This is a note to let you know that I've just added the patch titled
tty: serial: owl: Fix missing clk_disable_unprepare() in owl_uart_probe
to the 5.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
tty-serial-owl-fix-missing-clk_disable_unprepare-in-.patch
and it can be found in the queue-5.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit c465df5f3d1481834ec426206c49b5061cc0f4c3
Author: Miaoqian Lin <linmq006@xxxxxxxxx>
Date: Mon Mar 7 10:51:35 2022 +0000
tty: serial: owl: Fix missing clk_disable_unprepare() in owl_uart_probe
[ 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@xxxxxxxxx>
Link: https://lore.kernel.org/r/20220307105135.11698-1-linmq006@xxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/tty/serial/owl-uart.c b/drivers/tty/serial/owl-uart.c
index 5250bd7d390a..0866d749a9f4 100644
--- a/drivers/tty/serial/owl-uart.c
+++ b/drivers/tty/serial/owl-uart.c
@@ -731,6 +731,7 @@ 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;
