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drm/client: Do not free client memory by default

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Make no assumption on the allocation of the client's memory. For
example, amdgpu stores a client within another data structures,
where it cannot be freed by itself.

The correct place to free the client's memory is the client's free
callback. All existing clients implement this.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://lore.kernel.org/r/20251009132006.45834-5-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2025-10-09 15:16:31 +02:00
parent 52a0233916
commit 57fe8285dc
1 changed files with 5 additions and 4 deletions
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9
drivers/gpu/drm/drm_client_event.c
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@ -39,12 +39,13 @@ void drm_client_dev_unregister(struct drm_device *dev)
mutex_lock(&dev->clientlist_mutex);
list_for_each_entry_safe(client, tmp, &dev->clientlist, list) {
list_del(&client->list);
if (client->funcs && client->funcs->unregister) {
/*
* Unregistering consumes and frees the client.
*/
if (client->funcs && client->funcs->unregister)
client->funcs->unregister(client);
} else {
else
drm_client_release(client);
kfree(client);
}
}
mutex_unlock(&dev->clientlist_mutex);
}