generic: don't lock when recursively deleting partitions

When recursively deleting partitions, don't acquire the masters
partition lock twice. Otherwise the process endy up in a deadlocked
state.

Signed-off-by: David Bauer <mail@david-bauer.net>

diff --git a/target/linux/generic/pending-5.10/499-mtd-don-t-lock-when-recursively-deleting-partitions.patch b/target/linux/generic/pending-5.10/499-mtd-don-t-lock-when-recursively-deleting-partitions.patch
new file mode 100644 (file)
index 0000000..505131b
--- /dev/null
+++ b/target/linux/generic/pending-5.10/499-mtd-don-t-lock-when-recursively-deleting-partitions.patch
@@ -0,0 +1,24 @@
+From: David Bauer <mail@david-bauer.net>
+Date: Wed, 17 Feb 2021 03:21:39 +0100
+Subject: [PATCH] mtd: don't lock when recursively deleting partitions
+
+When recursively deleting partitions, don't acquire the masters
+partition lock twice. Otherwise the process endy up in a deadlocked
+state.
+
+Signed-off-by: David Bauer <mail@david-bauer.net>
+---
+ drivers/mtd/mtdpart.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/mtd/mtdpart.c
++++ b/drivers/mtd/mtdpart.c
+@@ -474,7 +474,7 @@ static int __del_mtd_partitions(struct m
+ 
+       list_for_each_entry_safe(child, next, &mtd->partitions, part.node) {
+               if (mtd_has_partitions(child))
+-                      del_mtd_partitions(child);
++                      __del_mtd_partitions(child);
+ 
+               pr_info("Deleting %s MTD partition\n", child->name);
+               ret = del_mtd_device(child);