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greybus: connection: Create gb_connection_create_range() to specify hd-cport-id range

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We need to allocate specific hd-cport-id for AP's control/svc protocols.
Support that by splitting functionality of gb_connection_create() into a
new routine, which takes range of hd_cport_id's to allocate from.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Viresh Kumar 2015-07-21 17:44:15 +05:30 committed by Greg Kroah-Hartman
parent e602df6588
commit 007f979216
2 changed files with 14 additions and 3 deletions
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14
drivers/staging/greybus/connection.c
View file

@ -141,8 +141,9 @@ void gb_connection_bind_protocol(struct gb_connection *connection)
* Returns a pointer to the new connection if successful, or a null
* pointer otherwise.
*/
struct gb_connection *gb_connection_create(struct gb_bundle *bundle,
u16 cport_id, u8 protocol_id)
struct gb_connection *
gb_connection_create_range(struct gb_bundle *bundle, u16 cport_id,
u8 protocol_id, u32 ida_start, u32 ida_end)
{
struct gb_connection *connection;
struct greybus_host_device *hd = bundle->intf->hd;
@ -165,7 +166,7 @@ struct gb_connection *gb_connection_create(struct gb_bundle *bundle,
if (!connection)
return NULL;
retval = ida_simple_get(id_map, 0, CPORT_ID_MAX, GFP_KERNEL);
retval = ida_simple_get(id_map, ida_start, ida_end, GFP_KERNEL);
if (retval < 0) {
kfree(connection);
return NULL;
@ -221,6 +222,13 @@ struct gb_connection *gb_connection_create(struct gb_bundle *bundle,
return connection;
}
struct gb_connection *gb_connection_create(struct gb_bundle *bundle,
u16 cport_id, u8 protocol_id)
{
return gb_connection_create_range(bundle, cport_id, protocol_id, 0,
CPORT_ID_MAX);
}
/*
* Cancel all active operations on a connection.
*

3
drivers/staging/greybus/connection.h
View file

@ -47,6 +47,9 @@ struct gb_connection {
struct gb_connection *gb_connection_create(struct gb_bundle *bundle,
u16 cport_id, u8 protocol_id);
struct gb_connection *gb_connection_create_range(struct gb_bundle *bundle,
u16 cport_id, u8 protocol_id, u32 ida_start,
u32 ida_end);
void gb_connection_destroy(struct gb_connection *connection);
int gb_connection_init(struct gb_connection *connection);