diff options
Diffstat (limited to 'drivers/tty/serial/serial_port.c')
| -rw-r--r-- | drivers/tty/serial/serial_port.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/tty/serial/serial_port.c b/drivers/tty/serial/serial_port.c index 7e3a1c7b097c..91a338d3cb34 100644 --- a/drivers/tty/serial/serial_port.c +++ b/drivers/tty/serial/serial_port.c @@ -11,6 +11,7 @@ #include <linux/of.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> +#include <linux/pnp.h> #include <linux/property.h> #include <linux/serial_core.h> #include <linux/spinlock.h> @@ -23,7 +24,7 @@ static int __serial_port_busy(struct uart_port *port) { return !uart_tx_stopped(port) && - uart_circ_chars_pending(&port->state->xmit); + !kfifo_is_empty(&port->state->port.xmit_fifo); } static int serial_port_runtime_resume(struct device *dev) @@ -255,7 +256,11 @@ static int __uart_read_properties(struct uart_port *port, bool use_defaults) if (dev_is_platform(dev)) ret = platform_get_irq(to_platform_device(dev), 0); - else + else if (dev_is_pnp(dev)) { + ret = pnp_irq(to_pnp_dev(dev), 0); + if (ret < 0) + ret = -ENXIO; + } else ret = fwnode_irq_get(dev_fwnode(dev), 0); if (ret == -EPROBE_DEFER) return ret; |