[PATCH 5.4 285/411] tty: serial: owl: Fix missing clk_disable_unprepare() in owl_uart_probe

Greg Kroah-Hartman
2022-06-13T11:36:07Z

From: Miaoqian Lin <linmq006@gmail.com>

[ Upstream commit bcea0f547ec1a2ee44d429aaf0334633e386e67c ]

Fix the missing clk_disable_unprepare() before return
from owl_uart_probe() in the error handling case.

Fixes: abf42d2f333b ("tty: serial: owl: add "much needed" clk_prepare_enable()")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Link: https://lore.kernel.org/r/20220307105135.11698-1-linmq006@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/tty/serial/owl-uart.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/tty/serial/owl-uart.c b/drivers/tty/serial/owl-uart.c
index c55c8507713c..e87953f8a768 100644
--- a/drivers/tty/serial/owl-uart.c
+++ b/drivers/tty/serial/owl-uart.c
@@ -695,6 +695,7 @@ static int owl_uart_probe(struct platform_device *pdev)
owl_port->port.uartclk = clk_get_rate(owl_port->clk);
if (owl_port->port.uartclk == 0) {
dev_err(&pdev->dev, "clock rate is zero\n");
+ clk_disable_unprepare(owl_port->clk);
return -EINVAL;
}
owl_port->port.flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP | UPF_LOW_LATENCY;
--
2.35.1