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
index 1d7efa3..d0cfbb4 100644 (file)
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -312,7 +312,9 @@ static int i2c_imx_start(struct imx_i2c_struct *i2c_imx)
 
        dev_dbg(&i2c_imx->adapter.dev, "<%s>\n", __func__);
 
-       clk_prepare_enable(i2c_imx->clk);
+       result = clk_prepare_enable(i2c_imx->clk);
+       if (result)
+               return result;
        imx_i2c_write_reg(i2c_imx->ifdr, i2c_imx, IMX_I2C_IFDR);
        /* Enable I2C controller */
        imx_i2c_write_reg(i2c_imx->hwdata->i2sr_clr_opcode, i2c_imx, IMX_I2C_I2SR);