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>

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index b3469898717e47ffec84dce0c4c11087fe90007d..4ac01d0ce62421a3c53fa6c664b4343f01c8d593 100644 (file)
--- 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");