[PATCH net-next 01/17] net: dsa: mv88e6xxx: use lockdep_assert_held() if CONFIG_LOCKDEP

[Luke Howard]

If CONFIG_LOCKDEP is enabled, use lockdep_assert_held() rather than an
explicit check for the chip's register mutex.

Signed-off-by: Luke Howard <lukeh@xxxxxxxx>
---
 drivers/net/dsa/mv88e6xxx/chip.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 80b877c74513d..eada2f71cb7b3 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -48,10 +48,14 @@
 
 static void assert_reg_lock(struct mv88e6xxx_chip *chip)
 {
+#ifdef CONFIG_LOCKDEP
+	lockdep_assert_held(&chip->reg_lock);
+#else
 	if (unlikely(!mutex_is_locked(&chip->reg_lock))) {
 		dev_err(chip->dev, "Switch registers lock not held!\n");
 		dump_stack();
 	}
+#endif
 }
 
 int mv88e6xxx_read(struct mv88e6xxx_chip *chip, int addr, int reg, u16 *val)

-- 
2.43.0