[PATCH net v2] net: dsa: mv88e6xxx: lock mutex when freeing IRQs

[Vivien Didelot]

mv88e6xxx_g2_irq_free locks the registers mutex, but not
mv88e6xxx_g1_irq_free, which results in a stack trace from
assert_reg_lock when unloading the mv88e6xxx module. Fix this.

Fixes: 3460a5770ce9 ("net: dsa: mv88e6xxx: Mask g1 interrupts and free 
interrupt")
Signed-off-by: Vivien Didelot <vivien.dide...@savoirfairelinux.com>
---
 drivers/net/dsa/mv88e6xxx/chip.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index c6678aa9b4ef..e7ff7483d2fb 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -3947,7 +3947,9 @@ static void mv88e6xxx_remove(struct mdio_device *mdiodev)
        if (chip->irq > 0) {
                if (chip->info->g2_irqs > 0)
                        mv88e6xxx_g2_irq_free(chip);
+               mutex_lock(&chip->reg_lock);
                mv88e6xxx_g1_irq_free(chip);
+               mutex_unlock(&chip->reg_lock);
        }
 }
 
-- 
2.14.1