[PATCH v10 18/26] mtd: rawnand: sunxi: skip unavailable NAND child nodes

[James Hilliard]

sunxi_nand_chips_init() scans every child of the controller node,
including those marked disabled or reserved. Neither the chip setup nor
the NAND scan path checks availability, so these children are still
probed and registered. If an unavailable child describes an absent chip,
its scan failure can also prevent the other chips from being used.

Iterate over available children so unavailable nodes are skipped before
claiming their chip selects or issuing NAND commands. Keep the scoped
iterator so node references are released on both normal and error exits.

Fixes: 1fef62c1423b ("mtd: nand: add sunxi NAND flash controller support")
Signed-off-by: James Hilliard <james.hilliard1 at gmail.com>
---
 drivers/mtd/nand/raw/sunxi_nand.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mtd/nand/raw/sunxi_nand.c b/drivers/mtd/nand/raw/sunxi_nand.c
index 636a04f49418..3de9ed6795fe 100644
--- a/drivers/mtd/nand/raw/sunxi_nand.c
+++ b/drivers/mtd/nand/raw/sunxi_nand.c
@@ -2771,7 +2771,7 @@ static int sunxi_nand_chips_init(struct device *dev, struct sunxi_nfc *nfc)
 	struct device_node *np = dev->of_node;
 	int ret;
 
-	for_each_child_of_node_scoped(np, nand_np) {
+	for_each_available_child_of_node_scoped(np, nand_np) {
 		ret = sunxi_nand_chip_init(dev, nfc, nand_np);
 		if (ret) {
 			sunxi_nand_chips_cleanup(nfc);

-- 
2.53.0