[PATCH 4.9 55/64] libnvdimm/btt: Remove unnecessary code in btt_freelist_init

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

From: Vishal Verma <vishal.l.verma@intel.com>

[ Upstream commit 2f8c9011151337d0bc106693f272f9bddbccfab2 ]

We call btt_log_read() twice, once to get the 'old' log entry, and again
to get the 'new' entry. However, we have no use for the 'old' entry, so
remove it.

Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/nvdimm/btt.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c
index 0c46ada027cf..e90ecb179622 100644
--- a/drivers/nvdimm/btt.c
+++ b/drivers/nvdimm/btt.c
@@ -447,9 +447,9 @@ static int btt_log_init(struct arena_info *arena)
 
 static int btt_freelist_init(struct arena_info *arena)
 {
-	int old, new, ret;
+	int new, ret;
 	u32 i, map_entry;
-	struct log_entry log_new, log_old;
+	struct log_entry log_new;
 
 	arena->freelist = kcalloc(arena->nfree, sizeof(struct free_entry),
 					GFP_KERNEL);
@@ -457,10 +457,6 @@ static int btt_freelist_init(struct arena_info *arena)
 		return -ENOMEM;
 
 	for (i = 0; i < arena->nfree; i++) {
-		old = btt_log_read(arena, i, &log_old, LOG_OLD_ENT);
-		if (old < 0)
-			return old;
-
 		new = btt_log_read(arena, i, &log_new, LOG_NEW_ENT);
 		if (new < 0)
 			return new;
-- 
2.25.1