fpga: add attribute groups

Make it easy to add attributes to low level FPGA drivers the right
way.  Add attribute groups pointers to structures that are used when
registering a manager, bridge, or group.  When the low level driver
registers, set the device attribute group.  The attributes are
created in device_add.

Signed-off-by: Alan Tull <atull@kernel.org>
Acked-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/fpga/fpga-region.h b/include/linux/fpga/fpga-region.h
index 704844944631..b6520318ab9c 100644
--- a/include/linux/fpga/fpga-region.h
+++ b/include/linux/fpga/fpga-region.h
@@ -14,6 +14,7 @@
  * @info: FPGA image info
  * @priv: private data
  * @get_bridges: optional function to get bridges to a list
+ * @groups: optional attribute groups.
  */
 struct fpga_region {
         struct device dev;
@@ -23,6 +24,7 @@ struct fpga_region {
         struct fpga_image_info *info;
         void *priv;
         int (*get_bridges)(struct fpga_region *region);
+        const struct attribute_group **groups;
 };
 
 #define to_fpga_region(d) container_of(d, struct fpga_region, dev)