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greybus: connection: add name field

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Add a name field to connections that can be used in log messages.

A connection always belongs to a host-device (bus) and can be uniquely
identified by its host-device cport id, but include remote interface and
cport id nonetheless on the following format:

	<hd_cport_id>/<intf_id>:<cport_id>

The remote interface and cport id will be zero for static connections.

Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Johan Hovold 2015-11-25 15:59:14 +01:00 committed by Greg Kroah-Hartman
parent 4ec1574ae9
commit 729b260a67
2 changed files with 18 additions and 0 deletions
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17
drivers/staging/greybus/connection.c
View File

@ -95,6 +95,21 @@ int svc_update_connection(struct gb_interface *intf,
return 0;
}
static void gb_connection_init_name(struct gb_connection *connection)
{
u16 hd_cport_id = connection->hd_cport_id;
u16 cport_id = 0;
u8 intf_id = 0;
if (connection->intf) {
intf_id = connection->intf->interface_id;
cport_id = connection->intf_cport_id;
}
snprintf(connection->name, sizeof(connection->name),
"%hu/%hhu:%hu", hd_cport_id, intf_id, cport_id);
}
/*
* gb_connection_create() - create a Greybus connection
* @hd: host device of the connection
@ -179,6 +194,8 @@ gb_connection_create(struct gb_host_device *hd, int hd_cport_id,
kref_init(&connection->kref);
gb_connection_init_name(connection);
spin_lock_irq(&gb_connections_lock);
list_add(&connection->hd_links, &hd->connections);

1
drivers/staging/greybus/connection.h
View File

@ -43,6 +43,7 @@ struct gb_connection {
enum gb_connection_state state;
struct list_head operations;
char name[16];
struct workqueue_struct *wq;
atomic_t op_cycle;