Blackfin: fix length checking in kgdb_ebin2mem

The kgdb_ebin2mem() was decrementing the count variable to do parsing, but
then later still tries to use it based on its original meaning.  So leave
it untouched and use a different variable to walk the memory.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

1 files changed, 2 insertions, 3 deletions

diff --git a/arch/blackfin/kernel/kgdb.c b/arch/blackfin/kernel/kgdb.c
index c5362b2b9ed1..da28f796ad78 100644
--- a/arch/blackfin/kernel/kgdb.c
+++ b/arch/blackfin/kernel/kgdb.c
@@ -587,19 +587,18 @@ int kgdb_ebin2mem(char *buf, char *mem, int count)
         unsigned short *mmr16;
         unsigned long *mmr32;
         int err;
-        int size = 0;
+        int size;
         int cpu = raw_smp_processor_id();
 
         tmp_old = tmp_new = buf;
 
-        while (count-- > 0) {
+        for (size = 0; size < count; ++size) {
                 if (*tmp_old == 0x7d)
                         *tmp_new = *(++tmp_old) ^ 0x20;
                 else
                         *tmp_new = *tmp_old;
                 tmp_new++;
                 tmp_old++;
-                size++;
         }
 
         err = validate_memory_access_address((unsigned long)mem, size);