x86/kaslr: Drop redundant check in store_slot_info()

Drop unnecessary check that number of slots is not zero in
store_slot_info, it's guaranteed to be at least 1 by the calculation.

Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20200728225722.67457-16-nivedita@alum.mit.edu

diff --git a/arch/x86/boot/compressed/kaslr.c b/arch/x86/boot/compressed/kaslr.c
index 5c7457c..0c64026 100644 (file)
--- a/arch/x86/boot/compressed/kaslr.c
+++ b/arch/x86/boot/compressed/kaslr.c
@@ -525,13 +525,10 @@ static void store_slot_info(struct mem_vector *region, unsigned long image_size)
                return;
 
        slot_area.addr = region->start;
-       slot_area.num = (region->size - image_size) /
-                       CONFIG_PHYSICAL_ALIGN + 1;
+       slot_area.num = 1 + (region->size - image_size) / CONFIG_PHYSICAL_ALIGN;
 
-       if (slot_area.num > 0) {
-               slot_areas[slot_area_index++] = slot_area;
-               slot_max += slot_area.num;
-       }
+       slot_areas[slot_area_index++] = slot_area;
+       slot_max += slot_area.num;
 }
 
 /*