diff options
Diffstat (limited to 'drivers/serial/serial_ks8695.c')
| -rw-r--r-- | drivers/serial/serial_ks8695.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/serial/serial_ks8695.c b/drivers/serial/serial_ks8695.c index e0665630e4d..52db5cc3f90 100644 --- a/drivers/serial/serial_ks8695.c +++ b/drivers/serial/serial_ks8695.c @@ -110,7 +110,11 @@ static struct console ks8695_console; static void ks8695uart_stop_tx(struct uart_port *port) { if (tx_enabled(port)) { - disable_irq(KS8695_IRQ_UART_TX); + /* use disable_irq_nosync() and not disable_irq() to avoid self + * imposed deadlock by not waiting for irq handler to end, + * since this ks8695uart_stop_tx() is called from interrupt context. + */ + disable_irq_nosync(KS8695_IRQ_UART_TX); tx_enable(port, 0); } } |