media: ipu3-cio2: Fix PM runtime usage_count in driver unbind

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@vger.kernel.org # for >= 4.16
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Bingbu Cao <bingbu.cao@intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c b/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
index 47db0ee0fcbfa2d9996e6190156b58e4d8b1f496..3a8af3936e93a0ce220fe0cb60e6c1dcfe921c53 100644 (file)
--- a/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
+++ b/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
@@ -1851,6 +1851,9 @@ 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)