diff options
| author | Rafał Miłecki <rafal@milecki.pl> | 2022-10-04 10:37:10 +0200 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2022-11-07 17:07:56 +0100 |
| commit | 2df11f00100d7278185a9dbefa20ba3f5d32401d (patch) | |
| tree | 200a65259a2a1854f9febd79e10191b84dcedbd0 /drivers/mtd | |
| parent | c5f5d0cd40e3bc2d6d397af788a7c0241b1c6b68 (diff) | |
mtd: core: try to find OF node for every MTD partition
So far this feature was limited to the top-level "nvmem-cells" node.
There are multiple parsers creating partitions and subpartitions
dynamically. Extend that code to handle them too.
This allows finding partition-* node for every MTD (sub)partition.
Random example:
partitions {
compatible = "brcm,bcm947xx-cfe-partitions";
partition-firmware {
compatible = "brcm,trx";
partition-loader {
};
};
};
Cc: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20221004083710.27704-2-zajec5@gmail.com
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/mtdcore.c | 17 |
1 files changed, 5 insertions, 12 deletions
diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index 6ad62ff7be23..20fcedc3021e 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -551,13 +551,11 @@ static void mtd_check_of_node(struct mtd_info *mtd) struct device_node *partitions, *parent_dn, *mtd_dn = NULL; const char *pname, *prefix = "partition-"; int plen, mtd_name_len, offset, prefix_len; - bool found = false; /* Check if MTD already has a device node */ if (mtd_get_of_node(mtd)) return; - /* Check if a partitions node exist */ if (!mtd_is_partition(mtd)) return; @@ -565,7 +563,10 @@ static void mtd_check_of_node(struct mtd_info *mtd) if (!parent_dn) return; - partitions = of_get_child_by_name(parent_dn, "partitions"); + if (mtd_is_partition(mtd->parent)) + partitions = of_node_get(parent_dn); + else + partitions = of_get_child_by_name(parent_dn, "partitions"); if (!partitions) goto exit_parent; @@ -589,19 +590,11 @@ static void mtd_check_of_node(struct mtd_info *mtd) plen = strlen(pname) - offset; if (plen == mtd_name_len && !strncmp(mtd->name, pname + offset, plen)) { - found = true; + mtd_set_of_node(mtd, mtd_dn); break; } } - if (!found) - goto exit_partitions; - - /* Set of_node only for nvmem */ - if (of_device_is_compatible(mtd_dn, "nvmem-cells")) - mtd_set_of_node(mtd, mtd_dn); - -exit_partitions: of_node_put(partitions); exit_parent: of_node_put(parent_dn); |