openwrt/target/linux/bcm47xx/patches-5.15/103-v5.18-mtd-rawnand-brcmnand-Move-OF-operations-out-of-brcmnand_init_cs.patch

From: Florian Fainelli <f.fainelli@gmail.com>
Subject: [PATCH v3 4/9] mtd: rawnand: brcmnand: Move OF operations out of brcmnand_init_cs()
Date: Fri, 07 Jan 2022 10:46:09 -0800
Content-Type: text/plain; charset="utf-8"

In order to initialize a given chip select object for use by the
brcmnand driver, move all of the Device Tree specific routines outside
of brcmnand_init_cs() in order to make it usable in a platform data
configuration which will be necessary for supporting BCMA chips.

No functional changes introduced.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 drivers/mtd/nand/raw/brcmnand/brcmnand.c | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

--- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
+++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
@@ -2811,7 +2811,7 @@ static const struct nand_controller_ops
 	.attach_chip = brcmnand_attach_chip,
 };
 
-static int brcmnand_init_cs(struct brcmnand_host *host, struct device_node *dn)
+static int brcmnand_init_cs(struct brcmnand_host *host)
 {
 	struct brcmnand_controller *ctrl = host->ctrl;
 	struct device *dev = ctrl->dev;
@@ -2820,16 +2820,9 @@ static int brcmnand_init_cs(struct brcmn
 	int ret;
 	u16 cfg_offs;
 
-	ret = of_property_read_u32(dn, "reg", &host->cs);
-	if (ret) {
-		dev_err(dev, "can't get chip-select\n");
-		return -ENXIO;
-	}
-
 	mtd = nand_to_mtd(&host->chip);
 	chip = &host->chip;
 
-	nand_set_flash_node(chip, dn);
 	nand_set_controller_data(chip, host);
 	mtd->name = devm_kasprintf(dev, GFP_KERNEL, "brcmnand.%d",
 				   host->cs);
@@ -3240,7 +3233,16 @@ int brcmnand_probe(struct platform_devic
 			host->pdev = pdev;
 			host->ctrl = ctrl;
 
-			ret = brcmnand_init_cs(host, child);
+			ret = of_property_read_u32(child, "reg", &host->cs);
+			if (ret) {
+				dev_err(dev, "can't get chip-select\n");
+				devm_kfree(dev, host);
+				continue;
+			}
+
+			nand_set_flash_node(&host->chip, child);
+
+			ret = brcmnand_init_cs(host);
 			if (ret) {
 				devm_kfree(dev, host);
 				continue; /* Try all chip-selects */