From time to time new bugs are popping up, causing some host1x client to
fail its initialization. Currently a single clients initialization failure causes whole host1x device registration to fail, as a result a single DRM sub-device initialization failure makes whole DRM initialization to fail. Let's ignore clients initialization failure, as a result display panel lights up even if some DRM clients (say GR2D or VIC) fail to initialize.
Signed-off-by: Dmitry Osipenko digetx@gmail.com --- drivers/gpu/host1x/bus.c | 18 +++++++----------- 1 file changed, 7 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/host1x/bus.c b/drivers/gpu/host1x/bus.c index 815bdb42e3f0..145019e105e4 100644 --- a/drivers/gpu/host1x/bus.c +++ b/drivers/gpu/host1x/bus.c @@ -199,34 +199,30 @@ static void host1x_subdev_unregister(struct host1x_device *device, */ int host1x_device_init(struct host1x_device *device) { - struct host1x_client *client; + struct host1x_client *client, *cl; int err;
+ mutex_lock(&clients_lock); mutex_lock(&device->clients_lock);
- list_for_each_entry(client, &device->clients, list) { + list_for_each_entry_safe(client, cl, &device->clients, list) { if (client->ops && client->ops->init) { err = client->ops->init(client); if (err < 0) { dev_err(&device->dev, "failed to initialize %s: %d\n", dev_name(client->dev), err); - goto teardown; + + /* add the client to the list of idle clients */ + list_add_tail(&client->list, &clients); } } }
mutex_unlock(&device->clients_lock); + mutex_unlock(&clients_lock);
return 0; - -teardown: - list_for_each_entry_continue_reverse(client, &device->clients, list) - if (client->ops->exit) - client->ops->exit(client); - - mutex_unlock(&device->clients_lock); - return err; } EXPORT_SYMBOL(host1x_device_init);