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-rw-r--r--Documentation/admin-guide/sysctl/net.rst2
-rw-r--r--net/core/dev.c2
-rw-r--r--net/core/sysctl_net_core.c2
3 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/admin-guide/sysctl/net.rst b/Documentation/admin-guide/sysctl/net.rst
index 2090bfc69aa5..c941b214e0b7 100644
--- a/Documentation/admin-guide/sysctl/net.rst
+++ b/Documentation/admin-guide/sysctl/net.rst
@@ -320,7 +320,7 @@ waiting for a network device refcount to drop to 0 during device
unregistration. A lower value may be useful during bisection to detect
a leaked reference faster. A larger value may be useful to prevent false
warnings on slow/loaded systems.
-Default value is 10, minimum 0, maximum 3600.
+Default value is 10, minimum 1, maximum 3600.
optmem_max
----------
diff --git a/net/core/dev.c b/net/core/dev.c
index 48b529d59157..b4c67a5be606 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -10460,7 +10460,7 @@ static void netdev_wait_allrefs(struct net_device *dev)
refcnt = netdev_refcnt_read(dev);
- if (refcnt &&
+ if (refcnt != 1 &&
time_after(jiffies, warning_time +
netdev_unregister_timeout_secs * HZ)) {
pr_emerg("unregister_netdevice: waiting for %s to become free. Usage count = %d\n",
diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c
index d84c8a1b280e..c8496c1142c9 100644
--- a/net/core/sysctl_net_core.c
+++ b/net/core/sysctl_net_core.c
@@ -577,7 +577,7 @@ static struct ctl_table net_core_table[] = {
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
+ .extra1 = SYSCTL_ONE,
.extra2 = &int_3600,
},
{ }