drivers/fsi: add driver to device matches

Driver bind to devices based on the engine types & (optional) versions.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Chris Bostic <cbostic@us.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 21 insertions, 0 deletions

diff --git a/drivers/fsi/fsi-core.c b/drivers/fsi/fsi-core.c
index 3e45306359b3..3d55bd547178 100644
--- a/drivers/fsi/fsi-core.c
+++ b/drivers/fsi/fsi-core.c
@@ -19,8 +19,29 @@
 
 /* FSI core & Linux bus type definitions */
 
+static int fsi_bus_match(struct device *dev, struct device_driver *drv)
+{
+        struct fsi_device *fsi_dev = to_fsi_dev(dev);
+        struct fsi_driver *fsi_drv = to_fsi_drv(drv);
+        const struct fsi_device_id *id;
+
+        if (!fsi_drv->id_table)
+                return 0;
+
+        for (id = fsi_drv->id_table; id->engine_type; id++) {
+                if (id->engine_type != fsi_dev->engine_type)
+                        continue;
+                if (id->version == FSI_VERSION_ANY ||
+                                id->version == fsi_dev->version)
+                        return 1;
+        }
+
+        return 0;
+}
+
 struct bus_type fsi_bus_type = {
         .name           = "fsi",
+        .match          = fsi_bus_match,
 };
 EXPORT_SYMBOL_GPL(fsi_bus_type);