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kernel: fix mtd squashfs root regression on targets with CONFIG_FIT_PARTITION

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Move 480-mtd-set-rootfs-to-be-root-dev.patch to hack-5.10 and fix assumption
about the block device index.

Fixes: 2809d00007 ("kernel: support FIT partition parser on mtdblock devices")
Acked-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2021-04-10 17:00:57 +02:00
parent f07fe36f22
commit 734c3f7148
3 changed files with 9 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
target/linux/generic/hack-5.10/402-mtd-blktrans-call-add-disks-after-mtd-device.patch
View File

@ -74,7 +74,7 @@ Signed-off-by: Daniel Golle <daniel@makrotopia.org>
unsigned long flags;
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -32,6 +32,7 @@
@@ -31,6 +31,7 @@
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
@ -82,7 +82,7 @@ Signed-off-by: Daniel Golle <daniel@makrotopia.org>
#include "mtdcore.h"
@@ -858,6 +859,8 @@ int mtd_device_parse_register(struct mtd
@@ -848,6 +849,8 @@ int mtd_device_parse_register(struct mtd
register_reboot_notifier(&mtd->reboot_notifier);
}

8
target/linux/generic/pending-5.10/480-mtd-set-rootfs-to-be-root-dev.patch → target/linux/generic/hack-5.10/420-mtd-set-rootfs-to-be-root-dev.patch
View File

@ -20,7 +20,7 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
#include <linux/nvmem-provider.h>
#include <linux/mtd/mtd.h>
@@ -693,6 +694,15 @@ int add_mtd_device(struct mtd_info *mtd)
@@ -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);
@ -28,9 +28,13 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
+ 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);
+ ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, mtd->index);
+#ifdef CONFIG_FIT_PARTITION
+ index <<= 1;
+#endif
+ ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, index);
+ }
+
return 0;

2
target/linux/generic/pending-5.10/495-mtd-core-add-get_mtd_device_by_node.patch
View File

@ -17,7 +17,7 @@ Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -1053,6 +1053,44 @@ out_unlock:
@@ -1043,6 +1043,44 @@ out_unlock:
}
EXPORT_SYMBOL_GPL(get_mtd_device_nm);