diff options
Diffstat (limited to 'target/linux/generic/backport-5.15/404-v5.13-mtd-parsers-ofpart-limit-parsing-of-deprecated-DT-sy.patch')
| -rw-r--r-- | target/linux/generic/backport-5.15/404-v5.13-mtd-parsers-ofpart-limit-parsing-of-deprecated-DT-sy.patch | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.15/404-v5.13-mtd-parsers-ofpart-limit-parsing-of-deprecated-DT-sy.patch b/target/linux/generic/backport-5.15/404-v5.13-mtd-parsers-ofpart-limit-parsing-of-deprecated-DT-sy.patch new file mode 100644 index 0000000000..55a91d7680 --- /dev/null +++ b/target/linux/generic/backport-5.15/404-v5.13-mtd-parsers-ofpart-limit-parsing-of-deprecated-DT-sy.patch @@ -0,0 +1,69 @@ +From 2d751203aacf86a1b301a188d8551c7da91043ab Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl> +Date: Tue, 2 Mar 2021 20:00:12 +0100 +Subject: [PATCH] mtd: parsers: ofpart: limit parsing of deprecated DT syntax +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +For backward compatibility ofpart still supports the old syntax like: +spi-flash@0 { + compatible = "jedec,spi-nor"; + reg = <0x0>; + + partition@0 { + label = "bootloader"; + reg = <0x0 0x100000>; + }; +}; +(without "partitions" subnode). + +There is no reason however to support nested partitions without a clear +"compatible" string like: +partitions { + compatible = "fixed-partitions"; + #address-cells = <1>; + #size-cells = <1>; + + partition@0 { + label = "bootloader"; + reg = <0x0 0x100000>; + + partition@0 { + label = "config"; + reg = <0x80000 0x80000>; + }; + }; +}; +(we never officially supported or documented that). + +Make sure ofpart doesn't attempt to parse above. + +Cc: Ansuel Smith <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/20210302190012.1255-1-zajec5@gmail.com +--- + drivers/mtd/parsers/ofpart_core.c | 4 +++- + 1 file changed, 3 insertions(+), 1 deletion(-) + +--- a/drivers/mtd/parsers/ofpart_core.c ++++ b/drivers/mtd/parsers/ofpart_core.c +@@ -53,7 +53,7 @@ static int parse_fixed_partitions(struct + return 0; + + ofpart_node = of_get_child_by_name(mtd_node, "partitions"); +- if (!ofpart_node) { ++ 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 +@@ -64,6 +64,8 @@ static int parse_fixed_partitions(struct + 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) { |