Blackfin arch: cplb mananger: use a do...while loop rather than a for loop

use a do...while loop rather than a for loop to get slightly better
optimization and to avoid gcc "may be used uninitialized" warnings ...
we know that the [id]cplb_nr_bounds variables will never be 0, so this
is OK

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

1 files changed, 8 insertions, 4 deletions

diff --git a/arch/blackfin/kernel/cplb-nompu/cplbmgr.c b/arch/blackfin/kernel/cplb-nompu/cplbmgr.c
index 376249ab269..8cbb47c7b66 100644
--- a/arch/blackfin/kernel/cplb-nompu/cplbmgr.c
+++ b/arch/blackfin/kernel/cplb-nompu/cplbmgr.c
@@ -163,12 +163,14 @@ MGR_ATTR static int icplb_miss(int cpu)
                 nr_icplb_supv_miss[cpu]++;
 
         base = 0;
-        for (idx = 0; idx < icplb_nr_bounds; idx++) {
+        idx = 0;
+        do {
                 eaddr = icplb_bounds[idx].eaddr;
                 if (addr < eaddr)
                         break;
                 base = eaddr;
-        }
+        } while (++idx < icplb_nr_bounds);
+
         if (unlikely(idx == icplb_nr_bounds))
                 return CPLB_NO_ADDR_MATCH;
 
@@ -208,12 +210,14 @@ MGR_ATTR static int dcplb_miss(int cpu)
                 nr_dcplb_supv_miss[cpu]++;
 
         base = 0;
-        for (idx = 0; idx < dcplb_nr_bounds; idx++) {
+        idx = 0;
+        do {
                 eaddr = dcplb_bounds[idx].eaddr;
                 if (addr < eaddr)
                         break;
                 base = eaddr;
-        }
+        } while (++idx < dcplb_nr_bounds);
+
         if (unlikely(idx == dcplb_nr_bounds))
                 return CPLB_NO_ADDR_MATCH;