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Subject: media: ipu3-cio2: Fix PM runtime usage_count in driver unbind
Author: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Date: Wed Dec 21 09:30:11 2022 +0100
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>
drivers/media/pci/intel/ipu3/ipu3-cio2-main.c | 3 +++
1 file changed, 3 insertions(+)
---
diff --git a/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c b/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
index 390bd5ea3472..3b76a9d0383a 100644
--- 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_dev *pci_dev)
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)
