The yt921x driver contains a helper to create a bitmap of ports
which are members of a bridge.

Move the helper as static inline function into dsa.h, so other driver
can make use of it as well.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
v9: no changes
v8: no changes
v7: new patch
---
 drivers/net/dsa/yt921x.c | 13 -------------
 include/net/dsa.h        | 13 +++++++++++++
 2 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/drivers/net/dsa/yt921x.c b/drivers/net/dsa/yt921x.c
index 904613f4694ad..5b66109ecc235 100644
--- a/drivers/net/dsa/yt921x.c
+++ b/drivers/net/dsa/yt921x.c
@@ -2154,19 +2154,6 @@ yt921x_bridge_join(struct yt921x_priv *priv, int port, u16 ports_mask)
 	return 0;
 }
 
-static u32
-dsa_bridge_ports(struct dsa_switch *ds, const struct net_device *bdev)
-{
-	struct dsa_port *dp;
-	u32 mask = 0;
-
-	dsa_switch_for_each_user_port(dp, ds)
-		if (dsa_port_offloads_bridge_dev(dp, bdev))
-			mask |= BIT(dp->index);
-
-	return mask;
-}
-
 static int
 yt921x_bridge_flags(struct yt921x_priv *priv, int port,
 		    struct switchdev_brport_flags flags)
diff --git a/include/net/dsa.h b/include/net/dsa.h
index 6c17446f3dcc2..e93b4feaca966 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -831,6 +831,19 @@ dsa_tree_offloads_bridge_dev(struct dsa_switch_tree *dst,
 	return false;
 }
 
+static inline u32
+dsa_bridge_ports(struct dsa_switch *ds, const struct net_device *bdev)
+{
+	struct dsa_port *dp;
+	u32 mask = 0;
+
+	dsa_switch_for_each_user_port(dp, ds)
+		if (dsa_port_offloads_bridge_dev(dp, bdev))
+			mask |= BIT(dp->index);
+
+	return mask;
+}
+
 static inline bool dsa_port_tree_same(const struct dsa_port *a,
 				      const struct dsa_port *b)
 {
-- 
2.53.0