i2c: imx: Check the return value from clk_prepare_enable()
authorFabio Estevam <fabio.estevam@freescale.com>
Wed, 4 Dec 2013 22:21:37 +0000 (20:21 -0200)
committerWolfram Sang <wsa@the-dreams.de>
Thu, 12 Dec 2013 21:48:22 +0000 (22:48 +0100)
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>
drivers/i2c/busses/i2c-imx.c

index 1d7efa3..d0cfbb4 100644 (file)
@@ -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);