From: Liwei Song <[email protected]>
This reverts commit e94b04fcb7d227180b1e6a1bad4832ffedccb473.
The issue that this patch is trying to resolve has been fixed by
upstream commit 19bfa9ebebb5 ("mtd: use refcount to prevent corruption")
so this local patch can be reverted, if not, it will cause an unbalanced
refcnt issue when open/close mtd device.
Signed-off-by: Liwei Song <[email protected]>
Signed-off-by: Bruce Ashfield <[email protected]>
---
Hi Bruce,
The patch has already been merged into the v6.12 standard/base branch,
but it was inadvertently reverted during the merge of the v6.12.62 stable
kernel into certain BSP branches. Please reapply this patch to the following
BSP branches:
v6.12/standard/nxp-sdk-6.12/nxp-soc
v6.12/standard/preempt-rt/nxp-sdk-6.12/nxp-soc
v6.12/standard/xlnx-soc
v6.12/standard/preempt-rt/xlnx-soc
---
drivers/mtd/mtd_blkdevs.c | 7 -------
1 file changed, 7 deletions(-)
diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index
bb953f93c2b86ce3abede6c6ac7dcd0a2d03b403..47ead84407cdcf8f91fda92b71d6ea2095a31a34
100644
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -189,8 +189,6 @@ static int blktrans_open(struct gendisk *disk, blk_mode_t
mode)
kref_get(&dev->ref);
- if (!mutex_trylock(&mtd_table_mutex))
- return ret;
mutex_lock(&dev->lock);
if (dev->open)
@@ -215,7 +213,6 @@ static int blktrans_open(struct gendisk *disk, blk_mode_t
mode)
unlock:
dev->open++;
mutex_unlock(&dev->lock);
- mutex_unlock(&mtd_table_mutex);
return ret;
error_release:
@@ -224,7 +221,6 @@ static int blktrans_open(struct gendisk *disk, blk_mode_t
mode)
error_put:
module_put(dev->tr->owner);
mutex_unlock(&dev->lock);
- mutex_unlock(&mtd_table_mutex);
blktrans_dev_put(dev);
return ret;
}
@@ -233,8 +229,6 @@ static void blktrans_release(struct gendisk *disk)
{
struct mtd_blktrans_dev *dev = disk->private_data;
- if (!mutex_trylock(&mtd_table_mutex))
- return;
mutex_lock(&dev->lock);
if (--dev->open)
@@ -249,7 +243,6 @@ static void blktrans_release(struct gendisk *disk)
}
unlock:
mutex_unlock(&dev->lock);
- mutex_unlock(&mtd_table_mutex);
blktrans_dev_put(dev);
}
---
base-commit: ece8928b78ad84eb550ac96090f055aaa7963a47
change-id: 20251216-v6-12-mtd-dbf0eabc2f6b
Best regards,
--
Kevin Hao <[email protected]>
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