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Subject[PATCH 4.14 033/164] firmware: vpd: Fix platform driver and device registration/unregistration
Date
4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Guenter Roeck <linux@roeck-us.net>

commit 0631fb8b027f5968c2f5031f0b3ff7be3e4bebcc upstream.

The driver exit function needs to unregister both platform device and
driver. Also, during registration, register driver first and perform
error checks.

Fixes: 049a59db34eb ("firmware: Google VPD sysfs driver")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/firmware/google/vpd.c | 20 ++++++++++++++------
1 file changed, 14 insertions(+), 6 deletions(-)

--- a/drivers/firmware/google/vpd.c
+++ b/drivers/firmware/google/vpd.c
@@ -326,21 +326,29 @@ static struct platform_driver vpd_driver
},
};

+static struct platform_device *vpd_pdev;
+
static int __init vpd_platform_init(void)
{
- struct platform_device *pdev;
-
- pdev = platform_device_register_simple("vpd", -1, NULL, 0);
- if (IS_ERR(pdev))
- return PTR_ERR(pdev);
+ int ret;

- platform_driver_register(&vpd_driver);
+ ret = platform_driver_register(&vpd_driver);
+ if (ret)
+ return ret;
+
+ vpd_pdev = platform_device_register_simple("vpd", -1, NULL, 0);
+ if (IS_ERR(vpd_pdev)) {
+ platform_driver_unregister(&vpd_driver);
+ return PTR_ERR(vpd_pdev);
+ }

return 0;
}

static void __exit vpd_platform_exit(void)
{
+ platform_device_unregister(vpd_pdev);
+ platform_driver_unregister(&vpd_driver);
}

module_init(vpd_platform_init);

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