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7fa530ad1b
The control bundle is going away so update the code. Also remove defensive WARN_ON which would not just warn if our implementation is broken, but also leak further memory unnecessarily. Signed-off-by: Johan Hovold <johan@hovoldconsulting.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
97 lines
2.5 KiB
C
97 lines
2.5 KiB
C
/*
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* Greybus CPort control protocol.
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*
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* Copyright 2015 Google Inc.
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* Copyright 2015 Linaro Ltd.
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*
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* Released under the GPLv2 only.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include "greybus.h"
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/* Get Manifest's size from the interface */
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int gb_control_get_manifest_size_operation(struct gb_interface *intf)
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{
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struct gb_control_get_manifest_size_response response;
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struct gb_connection *connection = intf->control->connection;
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int ret;
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ret = gb_operation_sync(connection, GB_CONTROL_TYPE_GET_MANIFEST_SIZE,
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NULL, 0, &response, sizeof(response));
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if (ret) {
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dev_err(&connection->intf->dev,
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"failed to get manifest size: %d\n", ret);
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return ret;
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}
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return le16_to_cpu(response.size);
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}
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/* Reads Manifest from the interface */
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int gb_control_get_manifest_operation(struct gb_interface *intf, void *manifest,
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size_t size)
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{
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struct gb_connection *connection = intf->control->connection;
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return gb_operation_sync(connection, GB_CONTROL_TYPE_GET_MANIFEST,
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NULL, 0, manifest, size);
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}
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int gb_control_connected_operation(struct gb_control *control, u16 cport_id)
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{
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struct gb_control_connected_request request;
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request.cport_id = cpu_to_le16(cport_id);
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return gb_operation_sync(control->connection, GB_CONTROL_TYPE_CONNECTED,
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&request, sizeof(request), NULL, 0);
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}
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int gb_control_disconnected_operation(struct gb_control *control, u16 cport_id)
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{
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struct gb_control_disconnected_request request;
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request.cport_id = cpu_to_le16(cport_id);
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return gb_operation_sync(control->connection,
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GB_CONTROL_TYPE_DISCONNECTED, &request,
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sizeof(request), NULL, 0);
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}
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static int gb_control_connection_init(struct gb_connection *connection)
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{
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struct gb_control *control;
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control = kzalloc(sizeof(*control), GFP_KERNEL);
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if (!control)
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return -ENOMEM;
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control->connection = connection;
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connection->private = control;
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/* Set interface's control connection */
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connection->intf->control = control;
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return 0;
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}
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static void gb_control_connection_exit(struct gb_connection *connection)
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{
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struct gb_control *control = connection->private;
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connection->intf->control = NULL;
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kfree(control);
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}
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static struct gb_protocol control_protocol = {
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.name = "control",
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.id = GREYBUS_PROTOCOL_CONTROL,
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.major = 0,
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.minor = 1,
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.connection_init = gb_control_connection_init,
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.connection_exit = gb_control_connection_exit,
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.flags = GB_PROTOCOL_SKIP_CONTROL_CONNECTED |
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GB_PROTOCOL_SKIP_CONTROL_DISCONNECTED,
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};
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gb_builtin_protocol_driver(control_protocol);
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