scsi: gdth.c use unaligned access helpers

index 822d521..239274f 100644
@@ -131,6 +131,7 @@
 #include <asm/system.h>
 #include <asm/io.h>
 #include <asm/uaccess.h>
+#include <asm/unaligned.h>
 #include <linux/spinlock.h>
 #include <linux/blkdev.h>
 #include <linux/scatterlist.h>

@@ -2441,8 +2442,8 @@ static int gdth_fill_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, ushort hdrive)
 {
     register gdth_cmd_str *cmdp;
     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
-    ulong32 cnt, blockcnt;
-    ulong64 no, blockno;
+    ulong32 blockcnt;
+    ulong64 blockno;
     int i, cmd_index, read_write, sgcnt, mode64;
 
     cmdp = ha->pccb;

@@ -2510,19 +2511,15 @@ static int gdth_fill_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, ushort hdrive)
 
     if (read_write) {
         if (scp->cmd_len == 16) {
-            memcpy(&no, &scp->cmnd[2], sizeof(ulong64));
-            blockno = be64_to_cpu(no);
-            memcpy(&cnt, &scp->cmnd[10], sizeof(ulong32));
-            blockcnt = be32_to_cpu(cnt);
+		blockno = get_unaligned_be64(&scp->cmnd[2]);
+		blockcnt = get_unaligned_be64(&scp->cmnd[10]);
         } else if (scp->cmd_len == 10) {
-            memcpy(&no, &scp->cmnd[2], sizeof(ulong32));
-            blockno = be32_to_cpu(no);
-            memcpy(&cnt, &scp->cmnd[7], sizeof(ushort));
-            blockcnt = be16_to_cpu(cnt);
+		blockno = get_unaligned_be32(&scp->cmnd[2]);
+		blockcnt = get_unaligned_be16(&scp->cmnd[7]);
         } else {
-            memcpy(&no, &scp->cmnd[0], sizeof(ulong32));
-            blockno = be32_to_cpu(no) & 0x001fffffUL;
-            blockcnt= scp->cmnd[4]==0 ? 0x100 : scp->cmnd[4];
+		blockno = get_unaligned_be32(&scp->cmnd[2]);
+		blockno &= 0x001fffffUL;
+		blockcnt= scp->cmnd[4]==0 ? 0x100 : scp->cmnd[4];
         }
         if (mode64) {
             cmdp->u.cache64.BlockNo = blockno;