[PATCH V2 1/1] uio: clean uioinfo when uninstall uio driver

[Aisheng Dong <b29396@freescale.com>]

From: Jie Zhou <b30303@freescale.com>

The uioinfo should be cleaned up when uninstall, otherwise re-install
failure of uio_pdrv_genirq.ko will happen.

Signed-off-by: Jie Zhou <b30303@freescale.com>
Signed-off-by: Aisheng Dong <b29396@freescale.com>

---
Changes for v2:
 Address the comments from Hans:
   - The uioinfo->irq_flags and uioinfo->priv do not have to be cleaned
---
 drivers/uio/uio_pdrv_genirq.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/uio/uio_pdrv_genirq.c b/drivers/uio/uio_pdrv_genirq.c
index 7174d51..0f424af 100644
--- a/drivers/uio/uio_pdrv_genirq.c
+++ b/drivers/uio/uio_pdrv_genirq.c
@@ -189,6 +189,10 @@ static int uio_pdrv_genirq_remove(struct platform_device *pdev)
 
 	uio_unregister_device(priv->uioinfo);
 	pm_runtime_disable(&pdev->dev);
+
+	priv->uioinfo->handler = NULL;
+	priv->uioinfo->irqcontrol = NULL;
+
 	kfree(priv);
 	return 0;
 }
-- 
1.7.0.4