Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

ubi: Fix seq_file usage in detailed_erase_block_info debugfs file

Browse source 
[ Upstream commit 0e7572cffe442290c347e779bf8bd4306bb0aa7c ]

3bfa7e141b0b ("fs/seq_file.c: seq_read(): add info message about buggy .next functions")
showed that we don't use seq_file correctly.
So make sure that our ->next function always updates the position.

Fixes: 7bccd12d27 ("ubi: Add debugfs file for tracking PEB state")
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Richard Weinberger 2020-05-02 14:48:02 +02:00 committed by Greg Kroah-Hartman
parent c3c1cf3dbb
commit 3251a0749e
1 changed files with 2 additions and 10 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

12
drivers/mtd/ubi/debug.c
View file

@ -405,9 +405,6 @@ static void *eraseblk_count_seq_start(struct seq_file *s, loff_t *pos)
{
struct ubi_device *ubi = s->private;
if (*pos == 0)
return SEQ_START_TOKEN;
if (*pos < ubi->peb_count)
return pos;
@ -421,8 +418,6 @@ static void *eraseblk_count_seq_next(struct seq_file *s, void *v, loff_t *pos)
{
struct ubi_device *ubi = s->private;
if (v == SEQ_START_TOKEN)
return pos;
(*pos)++;
if (*pos < ubi->peb_count)
@ -444,11 +439,8 @@ static int eraseblk_count_seq_show(struct seq_file *s, void *iter)
int err;
/* If this is the start, print a header */
if (iter == SEQ_START_TOKEN) {
seq_puts(s,
"physical_block_number\terase_count\tblock_status\tread_status\n");
return 0;
}
if (*block_number == 0)
seq_puts(s, "physical_block_number\terase_count\n");
err = ubi_io_is_bad(ubi, *block_number);
if (err)