x86: do not printout if we do not find setup_data

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 5 insertions, 0 deletions

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index b3469898717e..4ac01d0ce624 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -399,6 +399,7 @@ static void __init reserve_setup_data(void)
         struct setup_data *data;
         u64 pa_data;
         char buf[32];
+        int found = 0;
 
         if (boot_params.hdr.version < 0x0209)
                 return;
@@ -409,9 +410,13 @@ static void __init reserve_setup_data(void)
                 reserve_early(pa_data, pa_data+sizeof(*data)+data->len, buf);
                 e820_update_range(pa_data, sizeof(*data)+data->len,
                          E820_RAM, E820_RESERVED_KERN);
+                found = 1;
                 pa_data = data->next;
                 early_iounmap(data, sizeof(*data));
         }
+        if (!found)
+                return;
+
         sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
         printk(KERN_INFO "extended physical RAM map:\n");
         e820_print_map("reserve setup_data");