dax: avoid -Wempty-body warnings

gcc warns about an empty body in an else statement:

drivers/dax/bus.c: In function 'do_id_store':
drivers/dax/bus.c:94:48: error: suggest braces around empty body in an 'else' statement [-Werror=empty-body]
   94 |                         /* nothing to remove */;
      |                                                ^
drivers/dax/bus.c:99:43: error: suggest braces around empty body in an 'else' statement [-Werror=empty-body]
   99 |                 /* dax_id already added */;
      |                                           ^

In both of these cases, the 'else' exists only to have a place to
add a comment, but that comment doesn't really explain that much
either, so the easiest way to shut up that warning is to just
remove the else.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20210322114514.3490752-1-arnd@kernel.org
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c
index 452e85a..5aee26e 100644 (file)
--- a/drivers/dax/bus.c
+++ b/drivers/dax/bus.c
@@ -90,13 +90,11 @@ static ssize_t do_id_store(struct device_driver *drv, const char *buf,
                                list_add(&dax_id->list, &dax_drv->ids);
                        } else
                                rc = -ENOMEM;
-               } else
-                       /* nothing to remove */;
+               }
        } else if (action == ID_REMOVE) {
                list_del(&dax_id->list);
                kfree(dax_id);
-       } else
-               /* dax_id already added */;
+       }
        mutex_unlock(&dax_bus_lock);
 
        if (rc < 0)