linux-kernel - [PATCH 5.18 289/339] platform/x86: barco-p50-gpio: Add check for platform_driver

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Message-Id: <20220613094935.399154218@linuxfoundation.org>
Date:   Mon, 13 Jun 2022 12:11:54 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jiasheng Jiang <jiasheng@...as.ac.cn>,
        Peter Korsgaard <peter.korsgaard@...co.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.18 289/339] platform/x86: barco-p50-gpio: Add check for platform_driver_register

From: Jiasheng Jiang <jiasheng@...as.ac.cn>

[ Upstream commit 011881b80ebe773914b59905bce0f5e0ef93e7ba ]

As platform_driver_register() could fail, it should be better
to deal with the return value in order to maintain the code
consisitency.

Fixes: 86af1d02d458 ("platform/x86: Support for EC-connected GPIOs for identify LED/button on Barco P50 board")
Signed-off-by: Jiasheng Jiang <jiasheng@...as.ac.cn>
Acked-by: Peter Korsgaard <peter.korsgaard@...co.com>
Link: https://lore.kernel.org/r/20220526090345.1444172-1-jiasheng@iscas.ac.cn
Signed-off-by: Hans de Goede <hdegoede@...hat.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/platform/x86/barco-p50-gpio.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/x86/barco-p50-gpio.c b/drivers/platform/x86/barco-p50-gpio.c
index 05534287bc26..8dd672339485 100644
--- a/drivers/platform/x86/barco-p50-gpio.c
+++ b/drivers/platform/x86/barco-p50-gpio.c
@@ -405,11 +405,14 @@ MODULE_DEVICE_TABLE(dmi, dmi_ids);
 static int __init p50_module_init(void)
 {
 	struct resource res = DEFINE_RES_IO(P50_GPIO_IO_PORT_BASE, P50_PORT_CMD + 1);
+	int ret;
 
 	if (!dmi_first_match(dmi_ids))
 		return -ENODEV;
 
-	platform_driver_register(&p50_gpio_driver);
+	ret = platform_driver_register(&p50_gpio_driver);
+	if (ret)
+		return ret;
 
 	gpio_pdev = platform_device_register_simple(DRIVER_NAME, PLATFORM_DEVID_NONE, &res, 1);
 	if (IS_ERR(gpio_pdev)) {
-- 
2.35.1