3.13.11.11 -stable review patch.  If anyone has any objections, please let me 
know.

------------------

From: Fabio Estevam <[email protected]>

commit 75d7ed3b9e7cb79a3b0e1f417fb674d54b4fc668 upstream.

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

Signed-off-by: Fabio Estevam <[email protected]>
Reviewed-by: Marek Vasut <[email protected]>
Signed-off-by: Jonathan Cameron <[email protected]>
Signed-off-by: Kamal Mostafa <[email protected]>
---
 drivers/staging/iio/adc/mxs-lradc.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/iio/adc/mxs-lradc.c 
b/drivers/staging/iio/adc/mxs-lradc.c
index cef5dde..da4f0b1 100644
--- a/drivers/staging/iio/adc/mxs-lradc.c
+++ b/drivers/staging/iio/adc/mxs-lradc.c
@@ -1307,14 +1307,16 @@ 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;
        }
 
        platform_set_drvdata(pdev, iio);
@@ -1334,7 +1336,7 @@ 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)
@@ -1369,6 +1371,8 @@ err_dev:
        mxs_lradc_trigger_remove(iio);
 err_trig:
        iio_triggered_buffer_cleanup(iio);
+err_clk:
+       clk_disable_unprepare(lradc->clk);
        return ret;
 }
 
-- 
1.9.1

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