The IPU bridge initialisation will be called from multiple locations in
the future. Serialise the access to devices' fwnodes in this context.
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
---
drivers/media/pci/intel/ipu-bridge.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/media/pci/intel/ipu-bridge.c b/drivers/media/pci/intel/ipu-bridge.c
index 735c62c37c22..e994db4f4d91 100644
--- a/drivers/media/pci/intel/ipu-bridge.c
+++ b/drivers/media/pci/intel/ipu-bridge.c
@@ -766,6 +766,8 @@ static int ipu_bridge_check_fwnode_graph(struct fwnode_handle *fwnode)
return ipu_bridge_check_fwnode_graph(fwnode->secondary);
}
+static DEFINE_MUTEX(ipu_bridge_mutex);
+
int ipu_bridge_init(struct device *dev,
ipu_parse_sensor_fwnode_t parse_sensor_fwnode)
{
@@ -774,6 +776,8 @@ int ipu_bridge_init(struct device *dev,
unsigned int i;
int ret;
+ guard(mutex)(&ipu_bridge_mutex);
+
if (!ipu_bridge_check_fwnode_graph(dev_fwnode(dev)))
return 0;
--
2.39.2
