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829388b725
If KUnit is built as a module, and it's unloaded, the kunit_bus is not
unregistered. This causes an error if it's then re-loaded later, as we
try to re-register the bus.
Unregister the bus and root_device on shutdown, if it looks valid.
In addition, be more specific about the value of kunit_bus_device. It
is:
- a valid struct device* if the kunit_bus initialised correctly.
- an ERR_PTR if it failed to initialise.
- NULL before initialisation and after shutdown.
Fixes: d03c720e03 ("kunit: Add APIs for managing devices")
Signed-off-by: David Gow <davidgow@google.com>
Reviewed-by: Rae Moar <rmoar@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
20 lines
484 B
C
20 lines
484 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* KUnit internal header for device helpers
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*
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* Header for KUnit-internal driver / bus management.
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*
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* Copyright (C) 2023, Google LLC.
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* Author: David Gow <davidgow@google.com>
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*/
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#ifndef _KUNIT_DEVICE_IMPL_H
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#define _KUNIT_DEVICE_IMPL_H
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// For internal use only -- registers the kunit_bus.
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int kunit_bus_init(void);
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// For internal use only -- unregisters the kunit_bus.
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void kunit_bus_shutdown(void);
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#endif //_KUNIT_DEVICE_IMPL_H
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