1 files changed, 7 insertions, 11 deletions

diff --git a/include/asm-arm/arch-iop13xx/adma.h b/include/asm-arm/arch-iop13xx/adma.h
index 90d14ee564f5..ef4f5da2029f 100644
--- a/include/asm-arm/arch-iop13xx/adma.h
+++ b/include/asm-arm/arch-iop13xx/adma.h
@@ -198,17 +198,13 @@ iop_chan_memset_slot_count(size_t len, int *slots_per_op)
 static inline int
 iop_chan_xor_slot_count(size_t len, int src_cnt, int *slots_per_op)
 {
-        int num_slots;
-        /* slots_to_find = 1 for basic descriptor + 1 per 4 sources above 1
-         * (1 source => 8 bytes) (1 slot => 32 bytes)
-         */
-        num_slots = 1 + (((src_cnt - 1) << 3) >> 5);
-        if (((src_cnt - 1) << 3) & 0x1f)
-                num_slots++;
-
-        *slots_per_op = num_slots;
-
-        return num_slots;
+        static const char slot_count_table[] = { 1, 2, 2, 2,
+                                                 2, 3, 3, 3,
+                                                 3, 4, 4, 4,
+                                                 4, 5, 5, 5,
+                                                };
+        *slots_per_op = slot_count_table[src_cnt - 1];
+        return *slots_per_op;
 }
 
 #define ADMA_MAX_BYTE_COUNT     (16 * 1024 * 1024)