fpga: region: add compat_id support

This patch introduces a compat_id pointer member and sysfs interface
for each fpga region, similar as compat_id for fpga manager, it allows
applications to read the per region compat_id for compatibility
checking before other actions on this fpga-region (e.g. PR).

Signed-off-by: Wu Hao <hao.wu@intel.com>
Acked-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 d7071cddd727..0521b7f577a4 100644
--- a/include/linux/fpga/fpga-region.h
+++ b/include/linux/fpga/fpga-region.h
@@ -14,6 +14,7 @@
  * @bridge_list: list of FPGA bridges specified in region
  * @mgr: FPGA manager
  * @info: FPGA image info
+ * @compat_id: FPGA region id for compatibility check.
  * @priv: private data
  * @get_bridges: optional function to get bridges to a list
  */
@@ -23,6 +24,7 @@ struct fpga_region {
         struct list_head bridge_list;
         struct fpga_manager *mgr;
         struct fpga_image_info *info;
+        struct fpga_compat_id *compat_id;
         void *priv;
         int (*get_bridges)(struct fpga_region *region);
 };