iio: adc: mxs-lradc: Disable the clock on probe failure

We should disable lradc->clk in the case of errors in the probe function.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: <Stable@vger.kernel.org>

diff --git a/drivers/staging/iio/adc/mxs-lradc.c b/drivers/staging/iio/adc/mxs-lradc.c
index 468327f..d343611 100644 (file)
--- a/drivers/staging/iio/adc/mxs-lradc.c
+++ b/drivers/staging/iio/adc/mxs-lradc.c
@@ -1565,14 +1565,16 @@ static int mxs_lradc_probe(struct platform_device *pdev)
        /* Grab all IRQ sources */
        for (i = 0; i < of_cfg->irq_count; i++) {
                lradc->irq[i] = platform_get_irq(pdev, i);
-               if (lradc->irq[i] < 0)
-                       return lradc->irq[i];
+               if (lradc->irq[i] < 0) {
+                       ret = lradc->irq[i];
+                       goto err_clk;
+               }
 
                ret = devm_request_irq(dev, lradc->irq[i],
                                        mxs_lradc_handle_irq, 0,
                                        of_cfg->irq_name[i], iio);
                if (ret)
-                       return ret;
+                       goto err_clk;
        }
 
        lradc->vref_mv = of_cfg->vref_mv;
@@ -1594,7 +1596,7 @@ static int mxs_lradc_probe(struct platform_device *pdev)
                                &mxs_lradc_trigger_handler,
                                &mxs_lradc_buffer_ops);
        if (ret)
-               return ret;
+               goto err_clk;
 
        ret = mxs_lradc_trigger_init(iio);
        if (ret)
@@ -1649,6 +1651,8 @@ err_dev:
        mxs_lradc_trigger_remove(iio);
 err_trig:
        iio_triggered_buffer_cleanup(iio);
+err_clk:
+       clk_disable_unprepare(lradc->clk);
        return ret;
 }