diff options
Diffstat (limited to 'target/linux/generic/hack-5.15/420-mtd-set-rootfs-to-be-root-dev.patch')
| -rw-r--r-- | target/linux/generic/hack-5.15/420-mtd-set-rootfs-to-be-root-dev.patch | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/target/linux/generic/hack-5.15/420-mtd-set-rootfs-to-be-root-dev.patch b/target/linux/generic/hack-5.15/420-mtd-set-rootfs-to-be-root-dev.patch new file mode 100644 index 0000000000..b071ac61ec --- /dev/null +++ b/target/linux/generic/hack-5.15/420-mtd-set-rootfs-to-be-root-dev.patch @@ -0,0 +1,42 @@ +From: Gabor Juhos <juhosg@openwrt.org> +Subject: kernel/3.1[02]: move MTD root device setup code to mtdcore + +The current code only allows to automatically set +root device on MTD partitions. Move the code to MTD +core to allow to use it with all MTD devices. + +Signed-off-by: Gabor Juhos <juhosg@openwrt.org> +--- + drivers/mtd/mtdcore.c | 10 ++++++++++ + 1 file changed, 10 insertions(+) + +--- a/drivers/mtd/mtdcore.c ++++ b/drivers/mtd/mtdcore.c +@@ -27,6 +27,7 @@ + #include <linux/reboot.h> + #include <linux/leds.h> + #include <linux/debugfs.h> ++#include <linux/root_dev.h> + #include <linux/nvmem-provider.h> + + #include <linux/mtd/mtd.h> +@@ -694,6 +695,19 @@ int add_mtd_device(struct mtd_info *mtd) + of this try_ nonsense, and no bitching about it + either. :) */ + __module_get(THIS_MODULE); ++ ++ if (!strcmp(mtd->name, "rootfs") && ++ IS_ENABLED(CONFIG_MTD_ROOTFS_ROOT_DEV) && ++ ROOT_DEV == 0) { ++ unsigned int index = mtd->index; ++ pr_notice("mtd: device %d (%s) set to be root filesystem\n", ++ mtd->index, mtd->name); ++#ifdef CONFIG_FIT_PARTITION ++ index <<= 2; ++#endif ++ ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, index); ++ } ++ + return 0; + + fail_nvmem_add: |