[PATCH v2 net-next 6/6] net: dsa: mv88e6xxx: Hold the mutex while freeing g1 interrupts

[Andrew Lunn]

Freeing interrupts requires switch register access to mask the
interrupts. Hence we must hold the register mutex.

Signed-off-by: Andrew Lunn <and...@lunn.ch>
---
 drivers/net/dsa/mv88e6xxx/chip.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 614b2f68d401..e30d0eaf2b5f 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -3916,8 +3916,11 @@ static int mv88e6xxx_probe(struct mdio_device *mdiodev)
        if (mv88e6xxx_has(chip, MV88E6XXX_FLAG_G2_INT) && chip->irq > 0)
                mv88e6xxx_g2_irq_free(chip);
 out_g1_irq:
-       if (chip->irq > 0)
+       if (chip->irq > 0) {
+               mutex_lock(&chip->reg_lock);
                mv88e6xxx_g1_irq_free(chip);
+               mutex_unlock(&chip->reg_lock);
+       }
 out:
        return err;
 }
-- 
2.10.2