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firmware: vpd: Tie firmware kobject to device lifetime

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It doesn't make sense to have /sys/firmware/vpd if the device is not
instantiated, so tie its lifetime to the device.

Fixes: 049a59db34 ("firmware: Google VPD sysfs driver")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Guenter Roeck 2017-11-15 13:00:44 -08:00 committed by Greg Kroah-Hartman
parent 811d7e0215
commit e4b28b3c3a
1 changed files with 13 additions and 6 deletions
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19
drivers/firmware/google/vpd.c
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@ -295,7 +295,17 @@ static int vpd_probe(struct platform_device *pdev)
if (ret)
return ret;
return vpd_sections_init(entry.cbmem_addr);
vpd_kobj = kobject_create_and_add("vpd", firmware_kobj);
if (!vpd_kobj)
return -ENOMEM;
ret = vpd_sections_init(entry.cbmem_addr);
if (ret) {
kobject_put(vpd_kobj);
return ret;
}
return 0;
}
static int vpd_remove(struct platform_device *pdev)
@ -303,6 +313,8 @@ static int vpd_remove(struct platform_device *pdev)
vpd_section_destroy(&ro_vpd);
vpd_section_destroy(&rw_vpd);
kobject_put(vpd_kobj);
return 0;
}
@ -322,10 +334,6 @@ static int __init vpd_platform_init(void)
if (IS_ERR(pdev))
return PTR_ERR(pdev);
vpd_kobj = kobject_create_and_add("vpd", firmware_kobj);
if (!vpd_kobj)
return -ENOMEM;
platform_driver_register(&vpd_driver);
return 0;
@ -333,7 +341,6 @@ static int __init vpd_platform_init(void)
static void __exit vpd_platform_exit(void)
{
kobject_put(vpd_kobj);
}
module_init(vpd_platform_init);