1 files changed, 14 insertions, 9 deletions

diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 270e6211c2e3..6307428d2c94 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -366,7 +366,6 @@ spi_alloc_master(struct device *dev, unsigned size)
 
         class_device_initialize(&master->cdev);
         master->cdev.class = &spi_master_class;
-        kobj_set_kset_s(&master->cdev, spi_master_class.subsys);
         master->cdev.dev = get_device(dev);
         spi_master_set_devdata(master, &master[1]);
 
@@ -466,14 +465,20 @@ EXPORT_SYMBOL_GPL(spi_unregister_master);
  */
 struct spi_master *spi_busnum_to_master(u16 bus_num)
 {
-        char                    name[9];
-        struct kobject          *bus;
-
-        snprintf(name, sizeof name, "spi%u", bus_num);
-        bus = kset_find_obj(&spi_master_class.subsys.kset, name);
-        if (bus)
-                return container_of(bus, struct spi_master, cdev.kobj);
-        return NULL;
+        struct class_device     *cdev;
+        struct spi_master       *master = NULL;
+        struct spi_master       *m;
+
+        down(&spi_master_class.sem);
+        list_for_each_entry(cdev, &spi_master_class.children, node) {
+                m = container_of(cdev, struct spi_master, cdev);
+                if (m->bus_num == bus_num) {
+                        master = spi_master_get(m);
+                        break;
+                }
+        }
+        up(&spi_master_class.sem);
+        return master;
 }
 EXPORT_SYMBOL_GPL(spi_busnum_to_master);