The async notifier was registered before the v4l2_device was registered and
before the notifier callbacks were set. This could lead to missing the
bound() and complete() callbacks and to attempting to spin_lock() and
uninitialised spin lock.
Also fix unregistering the async notifier in the case of an error --- the
function may not fail anymore after the notifier is registered.
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxx>
---
drivers/media/platform/omap3isp/isp.c | 19 ++++++++++++-------
1 file changed, 12 insertions(+), 7 deletions(-)
diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c
index 18d0a87..0fa95cc 100644
--- a/drivers/media/platform/omap3isp/isp.c
+++ b/drivers/media/platform/omap3isp/isp.c
@@ -2423,10 +2423,6 @@ static int isp_probe(struct platform_device *pdev)
ret = isp_of_parse_nodes(&pdev->dev, &isp->notifier);
if (ret < 0)
return ret;
- ret = v4l2_async_notifier_register(&isp->v4l2_dev,
- &isp->notifier);
- if (ret)
- return ret;
} else {
isp->pdata = pdev->dev.platform_data;
isp->syscon = syscon_regmap_lookup_by_pdevname("syscon.0");
@@ -2557,18 +2553,27 @@ static int isp_probe(struct platform_device *pdev)
if (ret < 0)
goto error_iommu;
- isp->notifier.bound = isp_subdev_notifier_bound;
- isp->notifier.complete = isp_subdev_notifier_complete;
-
ret = isp_register_entities(isp);
if (ret < 0)
goto error_modules;
+ if (IS_ENABLED(CONFIG_OF) && pdev->dev.of_node) {
+ isp->notifier.bound = isp_subdev_notifier_bound;
+ isp->notifier.complete = isp_subdev_notifier_complete;
+
+ ret = v4l2_async_notifier_register(&isp->v4l2_dev,
+ &isp->notifier);
+ if (ret)
+ goto error_register_entities;
+ }
+
isp_core_init(isp, 1);
omap3isp_put(isp);
return 0;
+error_register_entities:
+ isp_unregister_entities(isp);
error_modules:
isp_cleanup_modules(isp);
error_iommu:
--
1.7.10.4
--
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