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path: root/drivers/tty/serial/xilinx_uartps.c
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Diffstat (limited to 'drivers/tty/serial/xilinx_uartps.c')
-rw-r--r--drivers/tty/serial/xilinx_uartps.c41
1 files changed, 12 insertions, 29 deletions
diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index b0da63737aa1..0dbfd02e3b19 100644
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -1342,24 +1342,11 @@ static struct uart_driver cdns_uart_uart_driver = {
static int cdns_uart_suspend(struct device *device)
{
struct uart_port *port = dev_get_drvdata(device);
- struct tty_struct *tty;
- struct device *tty_dev;
- int may_wake = 0;
-
- /* Get the tty which could be NULL so don't assume it's valid */
- tty = tty_port_tty_get(&port->state->port);
- if (tty) {
- tty_dev = tty->dev;
- may_wake = device_may_wakeup(tty_dev);
- tty_kref_put(tty);
- }
+ int may_wake;
- /*
- * Call the API provided in serial_core.c file which handles
- * the suspend.
- */
- uart_suspend_port(&cdns_uart_uart_driver, port);
- if (!(console_suspend_enabled && !may_wake)) {
+ may_wake = device_may_wakeup(device);
+
+ if (console_suspend_enabled && may_wake) {
unsigned long flags = 0;
spin_lock_irqsave(&port->lock, flags);
@@ -1374,7 +1361,11 @@ static int cdns_uart_suspend(struct device *device)
spin_unlock_irqrestore(&port->lock, flags);
}
- return 0;
+ /*
+ * Call the API provided in serial_core.c file which handles
+ * the suspend.
+ */
+ return uart_suspend_port(&cdns_uart_uart_driver, port);
}
/**
@@ -1388,17 +1379,9 @@ static int cdns_uart_resume(struct device *device)
struct uart_port *port = dev_get_drvdata(device);
unsigned long flags = 0;
u32 ctrl_reg;
- struct tty_struct *tty;
- struct device *tty_dev;
- int may_wake = 0;
-
- /* Get the tty which could be NULL so don't assume it's valid */
- tty = tty_port_tty_get(&port->state->port);
- if (tty) {
- tty_dev = tty->dev;
- may_wake = device_may_wakeup(tty_dev);
- tty_kref_put(tty);
- }
+ int may_wake;
+
+ may_wake = device_may_wakeup(device);
if (console_suspend_enabled && !may_wake) {
struct cdns_uart *cdns_uart = port->private_data;