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authorSebastian Reichel <sre@kernel.org>2014-03-29 01:54:25 +0400
committerSebastian Reichel <sre@kernel.org>2014-05-16 02:54:41 +0400
commit8491451024bcfabdcebd772ce9ec2fc5757acd42 (patch)
treeb8e73b934b21f47abacfd17fecc608dd2b140084
parenta088cf161cc87b39e83c7c53b9f239773422d212 (diff)
downloadlinux-8491451024bcfabdcebd772ce9ec2fc5757acd42.tar.xz
HSI: export method to (un)register clients
Expose method for registering and unregistering HSI clients, so that client drivers can register other client drivers. This is useful for HSI drivers, which want to use the functionality of other HSI drivers. For example the N900 modem driver can load HSI drivers for mcsaab protocol and speech protocol. Signed-off-by: Sebastian Reichel <sre@kernel.org> Reviewed-by: Pavel Machek <pavel@ucw.cz> Tested-By: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
-rw-r--r--drivers/hsi/hsi.c11
-rw-r--r--include/linux/hsi/hsi.h3
2 files changed, 11 insertions, 3 deletions
diff --git a/drivers/hsi/hsi.c b/drivers/hsi/hsi.c
index de2ad8f20d55..834a2d6b444e 100644
--- a/drivers/hsi/hsi.c
+++ b/drivers/hsi/hsi.c
@@ -69,14 +69,15 @@ static void hsi_client_release(struct device *dev)
kfree(cl);
}
-static void hsi_new_client(struct hsi_port *port, struct hsi_board_info *info)
+struct hsi_client *hsi_new_client(struct hsi_port *port,
+ struct hsi_board_info *info)
{
struct hsi_client *cl;
size_t size;
cl = kzalloc(sizeof(*cl), GFP_KERNEL);
if (!cl)
- return;
+ return NULL;
cl->tx_cfg = info->tx_cfg;
if (cl->tx_cfg.channels) {
@@ -103,7 +104,10 @@ static void hsi_new_client(struct hsi_port *port, struct hsi_board_info *info)
pr_err("hsi: failed to register client: %s\n", info->name);
put_device(&cl->device);
}
+
+ return cl;
}
+EXPORT_SYMBOL_GPL(hsi_new_client);
static void hsi_scan_board_info(struct hsi_controller *hsi)
{
@@ -119,12 +123,13 @@ static void hsi_scan_board_info(struct hsi_controller *hsi)
}
}
-static int hsi_remove_client(struct device *dev, void *data __maybe_unused)
+int hsi_remove_client(struct device *dev, void *data __maybe_unused)
{
device_unregister(dev);
return 0;
}
+EXPORT_SYMBOL_GPL(hsi_remove_client);
static int hsi_remove_port(struct device *dev, void *data __maybe_unused)
{
diff --git a/include/linux/hsi/hsi.h b/include/linux/hsi/hsi.h
index e3cff94bef04..e20a3999a696 100644
--- a/include/linux/hsi/hsi.h
+++ b/include/linux/hsi/hsi.h
@@ -296,6 +296,9 @@ struct hsi_controller *hsi_alloc_controller(unsigned int n_ports, gfp_t flags);
void hsi_put_controller(struct hsi_controller *hsi);
int hsi_register_controller(struct hsi_controller *hsi);
void hsi_unregister_controller(struct hsi_controller *hsi);
+struct hsi_client *hsi_new_client(struct hsi_port *port,
+ struct hsi_board_info *info);
+int hsi_remove_client(struct device *dev, void *data);
void hsi_port_unregister_clients(struct hsi_port *port);
static inline void hsi_controller_set_drvdata(struct hsi_controller *hsi,