[SPARC64]: Simplify read_obp_memory().

Kick out empty entries as soon as we spot them, and use memmove()
instead of a silly loop to make the operation more clear.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 11 insertions, 16 deletions

diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
index f146071a4b2a..973c4e122f28 100644
--- a/arch/sparc64/mm/init.c
+++ b/arch/sparc64/mm/init.c
@@ -122,24 +122,19 @@ static void __init read_obp_memory(const char *property,
                                 size = 0UL;
                         base = new_base;
                 }
-                regs[i].phys_addr = base;
-                regs[i].reg_size = size;
-        }
-
-        for (i = 0; i < ents; i++) {
-                if (regs[i].reg_size == 0UL) {
-                        int j;
-
-                        for (j = i; j < ents - 1; j++) {
-                                regs[j].phys_addr =
-                                        regs[j+1].phys_addr;
-                                regs[j].reg_size =
-                                        regs[j+1].reg_size;
-                        }
-
-                        ents--;
+                if (size == 0UL) {
+                        /* If it is empty, simply get rid of it.
+                         * This simplifies the logic of the other
+                         * functions that process these arrays.
+                         */
+                        memmove(&regs[i], &regs[i + 1],
+                                (ents - i - 1) * sizeof(regs[0]));
                         i--;
+                        ents--;
+                        continue;
                 }
+                regs[i].phys_addr = base;
+                regs[i].reg_size = size;
         }
 
         *num_ents = ents;