This is a note to let you know that I've just added the patch titled
serial: max310x: Unprepare and disable clock in error path
to the 5.4-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:
serial-max310x-unprepare-and-disable-clock-in-error-.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 540ef3422d7c8b78f5c8f628e07ea8d0fc2687ac
Author: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Date: Fri Jun 25 18:37:33 2021 +0300
serial: max310x: Unprepare and disable clock in error path
[ Upstream commit 61acabaae5ba58b3c32e6e90d24c2c0827fd27a8 ]
In one error case the clock may be left prepared and enabled.
Unprepare and disable clock in that case to balance state of
the hardware.
Fixes: d4d6f03c4fb3 ("serial: max310x: Try to get crystal clock rate from property")
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20210625153733.12911-1-andriy.shevchenko@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c
index 978d9d93127e5..a09ec46e0310d 100644
--- a/drivers/tty/serial/max310x.c
+++ b/drivers/tty/serial/max310x.c
@@ -1293,7 +1293,8 @@ static int max310x_probe(struct device *dev, const struct max310x_devtype *devty
freq = uartclk;
if (freq == 0) {
dev_err(dev, "Cannot get clock rate\n");
- return -EINVAL;
+ ret = -EINVAL;
+ goto out_clk;
}
if (xtal) {
