e90e75b12c
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>
39 lines
1.1 KiB
Diff
39 lines
1.1 KiB
Diff
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>
|
|
@@ -699,6 +700,15 @@ 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) {
|
|
+ pr_notice("mtd: device %d (%s) set to be root filesystem\n",
|
|
+ mtd->index, mtd->name);
|
|
+ ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, mtd->index);
|
|
+ }
|
|
+
|
|
return 0;
|
|
|
|
fail_nvmem_add:
|