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Subject: media: ipu3-cio2: Fix PM runtime usage_count in driver unbind Author: Sakari Ailus sakari.ailus@linux.intel.com 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@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

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)