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greybus: connection: refactor connection enable and disable

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Refactor connection enable and disable.

This is a step towards removing the legacy-protocol handling from core.

Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Johan Hovold 2016-01-08 20:13:46 +01:00 committed by Greg Kroah-Hartman
parent 4d0bee1125
commit 3ea6a81568
1 changed files with 46 additions and 25 deletions
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71
drivers/staging/greybus/connection.c
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@ -387,17 +387,13 @@ static int gb_connection_protocol_get_version(struct gb_connection *connection)
return 0;
}
int gb_connection_init(struct gb_connection *connection)
int gb_connection_enable(struct gb_connection *connection)
{
int ret;
ret = gb_connection_bind_protocol(connection);
if (ret)
return ret;
ret = gb_connection_hd_cport_enable(connection);
if (ret)
goto err_unbind_protocol;
return ret;
ret = gb_connection_svc_connection_create(connection);
if (ret)
@ -411,26 +407,58 @@ int gb_connection_init(struct gb_connection *connection)
if (ret)
goto err_svc_destroy;
ret = gb_connection_protocol_get_version(connection);
if (ret)
goto err_disconnect;
ret = connection->protocol->connection_init(connection);
if (ret)
goto err_disconnect;
return 0;
err_disconnect:
err_svc_destroy:
spin_lock_irq(&connection->lock);
connection->state = GB_CONNECTION_STATE_DISABLED;
spin_unlock_irq(&connection->lock);
gb_connection_svc_connection_destroy(connection);
err_hd_cport_disable:
gb_connection_hd_cport_disable(connection);
return ret;
}
EXPORT_SYMBOL_GPL(gb_connection_enable);
void gb_connection_disable(struct gb_connection *connection)
{
gb_connection_control_disconnected(connection);
spin_lock_irq(&connection->lock);
connection->state = GB_CONNECTION_STATE_DISABLED;
spin_unlock_irq(&connection->lock);
err_svc_destroy:
gb_connection_svc_connection_destroy(connection);
err_hd_cport_disable:
gb_connection_hd_cport_disable(connection);
}
EXPORT_SYMBOL_GPL(gb_connection_disable);
int gb_connection_init(struct gb_connection *connection)
{
int ret;
ret = gb_connection_bind_protocol(connection);
if (ret)
return ret;
ret = gb_connection_enable(connection);
if (ret)
goto err_unbind_protocol;
ret = gb_connection_protocol_get_version(connection);
if (ret)
goto err_disable;
ret = connection->protocol->connection_init(connection);
if (ret)
goto err_disable;
return 0;
err_disable:
gb_connection_disable(connection);
err_unbind_protocol:
gb_connection_unbind_protocol(connection);
@ -448,17 +476,10 @@ void gb_connection_exit(struct gb_connection *connection)
spin_unlock_irq(&connection->lock);
gb_connection_cancel_operations(connection, -ESHUTDOWN);
connection->protocol->connection_exit(connection);
gb_connection_control_disconnected(connection);
gb_connection_disable(connection);
spin_lock_irq(&connection->lock);
connection->state = GB_CONNECTION_STATE_DISABLED;
spin_unlock_irq(&connection->lock);
gb_connection_svc_connection_destroy(connection);
gb_connection_hd_cport_disable(connection);
gb_connection_unbind_protocol(connection);
}