77 lines
2.3 KiB
Diff
77 lines
2.3 KiB
Diff
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
|
|
Date: Thu, 6 May 2021 12:33:58 +0200
|
|
Subject: [PATCH] mtd: parsers: ofpart: fix parsing subpartitions
|
|
MIME-Version: 1.0
|
|
Content-Type: text/plain; charset=UTF-8
|
|
Content-Transfer-Encoding: 8bit
|
|
|
|
ofpart was recently patched to not scan random partition nodes as
|
|
subpartitions. That change unfortunately broke scanning valid
|
|
subpartitions like:
|
|
|
|
partitions {
|
|
compatible = "fixed-partitions";
|
|
#address-cells = <1>;
|
|
#size-cells = <1>;
|
|
|
|
partition@0 {
|
|
compatible = "fixed-partitions";
|
|
label = "bootloader";
|
|
reg = <0x0 0x100000>;
|
|
|
|
partition@0 {
|
|
label = "config";
|
|
reg = <0x80000 0x80000>;
|
|
};
|
|
};
|
|
};
|
|
|
|
Fix that regression by adding 1 more code path. We actually need 3
|
|
conditional blocks to support 3 possible cases. This change also makes
|
|
code easier to understand & follow.
|
|
|
|
Reported-by: David Bauer <mail@david-bauer.net>
|
|
Fixes: 2d751203aacf ("mtd: parsers: ofpart: limit parsing of deprecated DT syntax
|
|
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
|
|
---
|
|
drivers/mtd/parsers/ofpart_core.c | 26 ++++++++++++++------------
|
|
1 file changed, 14 insertions(+), 12 deletions(-)
|
|
|
|
--- a/drivers/mtd/parsers/ofpart_core.c
|
|
+++ b/drivers/mtd/parsers/ofpart_core.c
|
|
@@ -57,20 +57,22 @@ static int parse_fixed_partitions(struct
|
|
if (!mtd_node)
|
|
return 0;
|
|
|
|
- ofpart_node = of_get_child_by_name(mtd_node, "partitions");
|
|
- if (!ofpart_node && !master->parent) {
|
|
- /*
|
|
- * We might get here even when ofpart isn't used at all (e.g.,
|
|
- * when using another parser), so don't be louder than
|
|
- * KERN_DEBUG
|
|
- */
|
|
- pr_debug("%s: 'partitions' subnode not found on %pOF. Trying to parse direct subnodes as partitions.\n",
|
|
- master->name, mtd_node);
|
|
+ if (!master->parent) { /* Master */
|
|
+ ofpart_node = of_get_child_by_name(mtd_node, "partitions");
|
|
+ if (!ofpart_node) {
|
|
+ /*
|
|
+ * We might get here even when ofpart isn't used at all (e.g.,
|
|
+ * when using another parser), so don't be louder than
|
|
+ * KERN_DEBUG
|
|
+ */
|
|
+ pr_debug("%s: 'partitions' subnode not found on %pOF. Trying to parse direct subnodes as partitions.\n",
|
|
+ master->name, mtd_node);
|
|
+ ofpart_node = mtd_node;
|
|
+ dedicated = false;
|
|
+ }
|
|
+ } else { /* Partition */
|
|
ofpart_node = mtd_node;
|
|
- dedicated = false;
|
|
}
|
|
- if (!ofpart_node)
|
|
- return 0;
|
|
|
|
of_id = of_match_node(parse_ofpart_match_table, ofpart_node);
|
|
if (dedicated && !of_id) {
|