8e458e9e86
Backport two commits from Linux 6.3 wiring up device node parents of ubi devices (pointing to their MTD parent) as well as ubiblock devices (poiting to their parent UBI volume). Signed-off-by: Daniel Golle <daniel@makrotopia.org>
60 lines
2.0 KiB
Diff
60 lines
2.0 KiB
Diff
From 2a2af518266a29323cf30c3f9ba9ef2ceb1dd84b Mon Sep 17 00:00:00 2001
|
|
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
|
|
Date: Thu, 16 Oct 2014 20:52:16 +0200
|
|
Subject: [PATCH] UBI: Detect EOF mark and erase all remaining blocks
|
|
MIME-Version: 1.0
|
|
Content-Type: text/plain; charset=UTF-8
|
|
Content-Transfer-Encoding: 8bit
|
|
|
|
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
|
|
---
|
|
drivers/mtd/ubi/attach.c | 5 +++++
|
|
drivers/mtd/ubi/io.c | 4 ++++
|
|
drivers/mtd/ubi/ubi.h | 1 +
|
|
3 files changed, 10 insertions(+)
|
|
|
|
--- a/drivers/mtd/ubi/attach.c
|
|
+++ b/drivers/mtd/ubi/attach.c
|
|
@@ -82,6 +82,9 @@ static int self_check_ai(struct ubi_devi
|
|
#define AV_ADD BIT(1)
|
|
#define AV_FIND_OR_ADD (AV_FIND | AV_ADD)
|
|
|
|
+/* Set on finding block with 0xdeadc0de, indicates erasing all blocks behind */
|
|
+bool erase_all_next;
|
|
+
|
|
/**
|
|
* find_or_add_av - internal function to find a volume, add a volume or do
|
|
* both (find and add if missing).
|
|
@@ -1580,6 +1583,8 @@ int ubi_attach(struct ubi_device *ubi, i
|
|
if (!ai)
|
|
return -ENOMEM;
|
|
|
|
+ erase_all_next = false;
|
|
+
|
|
#ifdef CONFIG_MTD_UBI_FASTMAP
|
|
/* On small flash devices we disable fastmap in any case. */
|
|
if ((int)mtd_div_by_eb(ubi->mtd->size, ubi->mtd) <= UBI_FM_MAX_START) {
|
|
--- a/drivers/mtd/ubi/io.c
|
|
+++ b/drivers/mtd/ubi/io.c
|
|
@@ -717,6 +717,10 @@ int ubi_io_read_ec_hdr(struct ubi_device
|
|
}
|
|
|
|
magic = be32_to_cpu(ec_hdr->magic);
|
|
+ if (magic == 0xdeadc0de)
|
|
+ erase_all_next = true;
|
|
+ if (erase_all_next)
|
|
+ return read_err ? UBI_IO_FF_BITFLIPS : UBI_IO_FF;
|
|
if (magic != UBI_EC_HDR_MAGIC) {
|
|
if (mtd_is_eccerr(read_err))
|
|
return UBI_IO_BAD_HDR_EBADMSG;
|
|
--- a/drivers/mtd/ubi/ubi.h
|
|
+++ b/drivers/mtd/ubi/ubi.h
|
|
@@ -822,6 +822,7 @@ extern struct mutex ubi_devices_mutex;
|
|
extern struct blocking_notifier_head ubi_notifiers;
|
|
|
|
/* attach.c */
|
|
+extern bool erase_all_next;
|
|
struct ubi_ainf_peb *ubi_alloc_aeb(struct ubi_attach_info *ai, int pnum,
|
|
int ec);
|
|
void ubi_free_aeb(struct ubi_attach_info *ai, struct ubi_ainf_peb *aeb);
|