[SCSI] st: remove unused orig_frp_segs

orig_frp_segs in struct st_buffer is always zero. We don't need it.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Kai Makisara <Kai.Makisara@kolumbus.fi>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

2 files changed, 3 insertions, 5 deletions

diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
index 22ddca891e17..50dbe14db37b 100644
--- a/drivers/scsi/st.c
+++ b/drivers/scsi/st.c
@@ -3749,7 +3749,7 @@ static struct st_buffer *new_tape_buffer(int need_dma, int max_sg)
                 printk(KERN_NOTICE "st: Can't allocate new tape buffer.\n");
                 return NULL;
         }
-        tb->frp_segs = tb->orig_frp_segs = 0;
+        tb->frp_segs = 0;
         tb->use_sg = max_sg;
         tb->dma = need_dma;
         tb->buffer_size = 0;
@@ -3839,11 +3839,11 @@ static void normalize_buffer(struct st_buffer * STbuffer)
 {
         int i, order = STbuffer->map_data.page_order;
 
-        for (i = STbuffer->orig_frp_segs; i < STbuffer->frp_segs; i++) {
+        for (i = 0; i < STbuffer->frp_segs; i++) {
                 __free_pages(STbuffer->reserved_pages[i], order);
                 STbuffer->buffer_size -= (PAGE_SIZE << order);
         }
-        STbuffer->frp_segs = STbuffer->orig_frp_segs;
+        STbuffer->frp_segs = 0;
         STbuffer->frp_sg_current = 0;
         STbuffer->sg_segs = 0;
         STbuffer->map_data.page_order = 0;
@@ -4304,7 +4304,6 @@ static void scsi_tape_release(struct kref *kref)
         tpnt->device = NULL;
 
         if (tpnt->buffer) {
-                tpnt->buffer->orig_frp_segs = 0;
                 normalize_buffer(tpnt->buffer);
                 kfree(tpnt->buffer->reserved_pages);
                 kfree(tpnt->buffer);
diff --git a/drivers/scsi/st.h b/drivers/scsi/st.h
index d29760776f42..e682f8045034 100644
--- a/drivers/scsi/st.h
+++ b/drivers/scsi/st.h
@@ -51,7 +51,6 @@ struct st_buffer {
         unsigned char *b_data;
         unsigned short use_sg;  /* zero or max number of s/g segments for this adapter */
         unsigned short sg_segs;         /* number of segments in s/g list */
-        unsigned short orig_frp_segs;   /* number of segments allocated at first try */
         unsigned short frp_segs;        /* number of buffer segments */
         unsigned int frp_sg_current;    /* driver buffer length currently in s/g list */
 };