diff options
| -rw-r--r-- | drivers/tty/serial/sh-sci.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index c6e8ca2e5f7d..859b173e3b82 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -1921,7 +1921,7 @@ out_nomem: static void sci_free_irq(struct sci_port *port) { - int i; + int i, j; /* * Intentionally in reverse order so we iterate over the muxed @@ -1937,6 +1937,13 @@ static void sci_free_irq(struct sci_port *port) if (unlikely(irq < 0)) continue; + /* Check if already freed (irq was muxed) */ + for (j = 0; j < i; j++) + if (port->irqs[j] == irq) + j = i + 1; + if (j > i) + continue; + free_irq(port->irqs[i], port); kfree(port->irqstr[i]); |