[PATCH 2/3] st.ko: remove unnecessary normalize_buffer

[Bodo Stroesser <bstroesser@ts.fujitsu.com>]

From: Bodo Stroesser <bstroesser@ts.fujitsu.com>
Date: Mon, 2 Dec 2013 18:52:10 +0100
Subject: [PATCH 2/3] st.ko: remove unnecessary normalize_buffer

This patch removes an unnecessary call to normalize_buffer()
in enlarge_buffer()

In st_open() always a buffer of one page is allocated.
When the buffer needs to be enlarged later, it does not make
sense to free this page unconditionally.
 
Cc: Kai Makisara <kai.makisara@kolumbus.fi>
Signed-off-by: Bodo Stroesser <bstroesser@ts.fujitsu.com>

---

--- a/drivers/scsi/st.c	2013-12-02 18:52:10.000000000 +0100
+++ b/drivers/scsi/st.c	2013-12-02 18:52:10.000000000 +0100
@@ -3725,9 +3725,6 @@ static int enlarge_buffer(struct st_buff
 	if (new_size <= STbuffer->buffer_size)
 		return 1;
 
-	if (STbuffer->buffer_size <= PAGE_SIZE)
-		normalize_buffer(STbuffer);  /* Avoid extra segment */
-
 	max_segs = STbuffer->use_sg;
 
 	priority = GFP_KERNEL | __GFP_NOWARN;