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-rw-r--r--target/linux/generic/files/drivers/net/phy/ar8216.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/target/linux/generic/files/drivers/net/phy/ar8216.c b/target/linux/generic/files/drivers/net/phy/ar8216.c
index 1521ea317a..c199ac178c 100644
--- a/target/linux/generic/files/drivers/net/phy/ar8216.c
+++ b/target/linux/generic/files/drivers/net/phy/ar8216.c
@@ -29,6 +29,7 @@
#include <linux/phy.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
+#include <linux/lockdep.h>
#include "ar8216.h"
/* size of the vlan table */
@@ -122,6 +123,8 @@ ar8216_rmw(struct ar8216_priv *priv, int reg, u32 mask, u32 val)
{
u32 v;
+ lockdep_assert_held(&priv->reg_mutex);
+
v = priv->read(priv, reg);
v &= ~mask;
v |= val;