Check the return value of clk_prepare_enable() which could fail when
cannot enable the clock.
Signed-off-by: Li Zhong <floridsleeves@xxxxxxxxx>
---
drivers/tty/serial/8250/8250_of.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/tty/serial/8250/8250_of.c b/drivers/tty/serial/8250/8250_of.c
index 1b461fba15a3..23e9b9e8c940 100644
--- a/drivers/tty/serial/8250/8250_of.c
+++ b/drivers/tty/serial/8250/8250_of.c
@@ -298,7 +298,8 @@ static int of_serial_resume(struct device *dev)
if (!uart_console(port) || console_suspend_enabled) {
pm_runtime_get_sync(dev);
- clk_prepare_enable(info->clk);
+ if (clk_prepare_enable(info->clk) < 0)
+ dev_warn(dev, "can't enable clk.\n");
}
serial8250_resume_port(info->line);
--
2.25.1
