staging: fsl-mc: drop root dprc counting

It was used just to sanity check some obscure
cases that are unlikely to ever happen.

Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Acked-by: Stuart Yoder <stuart.yoder@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/fsl-mc/bus/fsl-mc-bus.c b/drivers/staging/fsl-mc/bus/fsl-mc-bus.c
index 5ac373c..cc20dc4 100644 (file)
--- a/drivers/staging/fsl-mc/bus/fsl-mc-bus.c
+++ b/drivers/staging/fsl-mc/bus/fsl-mc-bus.c
@@ -77,9 +77,6 @@ static int fsl_mc_bus_match(struct device *dev, struct device_driver *drv)
        struct fsl_mc_driver *mc_drv = to_fsl_mc_driver(drv);
        bool found = false;
 
-       if (WARN_ON(!fsl_mc_bus_exists()))
-               goto out;
-
        if (!mc_drv->match_id_table)
                goto out;
 
@@ -149,8 +146,6 @@ struct bus_type fsl_mc_bus_type = {
 };
 EXPORT_SYMBOL_GPL(fsl_mc_bus_type);
 
-static atomic_t root_dprc_count = ATOMIC_INIT(0);
-
 static int fsl_mc_driver_probe(struct device *dev)
 {
        struct fsl_mc_driver *mc_drv;
@@ -246,15 +241,6 @@ void fsl_mc_driver_unregister(struct fsl_mc_driver *mc_driver)
 EXPORT_SYMBOL_GPL(fsl_mc_driver_unregister);
 
 /**
- * fsl_mc_bus_exists - check if a root dprc exists
- */
-bool fsl_mc_bus_exists(void)
-{
-       return atomic_read(&root_dprc_count) > 0;
-}
-EXPORT_SYMBOL_GPL(fsl_mc_bus_exists);
-
-/**
  * fsl_mc_get_root_dprc - function to traverse to the root dprc
  */
 void fsl_mc_get_root_dprc(struct device *dev,
@@ -506,8 +492,6 @@ int fsl_mc_device_add(struct dprc_obj_desc *obj_desc,
                        }
 
                        mc_io2 = mc_io;
-
-                       atomic_inc(&root_dprc_count);
                }
 
                error = get_dprc_icid(mc_io2, obj_desc->id, &mc_dev->icid);
@@ -588,17 +572,9 @@ void fsl_mc_device_remove(struct fsl_mc_device *mc_dev)
        device_del(&mc_dev->dev);
        put_device(&mc_dev->dev);
 
-       if (strcmp(mc_dev->obj_desc.type, "dprc") == 0) {
+       if (strcmp(mc_dev->obj_desc.type, "dprc") == 0)
                mc_bus = to_fsl_mc_bus(mc_dev);
 
-               if (fsl_mc_is_root_dprc(&mc_dev->dev)) {
-                       if (atomic_read(&root_dprc_count) > 0)
-                               atomic_dec(&root_dprc_count);
-                       else
-                               WARN_ON(1);
-               }
-       }
-
        if (mc_bus)
                devm_kfree(mc_dev->dev.parent, mc_bus);
        else