drivers: uio_dmem_genirq: Fix memory leak in uio_dmem_genirq_probe()

When platform_get_irq() is failed after "priv" allocated,
it need to free "priv". But the label of bad0 doesn't try
to free about "priv". So this patch changes that lable to "bad1".
But "bad1" has pm_runtime_disable() call, this function should
be called when uio_register_device() is failed. So it is moved
into handling error for uio_register_device().

Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Hans J. Koch <hjk@hansjkoch.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/uio/uio_dmem_genirq.c b/drivers/uio/uio_dmem_genirq.c
index 1270f3b2613949626463492e8046f0d1db1b9f20..8d0bba469566e403f7775ba5e1d090cbff1e8ec3 100644 (file)
--- a/drivers/uio/uio_dmem_genirq.c
+++ b/drivers/uio/uio_dmem_genirq.c
@@ -204,7 +204,7 @@ static int uio_dmem_genirq_probe(struct platform_device *pdev)
                ret = platform_get_irq(pdev, 0);
                if (ret < 0) {
                        dev_err(&pdev->dev, "failed to get IRQ\n");
-                       goto bad0;
+                       goto bad1;
                }
                uioinfo->irq = ret;
        }
@@ -275,6 +275,7 @@ static int uio_dmem_genirq_probe(struct platform_device *pdev)
        ret = uio_register_device(&pdev->dev, priv->uioinfo);
        if (ret) {
                dev_err(&pdev->dev, "unable to register uio device\n");
+               pm_runtime_disable(&pdev->dev);
                goto bad1;
        }
 
@@ -282,7 +283,6 @@ static int uio_dmem_genirq_probe(struct platform_device *pdev)
        return 0;
  bad1:
        kfree(priv);
-       pm_runtime_disable(&pdev->dev);
  bad0:
        /* kfree uioinfo for OF */
        if (pdev->dev.of_node)