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| author | Rafał Miłecki <rafal@milecki.pl> | 2022-11-07 19:24:48 +0100 |
|---|---|---|
| committer | Rafał Miłecki <rafal@milecki.pl> | 2022-11-08 09:12:16 +0100 |
| commit | d33e49857e3ad76586ebe55334996b15cd45ca1b (patch) | |
| tree | d1dfb45f7ea9b6a0073fba46ee40113e616f6338 /target/linux/generic/hack-5.15/420-mtd-support-OpenWrt-s-MTD_ROOTFS_ROOT_DEV.patch | |
| parent | 6a64eb2664c13bc7d6800747066603c27fcad8e0 (diff) | |
| download | upstream-d33e49857e3ad76586ebe55334996b15cd45ca1b.tar.gz upstream-d33e49857e3ad76586ebe55334996b15cd45ca1b.tar.bz2 upstream-d33e49857e3ad76586ebe55334996b15cd45ca1b.zip | |
kernel: backport support for "linux,rootfs" in DT
This DT property allows marking flash partition that Linux should use as
a root device. It's useful for devices that don't use U-Boot and cmdline
parser for partitioning. It may be used with "fixed-partitions" or some
dynamic partitioning based on flash content.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Diffstat (limited to 'target/linux/generic/hack-5.15/420-mtd-support-OpenWrt-s-MTD_ROOTFS_ROOT_DEV.patch')
| -rw-r--r-- | target/linux/generic/hack-5.15/420-mtd-support-OpenWrt-s-MTD_ROOTFS_ROOT_DEV.patch | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/target/linux/generic/hack-5.15/420-mtd-support-OpenWrt-s-MTD_ROOTFS_ROOT_DEV.patch b/target/linux/generic/hack-5.15/420-mtd-support-OpenWrt-s-MTD_ROOTFS_ROOT_DEV.patch new file mode 100644 index 0000000000..15531df49e --- /dev/null +++ b/target/linux/generic/hack-5.15/420-mtd-support-OpenWrt-s-MTD_ROOTFS_ROOT_DEV.patch @@ -0,0 +1,24 @@ +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl> +Date: Mon, 7 Nov 2022 23:48:24 +0100 +Subject: [PATCH] mtd: support OpenWrt's MTD_ROOTFS_ROOT_DEV +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +This allows setting ROOT_DEV to MTD partition named "rootfs". + +Signed-off-by: Rafał Miłecki <rafal@milecki.pl> +--- + +--- a/drivers/mtd/mtdcore.c ++++ b/drivers/mtd/mtdcore.c +@@ -759,7 +759,8 @@ int add_mtd_device(struct mtd_info *mtd) + + mutex_unlock(&mtd_table_mutex); + +- if (of_find_property(mtd_get_of_node(mtd), "linux,rootfs", NULL)) { ++ if (of_find_property(mtd_get_of_node(mtd), "linux,rootfs", NULL) || ++ (IS_ENABLED(CONFIG_MTD_ROOTFS_ROOT_DEV) && !strcmp(mtd->name, "rootfs") && ROOT_DEV == 0)) { + if (IS_BUILTIN(CONFIG_MTD)) { + pr_info("mtd: setting mtd%d (%s) as root device\n", mtd->index, mtd->name); + ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, mtd->index); |