--- /dev/null
+From 63db0cb35e1cb3b3c134906d1062f65513fdda2d Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Tue, 4 Oct 2022 10:37:09 +0200
+Subject: [PATCH] mtd: core: simplify (a bit) code find partition-matching
+ dynamic OF node
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+1. Don't hardcode "partition-" string twice
+2. Use simpler logic & use ->name to avoid of_property_read_string()
+3. Use mtd_get_of_node() helper
+
+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/20221004083710.27704-1-zajec5@gmail.com
+---
+ drivers/mtd/mtdcore.c | 16 +++++++---------
+ 1 file changed, 7 insertions(+), 9 deletions(-)
+
+--- a/drivers/mtd/mtdcore.c
++++ b/drivers/mtd/mtdcore.c
+@@ -594,18 +594,16 @@ static void mtd_check_of_node(struct mtd
+ struct device_node *partitions, *parent_dn, *mtd_dn = NULL;
+ const char *pname, *prefix = "partition-";
+ int plen, mtd_name_len, offset, prefix_len;
+- struct mtd_info *parent;
+ bool found = false;
+
+ /* Check if MTD already has a device node */
+- if (dev_of_node(&mtd->dev))
++ if (mtd_get_of_node(mtd))
+ return;
+
+ /* Check if a partitions node exist */
+ if (!mtd_is_partition(mtd))
+ return;
+- parent = mtd_get_master(mtd);
+- parent_dn = of_node_get(dev_of_node(&parent->dev));
++ parent_dn = of_node_get(mtd_get_of_node(mtd_get_master(mtd)));
+ if (!parent_dn)
+ return;
+
+@@ -618,15 +616,15 @@ static void mtd_check_of_node(struct mtd
+
+ /* Search if a partition is defined with the same name */
+ for_each_child_of_node(partitions, mtd_dn) {
+- offset = 0;
+-
+ /* Skip partition with no/wrong prefix */
+- if (!of_node_name_prefix(mtd_dn, "partition-"))
++ if (!of_node_name_prefix(mtd_dn, prefix))
+ continue;
+
+ /* Label have priority. Check that first */
+- if (of_property_read_string(mtd_dn, "label", &pname)) {
+- of_property_read_string(mtd_dn, "name", &pname);
++ if (!of_property_read_string(mtd_dn, "label", &pname)) {
++ offset = 0;
++ } else {
++ pname = mtd_dn->name;
+ offset = prefix_len;
+ }
+
--- /dev/null
+From ddb8cefb7af288950447ca6eeeafb09977dab56f Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Tue, 4 Oct 2022 10:37:10 +0200
+Subject: [PATCH] mtd: core: try to find OF node for every MTD partition
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+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
+---
+ drivers/mtd/mtdcore.c | 18 ++++++------------
+ 1 file changed, 6 insertions(+), 12 deletions(-)
+
+--- a/drivers/mtd/mtdcore.c
++++ b/drivers/mtd/mtdcore.c
+@@ -594,20 +594,22 @@ static void mtd_check_of_node(struct 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;
++
+ parent_dn = of_node_get(mtd_get_of_node(mtd_get_master(mtd)));
+ if (!parent_dn)
+ return;
+
+- partitions = of_get_child_by_name(parent_dn, "partitions");
++ if (mtd_is_partition(mtd_get_master(mtd)))
++ partitions = of_node_get(parent_dn);
++ else
++ partitions = of_get_child_by_name(parent_dn, "partitions");
+ if (!partitions)
+ goto exit_parent;
+
+@@ -631,19 +633,11 @@ static void mtd_check_of_node(struct 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);
#include <linux/nvmem-provider.h>
#include <linux/mtd/mtd.h>
-@@ -762,6 +763,15 @@ int add_mtd_device(struct mtd_info *mtd)
+@@ -754,6 +755,15 @@ int add_mtd_device(struct mtd_info *mtd)
of this try_ nonsense, and no bitching about it
either. :) */
__module_get(THIS_MODULE);
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
-@@ -1144,6 +1144,44 @@ out_unlock:
+@@ -1136,6 +1136,44 @@ out_unlock:
}
EXPORT_SYMBOL_GPL(get_mtd_device_nm);
mtd->type = MTD_NORFLASH;
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
-@@ -842,6 +842,17 @@ out_error:
+@@ -834,6 +834,17 @@ out_error:
*/
static void mtd_set_dev_defaults(struct mtd_info *mtd)
{
projects / openwrt / staging / pepe2k.git / commitdiff