tracing/blktrace: fix up checkpatch reported problems in ftrace plugin patch

Also make sure sparse (make C=2 block/blktrace.o) is happy too.

Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 1 insertions, 4 deletions

diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index 01714efdc65a..8a17f7edcc74 100644
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -19,6 +19,7 @@
 #include <linux/kmod.h>
 #include <linux/ctype.h>
 #include <linux/genhd.h>
+#include <linux/blktrace_api.h>
 
 #include "check.h"
 
@@ -268,10 +269,6 @@ ssize_t part_fail_store(struct device *dev,
 }
 #endif
 
-#ifdef CONFIG_BLK_DEV_IO_TRACE
-extern struct attribute_group blk_trace_attr_group;
-#endif
-
 static DEVICE_ATTR(partition, S_IRUGO, part_partition_show, NULL);
 static DEVICE_ATTR(start, S_IRUGO, part_start_show, NULL);
 static DEVICE_ATTR(size, S_IRUGO, part_size_show, NULL);