Constify input variable in scrypt kernel.
diff --git a/scrypt120713.cl b/scrypt120713.cl
index 69e2db8..695eaf3 100644
--- a/scrypt120713.cl
+++ b/scrypt120713.cl
@@ -689,7 +689,7 @@ void scrypt_core(uint4 X[8], __global uint4*restrict lookup)
#define NFLAG (0x7F)
__attribute__((reqd_work_group_size(WORKSIZE, 1, 1)))
-__kernel void search(__global uint4*restrict input, __global uint*restrict output, __global uint4*restrict padcache, uint4 pad0, uint4 pad1)
+__kernel void search(__global const uint4 * restrict input, __global uint*restrict output, __global uint4*restrict padcache, uint4 pad0, uint4 pad1)
{
uint gid = get_global_id(0);
uint4 X[8];