| Message ID | 20240213130815.382792-4-sakari.ailus@linux.intel.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | IPU bridge improvements for IPU6 | expand |
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;
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@linux.intel.com> --- drivers/media/pci/intel/ipu-bridge.c | 4 ++++ 1 file changed, 4 insertions(+)