linux-kernel - [PATCH V2 7/8] tty: serial: qcom_geni_serial: Unconditionally call dev_pm_opp_of_remove

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Message-Id: <583003f385a103b4c089ce8144a215c58cfb117a.1598594714.git.viresh.kumar@linaro.org>
Date:   Fri, 28 Aug 2020 11:37:52 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     rnayak@...eaurora.org, Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>
Cc:     Viresh Kumar <viresh.kumar@...aro.org>, linux-pm@...r.kernel.org,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Rafael Wysocki <rjw@...ysocki.net>,
        Stephen Boyd <sboyd@...nel.org>, Nishanth Menon <nm@...com>,
        Douglas Anderson <dianders@...omium.org>,
        Naresh Kamboju <naresh.kamboju@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-serial@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH V2 7/8] tty: serial: qcom_geni_serial: Unconditionally call dev_pm_opp_of_remove_table()

dev_pm_opp_of_remove_table() doesn't report any errors when it fails to
find the OPP table with error -ENODEV (i.e. OPP table not present for
the device). And we can call dev_pm_opp_of_remove_table()
unconditionally here.

While at it, create a new label to put clkname on errors.

Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>

---
V2:
- Compare with -ENODEV only for failures.
- Create new label to put clkname.
---
 drivers/tty/serial/qcom_geni_serial.c | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c
index 3aa29d201f54..33f1af6c61d1 100644
--- a/drivers/tty/serial/qcom_geni_serial.c
+++ b/drivers/tty/serial/qcom_geni_serial.c
@@ -1433,11 +1433,9 @@ static int qcom_geni_serial_probe(struct platform_device *pdev)
 		return PTR_ERR(port->se.opp_table);
 	/* OPP table is optional */
 	ret = dev_pm_opp_of_add_table(&pdev->dev);
-	if (!ret) {
-		port->se.has_opp_table = true;
-	} else if (ret != -ENODEV) {
+	if (ret && ret != -ENODEV) {
 		dev_err(&pdev->dev, "invalid OPP table in device tree\n");
-		return ret;
+		goto put_clkname;
 	}
 
 	port->private_data.drv = drv;
@@ -1478,8 +1476,8 @@ static int qcom_geni_serial_probe(struct platform_device *pdev)
 
 	return 0;
 err:
-	if (port->se.has_opp_table)
-		dev_pm_opp_of_remove_table(&pdev->dev);
+	dev_pm_opp_of_remove_table(&pdev->dev);
+put_clkname:
 	dev_pm_opp_put_clkname(port->se.opp_table);
 	return ret;
 }
@@ -1489,8 +1487,7 @@ static int qcom_geni_serial_remove(struct platform_device *pdev)
 	struct qcom_geni_serial_port *port = platform_get_drvdata(pdev);
 	struct uart_driver *drv = port->private_data.drv;
 
-	if (port->se.has_opp_table)
-		dev_pm_opp_of_remove_table(&pdev->dev);
+	dev_pm_opp_of_remove_table(&pdev->dev);
 	dev_pm_opp_put_clkname(port->se.opp_table);
 	dev_pm_clear_wake_irq(&pdev->dev);
 	device_init_wakeup(&pdev->dev, false);
-- 
2.25.0.rc1.19.g042ed3e048af