From 7928225ffcb3d01c424983af30aba3c16ab5a585 Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Wed, 25 Jul 2018 15:31:40 +0200 Subject: mtd: rawnand: atmel: clarify NAND addition/removal paths No need for an atmel_nand_register() function, let's move the code in it directly where the function was called: in atmel_nand_controller_add_nand(). To make things consistent, also rename atmel_nand_unregister() into atmel_nand_controller_remove_nand(). Signed-off-by: Miquel Raynal Reviewed-by: Boris Brezillon --- drivers/mtd/nand/raw/atmel/nand-controller.c | 102 ++++++++++++--------------- 1 file changed, 45 insertions(+), 57 deletions(-) (limited to 'drivers/mtd') diff --git a/drivers/mtd/nand/raw/atmel/nand-controller.c b/drivers/mtd/nand/raw/atmel/nand-controller.c index 4d27401f1299..143d029710f0 100644 --- a/drivers/mtd/nand/raw/atmel/nand-controller.c +++ b/drivers/mtd/nand/raw/atmel/nand-controller.c @@ -1573,7 +1573,7 @@ static int atmel_nand_detect(struct atmel_nand *nand) return ret; } -static int atmel_nand_unregister(struct atmel_nand *nand) +static int atmel_nand_controller_remove_nand(struct atmel_nand *nand) { struct nand_chip *chip = &nand->base; struct mtd_info *mtd = nand_to_mtd(chip); @@ -1589,60 +1589,6 @@ static int atmel_nand_unregister(struct atmel_nand *nand) return 0; } -static int atmel_nand_register(struct atmel_nand *nand) -{ - struct nand_chip *chip = &nand->base; - struct mtd_info *mtd = nand_to_mtd(chip); - struct atmel_nand_controller *nc; - int ret; - - nc = to_nand_controller(chip->controller); - - if (nc->caps->legacy_of_bindings || !nc->dev->of_node) { - /* - * We keep the MTD name unchanged to avoid breaking platforms - * where the MTD cmdline parser is used and the bootloader - * has not been updated to use the new naming scheme. - */ - mtd->name = "atmel_nand"; - } else if (!mtd->name) { - /* - * If the new bindings are used and the bootloader has not been - * updated to pass a new mtdparts parameter on the cmdline, you - * should define the following property in your nand node: - * - * label = "atmel_nand"; - * - * This way, mtd->name will be set by the core when - * nand_set_flash_node() is called. - */ - mtd->name = devm_kasprintf(nc->dev, GFP_KERNEL, - "%s:nand.%d", dev_name(nc->dev), - nand->cs[0].id); - if (!mtd->name) { - dev_err(nc->dev, "Failed to allocate mtd->name\n"); - return -ENOMEM; - } - } - - ret = nand_scan_tail(mtd); - if (ret) { - dev_err(nc->dev, "nand_scan_tail() failed: %d\n", ret); - return ret; - } - - ret = mtd_device_register(mtd, NULL, 0); - if (ret) { - dev_err(nc->dev, "Failed to register mtd device: %d\n", ret); - nand_cleanup(chip); - return ret; - } - - list_add_tail(&nand->node, &nc->chips); - - return 0; -} - static struct atmel_nand *atmel_nand_create(struct atmel_nand_controller *nc, struct device_node *np, int reg_cells) @@ -1772,7 +1718,49 @@ atmel_nand_controller_add_nand(struct atmel_nand_controller *nc, if (ret) return ret; - return atmel_nand_register(nand); + if (nc->caps->legacy_of_bindings || !nc->dev->of_node) { + /* + * We keep the MTD name unchanged to avoid breaking platforms + * where the MTD cmdline parser is used and the bootloader + * has not been updated to use the new naming scheme. + */ + mtd->name = "atmel_nand"; + } else if (!mtd->name) { + /* + * If the new bindings are used and the bootloader has not been + * updated to pass a new mtdparts parameter on the cmdline, you + * should define the following property in your nand node: + * + * label = "atmel_nand"; + * + * This way, mtd->name will be set by the core when + * nand_set_flash_node() is called. + */ + mtd->name = devm_kasprintf(nc->dev, GFP_KERNEL, + "%s:nand.%d", dev_name(nc->dev), + nand->cs[0].id); + if (!mtd->name) { + dev_err(nc->dev, "Failed to allocate mtd->name\n"); + return -ENOMEM; + } + } + + ret = nand_scan_tail(mtd); + if (ret) { + dev_err(nc->dev, "nand_scan_tail() failed: %d\n", ret); + return ret; + } + + ret = mtd_device_register(mtd, NULL, 0); + if (ret) { + dev_err(nc->dev, "Failed to register mtd device: %d\n", ret); + nand_cleanup(chip); + return ret; + } + + list_add_tail(&nand->node, &nc->chips); + + return 0; } static int @@ -1782,7 +1770,7 @@ atmel_nand_controller_remove_nands(struct atmel_nand_controller *nc) int ret; list_for_each_entry_safe(nand, tmp, &nc->chips, node) { - ret = atmel_nand_unregister(nand); + ret = atmel_nand_controller_remove_nand(nand); if (ret) return ret; } -- cgit v1.2.3-59-g8ed1b