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path: root/drivers/net/dsa/mv88e6xxx/chip.c
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Diffstat (limited to 'drivers/net/dsa/mv88e6xxx/chip.c')
-rw-r--r--drivers/net/dsa/mv88e6xxx/chip.c21
1 files changed, 13 insertions, 8 deletions
diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 9dd270978064..a80767d3c405 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -343,6 +343,7 @@ static const struct irq_domain_ops mv88e6xxx_g1_irq_domain_ops = {
.xlate = irq_domain_xlate_twocell,
};
+/* To be called with reg_lock held */
static void mv88e6xxx_g1_irq_free_common(struct mv88e6xxx_chip *chip)
{
int irq, virq;
@@ -362,9 +363,15 @@ static void mv88e6xxx_g1_irq_free_common(struct mv88e6xxx_chip *chip)
static void mv88e6xxx_g1_irq_free(struct mv88e6xxx_chip *chip)
{
- mv88e6xxx_g1_irq_free_common(chip);
-
+ /*
+ * free_irq must be called without reg_lock taken because the irq
+ * handler takes this lock, too.
+ */
free_irq(chip->irq, chip);
+
+ mutex_lock(&chip->reg_lock);
+ mv88e6xxx_g1_irq_free_common(chip);
+ mutex_unlock(&chip->reg_lock);
}
static int mv88e6xxx_g1_irq_setup_common(struct mv88e6xxx_chip *chip)
@@ -469,10 +476,12 @@ static int mv88e6xxx_irq_poll_setup(struct mv88e6xxx_chip *chip)
static void mv88e6xxx_irq_poll_free(struct mv88e6xxx_chip *chip)
{
- mv88e6xxx_g1_irq_free_common(chip);
-
kthread_cancel_delayed_work_sync(&chip->irq_poll_work);
kthread_destroy_worker(chip->kworker);
+
+ mutex_lock(&chip->reg_lock);
+ mv88e6xxx_g1_irq_free_common(chip);
+ mutex_unlock(&chip->reg_lock);
}
int mv88e6xxx_wait(struct mv88e6xxx_chip *chip, int addr, int reg, u16 mask)
@@ -4523,12 +4532,10 @@ out_g2_irq:
if (chip->info->g2_irqs > 0)
mv88e6xxx_g2_irq_free(chip);
out_g1_irq:
- mutex_lock(&chip->reg_lock);
if (chip->irq > 0)
mv88e6xxx_g1_irq_free(chip);
else
mv88e6xxx_irq_poll_free(chip);
- mutex_unlock(&chip->reg_lock);
out:
if (pdata)
dev_put(pdata->netdev);
@@ -4556,12 +4563,10 @@ static void mv88e6xxx_remove(struct mdio_device *mdiodev)
if (chip->info->g2_irqs > 0)
mv88e6xxx_g2_irq_free(chip);
- mutex_lock(&chip->reg_lock);
if (chip->irq > 0)
mv88e6xxx_g1_irq_free(chip);
else
mv88e6xxx_irq_poll_free(chip);
- mutex_unlock(&chip->reg_lock);
}
static const struct of_device_id mv88e6xxx_of_match[] = {