diff options
| author | Mikko Perttunen <mperttunen@nvidia.com> | 2021-03-29 16:38:27 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-04-16 11:43:20 +0200 |
| commit | 9576dd89554e39f1c6dcb377ff2a961269d2eaac (patch) | |
| tree | c9def14e8e0752736e1beafe00355775cf9fbad2 /drivers | |
| parent | 39af2f472f21b4cdcfe9a7289856bec8b6498143 (diff) | |
gpu: host1x: Use different lock classes for each client
[ Upstream commit a24f98176d1efae2c37d3438c57a624d530d9c33 ]
To avoid false lockdep warnings, give each client lock a different
lock class, passed from the initialization site by macro.
Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/host1x/bus.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/gpu/host1x/bus.c b/drivers/gpu/host1x/bus.c index e201f62d62c0..9e2cb6968819 100644 --- a/drivers/gpu/host1x/bus.c +++ b/drivers/gpu/host1x/bus.c @@ -704,8 +704,9 @@ void host1x_driver_unregister(struct host1x_driver *driver) EXPORT_SYMBOL(host1x_driver_unregister); /** - * host1x_client_register() - register a host1x client + * __host1x_client_register() - register a host1x client * @client: host1x client + * @key: lock class key for the client-specific mutex * * Registers a host1x client with each host1x controller instance. Note that * each client will only match their parent host1x controller and will only be @@ -714,13 +715,14 @@ EXPORT_SYMBOL(host1x_driver_unregister); * device and call host1x_device_init(), which will in turn call each client's * &host1x_client_ops.init implementation. */ -int host1x_client_register(struct host1x_client *client) +int __host1x_client_register(struct host1x_client *client, + struct lock_class_key *key) { struct host1x *host1x; int err; INIT_LIST_HEAD(&client->list); - mutex_init(&client->lock); + __mutex_init(&client->lock, "host1x client lock", key); client->usecount = 0; mutex_lock(&devices_lock); @@ -741,7 +743,7 @@ int host1x_client_register(struct host1x_client *client) return 0; } -EXPORT_SYMBOL(host1x_client_register); +EXPORT_SYMBOL(__host1x_client_register); /** * host1x_client_unregister() - unregister a host1x client |