diff options
Diffstat (limited to 'drivers/tty/serial/8250/8250_fsl.c')
| -rw-r--r-- | drivers/tty/serial/8250/8250_fsl.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/tty/serial/8250/8250_fsl.c b/drivers/tty/serial/8250/8250_fsl.c index 5cf675eadefe..b4ed442082a8 100644 --- a/drivers/tty/serial/8250/8250_fsl.c +++ b/drivers/tty/serial/8250/8250_fsl.c @@ -51,7 +51,8 @@ int fsl8250_handle_irq(struct uart_port *port) * immediately and interrupt the CPU again. The hardware clears LSR.BI * when the next valid char is read.) */ - if (unlikely(up->lsr_saved_flags & UART_LSR_BI)) { + if (unlikely((iir & UART_IIR_ID) == UART_IIR_RLSI && + (up->lsr_saved_flags & UART_LSR_BI))) { up->lsr_saved_flags &= ~UART_LSR_BI; port->serial_in(port, UART_RX); uart_port_unlock_irqrestore(&up->port, flags); |