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path: root/drivers/dio/dio-driver.c
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Diffstat (limited to 'drivers/dio/dio-driver.c')
-rw-r--r--drivers/dio/dio-driver.c9
1 files changed, 4 insertions, 5 deletions
diff --git a/drivers/dio/dio-driver.c b/drivers/dio/dio-driver.c
index a7b174ef4c85..69c46935ffc7 100644
--- a/drivers/dio/dio-driver.c
+++ b/drivers/dio/dio-driver.c
@@ -25,7 +25,7 @@
* dio_device_id structure or %NULL if there is no match.
*/
-const struct dio_device_id *
+static const struct dio_device_id *
dio_match_device(const struct dio_device_id *ids,
const struct dio_dev *d)
{
@@ -105,9 +105,9 @@ void dio_unregister_driver(struct dio_driver *drv)
* @dev: the DIO device structure to match against
* @drv: the &device_driver that points to the array of DIO device id structures to search
*
- * Used by a driver to check whether a DIO device present in the
- * system is in its list of supported devices. Returns the matching
- * dio_device_id structure or %NULL if there is no match.
+ * Used by the driver core to check whether a DIO device present in the
+ * system is in a driver's list of supported devices. Returns 1 if supported,
+ * and 0 if there is no match.
*/
static int dio_bus_match(struct device *dev, struct device_driver *drv)
@@ -137,7 +137,6 @@ static int __init dio_driver_init(void)
postcore_initcall(dio_driver_init);
-EXPORT_SYMBOL(dio_match_device);
EXPORT_SYMBOL(dio_register_driver);
EXPORT_SYMBOL(dio_unregister_driver);
EXPORT_SYMBOL(dio_bus_type);