media: ipu3-cio2: Allow probe to succeed if there are no sensors connected

The device won't be powered off on systems that have no sensors connected
unless it has a driver bound to it. Allow that to happen even if there are
no sensors connected to cio2.

Reviewed-by: Rajneesh Bhardwaj <rajneesh.bhardwaj@linux.intel.com>
Tested-by: Rajneesh Bhardwaj <rajneesh.bhardwaj@linux.intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

diff --git a/drivers/media/pci/intel/ipu3/ipu3-cio2.c b/drivers/media/pci/intel/ipu3/ipu3-cio2.c
index 447baae..e281e55 100644 (file)
--- a/drivers/media/pci/intel/ipu3/ipu3-cio2.c
+++ b/drivers/media/pci/intel/ipu3/ipu3-cio2.c
@@ -1810,7 +1810,8 @@ static int cio2_pci_probe(struct pci_dev *pci_dev,
 
        /* Register notifier for subdevices we care */
        r = cio2_notifier_init(cio2);
-       if (r)
+       /* Proceed without sensors connected to allow the device to suspend. */
+       if (r && r != -ENODEV)
                goto fail_cio2_queue_exit;
 
        r = devm_request_irq(&pci_dev->dev, pci_dev->irq, cio2_irq,