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powerpc/pseries: fix possible memory leak in ibmebus_bus_init()

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If device_register() returns error in ibmebus_bus_init(), name of kobject
which is allocated in dev_set_name() called in device_add() is leaked.

As comment of device_add() says, it should call put_device() to drop
the reference count that was set in device_initialize() when it fails,
so the name can be freed in kobject_cleanup().

Signed-off-by: ruanjinjie <ruanjinjie@huawei.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20221110011929.3709774-1-ruanjinjie@huawei.com
This commit is contained in:
ruanjinjie 2022-11-10 09:19:29 +08:00 committed by Michael Ellerman
parent efa1f85019
commit afda85b963
1 changed files with 1 additions and 0 deletions
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arch/powerpc/platforms/pseries/ibmebus.c
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@ -461,6 +461,7 @@ static int __init ibmebus_bus_init(void)
if (err) {
printk(KERN_WARNING "%s: device_register returned %i\n",
__func__, err);
put_device(&ibmebus_bus_device);
bus_unregister(&ibmebus_bus_type);
return err;