diff options
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/mtdcore.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index 756fd27f4cfe..e0193054f8d9 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -28,6 +28,7 @@ #include <linux/leds.h> #include <linux/debugfs.h> #include <linux/nvmem-provider.h> +#include <linux/root_dev.h> #include <linux/mtd/mtd.h> #include <linux/mtd/partitions.h> @@ -737,6 +738,17 @@ int add_mtd_device(struct mtd_info *mtd) not->add(mtd); mutex_unlock(&mtd_table_mutex); + + if (of_find_property(mtd_get_of_node(mtd), "linux,rootfs", NULL)) { + 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); + } else { + pr_warn("mtd: can't set mtd%d (%s) as root device - mtd must be builtin\n", + mtd->index, mtd->name); + } + } + /* We _know_ we aren't being removed, because our caller is still holding us here. So none of this try_ nonsense, and no bitching about it |