linux-kernel - [PATCH v2 1/7] pps: clients: gpio: Bail out on error when requesting GPIO echo line

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20210318130321.24227-1-andriy.shevchenko@linux.intel.com>
Date:   Thu, 18 Mar 2021 15:03:15 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Rodolfo Giometti <giometti@...eenne.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-kernel@...r.kernel.org
Cc:     Ryan Govostes <rgovostes@...i.edu>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH v2 1/7] pps: clients: gpio: Bail out on error when requesting GPIO echo line

When requesting optional GPIO echo line, bail out on error,
so user will know that something wrong with the existing property.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Acked-by: Rodolfo Giometti <giometti@...eenne.com>
---
 drivers/pps/clients/pps-gpio.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/pps/clients/pps-gpio.c b/drivers/pps/clients/pps-gpio.c
index e0de1df2ede0..f89c31aa66f1 100644
--- a/drivers/pps/clients/pps-gpio.c
+++ b/drivers/pps/clients/pps-gpio.c
@@ -119,12 +119,12 @@ static int pps_gpio_setup(struct platform_device *pdev)
 	data->echo_pin = devm_gpiod_get_optional(&pdev->dev,
 			"echo",
 			GPIOD_OUT_LOW);
-	if (data->echo_pin) {
-		if (IS_ERR(data->echo_pin)) {
-			dev_err(&pdev->dev, "failed to request ECHO GPIO\n");
-			return PTR_ERR(data->echo_pin);
-		}
+	if (IS_ERR(data->echo_pin)) {
+		dev_err(&pdev->dev, "failed to request ECHO GPIO\n");
+		return PTR_ERR(data->echo_pin);
+	}
 
+	if (data->echo_pin) {
 		ret = of_property_read_u32(np,
 			"echo-active-ms",
 			&value);
-- 
2.30.2