static int agp_remove_client(pid_t id)
{
struct agp_client *client;
struct agp_client *prev_client;
struct agp_client *next_client;
struct agp_controller *controller;
controller = agp_find_controller_for_client(id);
if (controller == NULL)
return -EINVAL;
client = agp_find_client_in_controller(controller, id);
if (client == NULL)
return -EINVAL;
prev_client = client->prev;
next_client = client->next;
if (prev_client != NULL) {
prev_client->next = next_client;
if (next_client != NULL)
next_client->prev = prev_client;
} else {
if (next_client != NULL)
next_client->prev = NULL;
controller->clients = next_client;
}
controller->num_clients--;
agp_remove_seg_from_client(client);
kfree(client);
return 0;
}
static void agp_add_seg_to_client(agp_client * client,
agp_segment_priv ** seg, int num_segments)
{
agp_segment_priv **prev_seg;
prev_seg = client->segments;
if (prev_seg != NULL) {
agp_remove_seg_from_client(client);
}
client->num_segments = num_segments;
client->segments = seg;
}
static void agp_add_seg_to_client(struct agp_client *client,
struct agp_segment_priv ** seg, int num_segments)
{
struct agp_segment_priv **prev_seg;
prev_seg = client->segments;
if (prev_seg != NULL)
agp_remove_seg_from_client(client);
DBG("Adding seg %p (%d segments) to client %p", seg, num_segments, client);
client->num_segments = num_segments;
client->segments = seg;
}
static void agp_remove_all_clients(struct agp_controller *controller)
{
struct agp_client *client;
struct agp_client *temp;
client = controller->clients;
while (client) {
struct agp_file_private *priv;
temp = client;
agp_remove_seg_from_client(temp);
priv = agp_find_private(temp->pid);
if (priv != NULL) {
clear_bit(AGP_FF_IS_VALID, &priv->access_flags);
clear_bit(AGP_FF_IS_CLIENT, &priv->access_flags);
}
client = client->next;
kfree(temp);
}
}