[PATCH v7 3/4] i2c: i2c-core-of: Convert i2c_of_match_device_sysfs() to non-static

[Biju Das <biju.das.jz@bp.renesas.com>]

Currently i2c_of_match_device_sysfs() is used by i2c_of_match_device().
Convert this to non-static function for finding match data for the I2C
sysfs interface using i2c_device_get_match_data() for code reuse.

While at it, fix the below issues:
 1) Replace 'of_device_id*'->'of_device_id *' in function definition.
 2) Fix the alignment in the function definition.
 3) Change the struct i2c_client parameter as const to avoid overriding
    the client pointer.

Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Suggested-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
v6->v7:
 * Moved from patch#2 to patch#3.
v5->v6:
 * Added Rb tag from Andy.
 * Moved to patch#2
v5:
 * Split from patch #3
 * Removed export symbol
---
 drivers/i2c/i2c-core-of.c | 4 ++--
 drivers/i2c/i2c-core.h    | 9 +++++++++
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/drivers/i2c/i2c-core-of.c b/drivers/i2c/i2c-core-of.c
index a6c407d36800..33832622f436 100644
--- a/drivers/i2c/i2c-core-of.c
+++ b/drivers/i2c/i2c-core-of.c
@@ -113,9 +113,9 @@ void of_i2c_register_devices(struct i2c_adapter *adap)
 	of_node_put(bus);
 }
 
-static const struct of_device_id*
+const struct of_device_id *
 i2c_of_match_device_sysfs(const struct of_device_id *matches,
-				  struct i2c_client *client)
+			  const struct i2c_client *client)
 {
 	const char *name;
 
diff --git a/drivers/i2c/i2c-core.h b/drivers/i2c/i2c-core.h
index 1247e6e6e975..e4d397b67989 100644
--- a/drivers/i2c/i2c-core.h
+++ b/drivers/i2c/i2c-core.h
@@ -82,8 +82,17 @@ static inline void i2c_acpi_remove_space_handler(struct i2c_adapter *adapter) {
 
 #ifdef CONFIG_OF
 void of_i2c_register_devices(struct i2c_adapter *adap);
+const struct of_device_id *
+i2c_of_match_device_sysfs(const struct of_device_id *matches,
+			  const struct i2c_client *client);
 #else
 static inline void of_i2c_register_devices(struct i2c_adapter *adap) { }
+static inline const struct of_device_id *
+i2c_of_match_device_sysfs(const struct of_device_id *matches,
+			  const struct i2c_client *client)
+{
+	return NULL;
+}
 #endif
 extern struct notifier_block i2c_of_notifier;
 
-- 
2.25.1