linux-kernel - [PATCH] platform/chrome: cros_usbpd_notify: Add check for platform_driver

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Message-Id: <20220913090340.1738370-1-jiasheng@iscas.ac.cn>
Date:   Tue, 13 Sep 2022 17:03:40 +0800
From:   Jiasheng Jiang <jiasheng@...as.ac.cn>
To:     pmalani@...omium.org, bleung@...omium.org
Cc:     chrome-platform@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Jiasheng Jiang <jiasheng@...as.ac.cn>
Subject: [PATCH] platform/chrome: cros_usbpd_notify: Add check for platform_driver_register

As platform_driver_register() can return error numbers,
it should be better to check platform_driver_register()
and deal with the exception.

Fixes: ec2daf6e33f9 ("platform: chrome: Add cros-usbpd-notify driver")
Signed-off-by: Jiasheng Jiang <jiasheng@...as.ac.cn>
---
 drivers/platform/chrome/cros_usbpd_notify.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/chrome/cros_usbpd_notify.c b/drivers/platform/chrome/cros_usbpd_notify.c
index 4b5a81c9dc6d..baa72ad73c68 100644
--- a/drivers/platform/chrome/cros_usbpd_notify.c
+++ b/drivers/platform/chrome/cros_usbpd_notify.c
@@ -239,7 +239,11 @@ static int __init cros_usbpd_notify_init(void)
 		return ret;
 
 #ifdef CONFIG_ACPI
-	platform_driver_register(&cros_usbpd_notify_acpi_driver);
+	ret = platform_driver_register(&cros_usbpd_notify_acpi_driver);
+	if (ret < 0) {
+		platform_driver_unregister(&cros_usbpd_notify_plat_driver);
+		return ret;
+	}
 #endif
 	return 0;
 }
-- 
2.25.1