linux-kernel - [PATCH v1 1/1] serial: max310x: Unprepare and disable clock in error path

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Message-Id: <20210625153733.12911-1-andriy.shevchenko@linux.intel.com>
Date:   Fri, 25 Jun 2021 18:37:33 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Jiri Slaby <jirislaby@...nel.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Dan Carpenter <dan.carpenter@...cle.com>
Subject: [PATCH v1 1/1] serial: max310x: Unprepare and disable clock in error path

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@...cle.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/tty/serial/max310x.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c
index 0c1e4df52215..ef11860cd69e 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) {
-- 
2.30.2