[PATCH v5 1/9] fpga: dfl: make init callback optional

[Wu Hao]

This patch makes init callback of sub features optional. With
this change, people don't need to prepare any empty init callback.

Signed-off-by: Wu Hao <hao...@intel.com>
---
 drivers/fpga/dfl.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/fpga/dfl.c b/drivers/fpga/dfl.c
index c0512af..96a2b82 100644
--- a/drivers/fpga/dfl.c
+++ b/drivers/fpga/dfl.c
@@ -271,11 +271,13 @@ static int dfl_feature_instance_init(struct 
platform_device *pdev,
                                     struct dfl_feature *feature,
                                     struct dfl_feature_driver *drv)
 {
-       int ret;
+       int ret = 0;
 
-       ret = drv->ops->init(pdev, feature);
-       if (ret)
-               return ret;
+       if (drv->ops->init) {
+               ret = drv->ops->init(pdev, feature);
+               if (ret)
+                       return ret;
+       }
 
        feature->ops = drv->ops;
 
-- 
1.8.3.1