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authorMiquel Raynal <miquel.raynal@bootlin.com>2018-07-25 15:31:40 +0200
committerMiquel Raynal <miquel.raynal@bootlin.com>2018-07-31 09:46:08 +0200
commit7928225ffcb3d01c424983af30aba3c16ab5a585 (patch)
tree90a4b0f204944a793e913897d434c64883935d3c /drivers/mtd/nand/raw/atmel/nand-controller.c
parente1e6255c311bae4f89bf627fe54ced88bb5caa7e (diff)
downloadlinux-7928225ffcb3d01c424983af30aba3c16ab5a585.tar.bz2
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 <miquel.raynal@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
Diffstat (limited to 'drivers/mtd/nand/raw/atmel/nand-controller.c')
-rw-r--r--drivers/mtd/nand/raw/atmel/nand-controller.c102
1 files changed, 45 insertions, 57 deletions
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;
}