diff options
Diffstat (limited to 'target/linux/generic/pending-5.15/410-mtd-parsers-ofpart-fix-parsing-subpartitions.patch')
| -rw-r--r-- | target/linux/generic/pending-5.15/410-mtd-parsers-ofpart-fix-parsing-subpartitions.patch | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/target/linux/generic/pending-5.15/410-mtd-parsers-ofpart-fix-parsing-subpartitions.patch b/target/linux/generic/pending-5.15/410-mtd-parsers-ofpart-fix-parsing-subpartitions.patch new file mode 100644 index 0000000000..353fa96748 --- /dev/null +++ b/target/linux/generic/pending-5.15/410-mtd-parsers-ofpart-fix-parsing-subpartitions.patch @@ -0,0 +1,76 @@ +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) { |