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It's meant to provide upstream support for mtd & NVMEM. It's required
e.g. for reading MAC address from mtd partition content. It seems to be
in a final shape so it's worth testing.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
(cherry picked from commit e90e75b12c)
70 lines
1.9 KiB
Diff
70 lines
1.9 KiB
Diff
From 2d751203aacf86a1b301a188d8551c7da91043ab Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
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Date: Tue, 2 Mar 2021 20:00:12 +0100
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Subject: [PATCH] mtd: parsers: ofpart: limit parsing of deprecated DT syntax
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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For backward compatibility ofpart still supports the old syntax like:
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spi-flash@0 {
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compatible = "jedec,spi-nor";
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reg = <0x0>;
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partition@0 {
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label = "bootloader";
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reg = <0x0 0x100000>;
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};
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};
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(without "partitions" subnode).
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There is no reason however to support nested partitions without a clear
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"compatible" string like:
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partitions {
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compatible = "fixed-partitions";
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#address-cells = <1>;
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#size-cells = <1>;
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partition@0 {
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label = "bootloader";
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reg = <0x0 0x100000>;
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partition@0 {
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label = "config";
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reg = <0x80000 0x80000>;
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};
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};
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};
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(we never officially supported or documented that).
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Make sure ofpart doesn't attempt to parse above.
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Cc: Ansuel Smith <ansuelsmth@gmail.com>
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Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
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Link: https://lore.kernel.org/linux-mtd/20210302190012.1255-1-zajec5@gmail.com
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---
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drivers/mtd/parsers/ofpart_core.c | 4 +++-
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1 file changed, 3 insertions(+), 1 deletion(-)
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--- a/drivers/mtd/parsers/ofpart_core.c
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+++ b/drivers/mtd/parsers/ofpart_core.c
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@@ -53,7 +53,7 @@ static int parse_fixed_partitions(struct
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return 0;
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ofpart_node = of_get_child_by_name(mtd_node, "partitions");
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- if (!ofpart_node) {
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+ if (!ofpart_node && !mtd_is_partition(master)) {
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/*
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* We might get here even when ofpart isn't used at all (e.g.,
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* when using another parser), so don't be louder than
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@@ -64,6 +64,8 @@ static int parse_fixed_partitions(struct
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ofpart_node = mtd_node;
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dedicated = false;
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}
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+ if (!ofpart_node)
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+ return 0;
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of_id = of_match_node(parse_ofpart_match_table, ofpart_node);
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if (dedicated && !of_id) {
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