[PATCH v4 14/17] memory: mtk-smi: Use device_is_bound to check if smi-common is ready

[Yong Wu]

smi-larb driver should run after smi-common, Use device_is_bound to confirm
whether smicommon driver is ready.

CC: Matthias Brugger <matthias.bgg at gmail.com>
Signed-off-by: Yong Wu <yong.wu at mediatek.com>
---
 drivers/memory/mtk-smi.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/memory/mtk-smi.c b/drivers/memory/mtk-smi.c
index 19c3949..0f8cd50 100644
--- a/drivers/memory/mtk-smi.c
+++ b/drivers/memory/mtk-smi.c
@@ -296,8 +296,14 @@ static int mtk_smi_larb_probe(struct platform_device *pdev)
 	smi_pdev = of_find_device_by_node(smi_node);
 	of_node_put(smi_node);
 	if (smi_pdev) {
-		if (!platform_get_drvdata(smi_pdev))
+		bool smicommon_is_bound;
+
+		device_lock(&smi_pdev->dev);
+		smicommon_is_bound = device_is_bound(&smi_pdev->dev);
+		device_unlock(&smi_pdev->dev);
+		if (!smicommon_is_bound)
 			return -EPROBE_DEFER;
+
 		larb->smi_common_dev = &smi_pdev->dev;
 		link = device_link_add(dev, larb->smi_common_dev,
 				       DL_FLAG_PM_RUNTIME | DL_FLAG_STATELESS);
-- 
1.9.1