This is a simple flag that gets set across prepare and complete
callbacks in the suspend path. We the flag we may avoid
runtime pm idling at the same time.
Cc: Fabio Stevam <festevam@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Jiri Slaby <jslaby@xxxxxxxx>
Cc: linux-serial@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Signed-off-by: Eduardo Valentin <edubezval@xxxxxxxxx>
---
drivers/tty/serial/imx.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 494b182..def52e0 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -219,6 +219,8 @@ struct imx_port {
wait_queue_head_t dma_wait;
unsigned int saved_reg[8];
bool context_saved;
+
+ bool is_suspending;
};
struct imx_port_ucrs {
@@ -1805,6 +1807,22 @@ static struct uart_driver imx_reg = {
.cons = IMX_CONSOLE,
};
+static int serial_imx_prepare(struct device *dev)
+{
+ struct imx_port *sport = dev_get_drvdata(dev);
+
+ sport->is_suspending = true;
+
+ return 0;
+}
+
+static void serial_imx_complete(struct device *dev)
+{
+ struct imx_port *sport = dev_get_drvdata(dev);
+
+ sport->is_suspending = false;
+}
+
static void serial_imx_restore_context(struct imx_port *sport)
{
if (!sport->context_saved)
@@ -2033,6 +2051,8 @@ static int serial_imx_remove(struct platform_device *pdev)
static const struct dev_pm_ops serial_imx_dev_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(serial_imx_suspend, serial_imx_resume)
+ .prepare = serial_imx_prepare,
+ .complete = serial_imx_complete,
};
static struct platform_driver serial_imx_driver = {
--
2.5.0
--
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