diff --git a/drivers/media/pci/intel/ipu6/ipu6-isys.c b/drivers/media/pci/intel/ipu6/ipu6-isys.c
index ef01dcb635fa..5a8becff65ae 100644
--- a/drivers/media/pci/intel/ipu6/ipu6-isys.c
+++ b/drivers/media/pci/intel/ipu6/ipu6-isys.c
@@ -269,7 +269,7 @@ static int isys_register_video_devices(struct ipu6_isys *isys)
 	return ret;
 }
 
-void isys_setup_hw(struct ipu6_isys *isys)
+static void isys_setup_hw(struct ipu6_isys *isys)
 {
 	void __iomem *base = isys->pdata->base;
 	const u8 *thd = isys->pdata->ipdata->hw_variant.cdc_fifo_threshold;
@@ -341,7 +341,7 @@ static void ipu6_isys_csi2_isr(struct ipu6_isys_csi2 *csi2)
 	}
 }
 
-irqreturn_t isys_isr(struct ipu6_bus_device *adev)
+static irqreturn_t isys_isr(struct ipu6_bus_device *adev)
 {
 	struct ipu6_isys *isys = ipu6_bus_get_drvdata(adev);
 	void __iomem *base = isys->pdata->base;
diff --git a/drivers/media/pci/intel/ipu6/ipu6-isys.h b/drivers/media/pci/intel/ipu6/ipu6-isys.h
index 0e2c8b71edfc..7fb8cb820912 100644
--- a/drivers/media/pci/intel/ipu6/ipu6-isys.h
+++ b/drivers/media/pci/intel/ipu6/ipu6-isys.h
@@ -181,8 +181,6 @@ void ipu6_cleanup_fw_msg_bufs(struct ipu6_isys *isys);
 
 extern const struct v4l2_ioctl_ops ipu6_isys_ioctl_ops;
 
-void isys_setup_hw(struct ipu6_isys *isys);
-irqreturn_t isys_isr(struct ipu6_bus_device *adev);
 void update_watermark_setting(struct ipu6_isys *isys);
 
 int ipu6_isys_mcd_phy_set_power(struct ipu6_isys *isys,