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authorDmitry Torokhov <dmitry.torokhov@gmail.com>2017-03-04 11:29:34 -0800
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2017-04-01 09:35:08 -0700
commit00a06c22e9fc0a33ae0b6ca2d47938340dbcd539 (patch)
treee2c57b41f8dda1cf47ad3759ff5e070f96f46c5d
parent97da3854c526d3a6ee05c849c96e48d21527606c (diff)
i2c: export i2c_client_type structure
i2c bus has 2 different types of device belonging to the same bus and bus notifiers use device type to distinguish between adapters and clients. Previously we only had i2c_adapter_type exported, which made code wanting to work with i2c_client devices test for type not equal to adapter type. This unfortunately is not safe if we ever add another type to the bus, so let's export i2c_client_type as well. Reviewed-by: Jean Delvare <jdelvare@suse.de> Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Reviewed-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
-rw-r--r--drivers/i2c/i2c-core.c4
-rw-r--r--include/linux/i2c.h1
2 files changed, 3 insertions, 2 deletions
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index d2402bbf6729..bf7892e3b0c8 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -74,7 +74,6 @@
static DEFINE_MUTEX(core_lock);
static DEFINE_IDR(i2c_adapter_idr);
-static struct device_type i2c_client_type;
static int i2c_detect(struct i2c_adapter *adapter, struct i2c_driver *driver);
static struct static_key i2c_trace_msg = STATIC_KEY_INIT_FALSE;
@@ -1097,11 +1096,12 @@ struct bus_type i2c_bus_type = {
};
EXPORT_SYMBOL_GPL(i2c_bus_type);
-static struct device_type i2c_client_type = {
+struct device_type i2c_client_type = {
.groups = i2c_dev_groups,
.uevent = i2c_device_uevent,
.release = i2c_client_dev_release,
};
+EXPORT_SYMBOL_GPL(i2c_client_type);
/**
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 6b183521c616..6366989d1001 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -38,6 +38,7 @@
extern struct bus_type i2c_bus_type;
extern struct device_type i2c_adapter_type;
+extern struct device_type i2c_client_type;
/* --- General options ------------------------------------------------ */