[PATCH v4 08/12] fpga: dfl: make uinit callback optional

[Wu Hao <hao.wu@xxxxxxxxx>]

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

Signed-off-by: Wu Hao <hao.wu@xxxxxxxxx>
---
 drivers/fpga/dfl.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/fpga/dfl.c b/drivers/fpga/dfl.c
index 87eaef6..c0512af 100644
--- a/drivers/fpga/dfl.c
+++ b/drivers/fpga/dfl.c
@@ -259,7 +259,8 @@ void dfl_fpga_dev_feature_uinit(struct platform_device *pdev)
 
 	dfl_fpga_dev_for_each_feature(pdata, feature)
 		if (feature->ops) {
-			feature->ops->uinit(pdev, feature);
+			if (feature->ops->uinit)
+				feature->ops->uinit(pdev, feature);
 			feature->ops = NULL;
 		}
 }
-- 
1.8.3.1