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.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/media/pci/intel/ipu3/ipu3-cio2.c
+++ b/drivers/media/pci/intel/ipu3/ipu3-cio2.c
@@ -1871,6 +1871,9 @@ 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)
