From: Bang Li <libang.linuxer@gmail.com>
To: miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
Cc: linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org,
Bang Li <libang.linuxer@gmail.com>
Subject: [PATCH] mtdblock: tolerate corrected bit-flips
Date: Thu, 23 Mar 2023 22:03:50 +0800 [thread overview]
Message-ID: <20230323140350.69908-1-libang.linuxer@gmail.com> (raw)
mtd_read() may return -EUCLEAN in case of corrected bit-flips.This
particular condition should not be treated like an error.
Signed-off-by: Bang Li <libang.linuxer@gmail.com>
---
drivers/mtd/mtdblock.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/mtd/mtdblock.c b/drivers/mtd/mtdblock.c
index 1e94e7d10b8b..a0a1194dc1d9 100644
--- a/drivers/mtd/mtdblock.c
+++ b/drivers/mtd/mtdblock.c
@@ -153,7 +153,7 @@ static int do_cached_write (struct mtdblk_dev *mtdblk, unsigned long pos,
mtdblk->cache_state = STATE_EMPTY;
ret = mtd_read(mtd, sect_start, sect_size,
&retlen, mtdblk->cache_data);
- if (ret)
+ if (ret && !mtd_is_bitflip(ret))
return ret;
if (retlen != sect_size)
return -EIO;
@@ -188,8 +188,12 @@ static int do_cached_read (struct mtdblk_dev *mtdblk, unsigned long pos,
pr_debug("mtdblock: read on \"%s\" at 0x%lx, size 0x%x\n",
mtd->name, pos, len);
- if (!sect_size)
- return mtd_read(mtd, pos, len, &retlen, buf);
+ if (!sect_size) {
+ ret = mtd_read(mtd, pos, len, &retlen, buf);
+ if (ret && !mtd_is_bitflip(ret))
+ return ret;
+ return 0;
+ }
while (len > 0) {
unsigned long sect_start = (pos/sect_size)*sect_size;
@@ -209,7 +213,7 @@ static int do_cached_read (struct mtdblk_dev *mtdblk, unsigned long pos,
memcpy (buf, mtdblk->cache_data + offset, size);
} else {
ret = mtd_read(mtd, pos, size, &retlen, buf);
- if (ret)
+ if (ret && !mtd_is_bitflip(ret))
return ret;
if (retlen != size)
return -EIO;
--
2.25.1
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next reply other threads:[~2023-03-23 14:04 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-23 14:03 Bang Li [this message]
2023-03-28 12:58 ` [PATCH] mtdblock: tolerate corrected bit-flips Miquel Raynal
2023-03-28 13:21 ` Richard Weinberger
2023-03-28 14:00 ` Miquel Raynal
-- strict thread matches above, loose matches on Subject: below --
2023-03-14 16:56 Bang Li
2023-03-22 16:08 ` Miquel Raynal
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