[PATCH 6.1 828/885] media: ipu3-cio2: Fix PM runtime usage_count in driver unbind

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From: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>

commit 909d3096ac99fa2289f9b8945a3eab2269947a0a upstream.

Get the PM runtime usage_count and forbid PM runtime at driver unbind. The
opposite is being done in probe() already.

Fixes: commit c2a6a07afe4a ("media: intel-ipu3: cio2: add new MIPI-CSI2 driver")
Cc: stable@xxxxxxxxxxxxxxx # for >= 4.16
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Reviewed-by: Bingbu Cao <bingbu.cao@xxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/media/pci/intel/ipu3/ipu3-cio2-main.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
+++ b/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
@@ -1843,6 +1843,9 @@ static void cio2_pci_remove(struct pci_d
 	v4l2_device_unregister(&cio2->v4l2_dev);
 	media_device_cleanup(&cio2->media_dev);
 	mutex_destroy(&cio2->lock);
+
+	pm_runtime_forbid(&pci_dev->dev);
+	pm_runtime_get_noresume(&pci_dev->dev);
 }
 
 static int __maybe_unused cio2_runtime_suspend(struct device *dev)





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