[PATCH v2 3/3] misc-utils: flash_erase: Fix Jffs2 type flash erase problem
Xiaolei Li
xiaolei.li at mediatek.com
Tue Apr 10 00:36:57 PDT 2018
Currently, Jffs2 clean marker is not written actually, because the oob
write length is set to 0 when do mtd_write().
So, get OOB available size at first, and set the correct clean marker
length, then program clean marker to free OOB area.
Fixes: d7e86124d55b ("mtd-utils: Support jffs2 flash-erase for large OOB (>32b)")
Signed-off-by: Xiaolei Li <xiaolei.li at mediatek.com>
---
misc-utils/flash_erase.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/misc-utils/flash_erase.c b/misc-utils/flash_erase.c
index 0c9449f..e7a00ae 100644
--- a/misc-utils/flash_erase.c
+++ b/misc-utils/flash_erase.c
@@ -92,7 +92,7 @@ int main(int argc, char *argv[])
{
libmtd_t mtd_desc;
struct mtd_dev_info mtd;
- int fd;
+ int fd, cmlen = 8;
unsigned long long start;
unsigned int eb, eb_start, eb_cnt;
bool isNAND;
@@ -190,10 +190,11 @@ int main(int argc, char *argv[])
if (jffs2) {
cleanmarker.magic = cpu_to_je16 (JFFS2_MAGIC_BITMASK);
cleanmarker.nodetype = cpu_to_je16 (JFFS2_NODETYPE_CLEANMARKER);
- if (!isNAND)
+ if (!isNAND) {
cleanmarker.totlen = cpu_to_je32(sizeof(cleanmarker));
- else {
+ } else {
cleanmarker.totlen = cpu_to_je32(8);
+ cmlen = min(mtd.oobavail, 8);
}
cleanmarker.hdr_crc = cpu_to_je32(mtd_crc32(0, &cleanmarker, sizeof(cleanmarker) - 4));
}
@@ -242,7 +243,7 @@ int main(int argc, char *argv[])
/* write cleanmarker */
if (isNAND) {
- if (mtd_write(mtd_desc, &mtd, fd, eb, 0, NULL, 0, &cleanmarker, 0,
+ if (mtd_write(mtd_desc, &mtd, fd, eb, 0, NULL, 0, &cleanmarker, cmlen,
MTD_OPS_AUTO_OOB) != 0) {
sys_errmsg("%s: MTD writeoob failure", mtd_device);
continue;
--
1.9.1
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