mtd: hyperbus: hbmc-am654: Fix direct mapping setup flash access

[ Upstream commit aca31ce96814c84d1a41aaa109c15abe61005af7 ]

Setting up of direct mapping should be done with flash node's IO
address space and not with controller's IO region.

Fixes: b6fe8bc67d2d3 ("mtd: hyperbus: move direct mapping setup to AM654 HBMC driver")
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Link: https://lore.kernel.org/r/20200924081214.16934-3-vigneshr@ti.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/mtd/hyperbus/hbmc-am654.c b/drivers/mtd/hyperbus/hbmc-am654.c
index f350a0809f8801814616047c5f6ba85119802a9a..a808fa28cd9a1de987774fd77ee224a2d8e4e47a 100644 (file)
--- a/drivers/mtd/hyperbus/hbmc-am654.c
+++ b/drivers/mtd/hyperbus/hbmc-am654.c
@@ -70,7 +70,8 @@ static int am654_hbmc_probe(struct platform_device *pdev)
 
        platform_set_drvdata(pdev, priv);
 
-       ret = of_address_to_resource(np, 0, &res);
+       priv->hbdev.np = of_get_next_child(np, NULL);
+       ret = of_address_to_resource(priv->hbdev.np, 0, &res);
        if (ret)
                return ret;
 
@@ -103,7 +104,6 @@ static int am654_hbmc_probe(struct platform_device *pdev)
        priv->ctlr.dev = dev;
        priv->ctlr.ops = &am654_hbmc_ops;
        priv->hbdev.ctlr = &priv->ctlr;
-       priv->hbdev.np = of_get_next_child(dev->of_node, NULL);
        ret = hyperbus_register_device(&priv->hbdev);
        if (ret) {
                dev_err(dev, "failed to register controller\n");