diff options
Diffstat (limited to 'drivers/ipack/devices/ipoctal.c')
| -rw-r--r-- | drivers/ipack/devices/ipoctal.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/ipack/devices/ipoctal.c b/drivers/ipack/devices/ipoctal.c index 9cd5572457ff..5ce2c4c5bb32 100644 --- a/drivers/ipack/devices/ipoctal.c +++ b/drivers/ipack/devices/ipoctal.c @@ -191,6 +191,8 @@ static void ipoctal_irq_channel(struct ipoctal_channel *channel) tty = tty_port_tty_get(&channel->tty_port); if (!tty) return; + + spin_lock(&channel->lock); /* The HW is organized in pair of channels. See which register we need * to read from */ isr = ioread8(&channel->block_regs->r.isr); @@ -216,6 +218,7 @@ static void ipoctal_irq_channel(struct ipoctal_channel *channel) tty_flip_buffer_push(tty); tty_kref_put(tty); + spin_unlock(&channel->lock); } static irqreturn_t ipoctal_irq_handler(void *arg) |