[PATCH 1/8] i2c: export i2c_client_type structure

Dmitry Torokhov
2017-03-09T22:17:08Z

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.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---

Wolfram, this is the patch I was talking about in the other mail.

drivers/i2c/i2c-core.c | 4 ++--
include/linux/i2c.h | 1 +
2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index 34a5115484dd..446e341e9508 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;
@@ -1096,11 +1095,12 @@ 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 2cc3988d127b..89ca5e56b433 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -37,6 +37,7 @@

extern struct bus_type i2c_bus_type;
extern struct device_type i2c_adapter_type;
+extern struct device_type i2c_client_type;

/* --- General options ------------------------------------------------ */

--
2.12.0.246.ga2ecc84866-goog