Mandatorily disabling the uart clock will cause register access
hung on "no_console_suspend". This patch add condition check on
it and only disable the clock with console_suspend_enabled true.
Signed-off-by: Joseph Lo <josephl@xxxxxxxxxx>
Signed-off-by: Jingchang Lu <jingchang.lu@xxxxxxxxxxxxx>
---
drivers/tty/serial/of_serial.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/serial/of_serial.c b/drivers/tty/serial/of_serial.c
index 8bc2563..a765399 100644
--- a/drivers/tty/serial/of_serial.c
+++ b/drivers/tty/serial/of_serial.c
@@ -246,7 +246,7 @@ static int of_serial_suspend(struct device *dev)
struct of_serial_info *info = dev_get_drvdata(dev);
serial8250_suspend_port(info->line);
- if (info->clk)
+ if (info->clk && console_suspend_enabled)
clk_disable_unprepare(info->clk);
return 0;
@@ -256,7 +256,7 @@ static int of_serial_resume(struct device *dev)
{
struct of_serial_info *info = dev_get_drvdata(dev);
- if (info->clk)
+ if (info->clk && console_suspend_enabled)
clk_prepare_enable(info->clk);
serial8250_resume_port(info->line);
--
1.8.0
--
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