kexec: clear crashk_res if all its memory has been released

[linux-2.6-microblaze.git] / kernel / kexec_core.c

diff --git a/kernel/kexec_core.c b/kernel/kexec_core.c
index d1ab139..bcc86a2 100644 (file)
--- a/kernel/kexec_core.c
+++ b/kernel/kexec_core.c
@@ -1137,15 +1137,18 @@ int crash_shrink_memory(unsigned long new_size)
        end = start + new_size;
        crash_free_reserved_phys_range(end, crashk_res.end);
 
-       if (start == end)
-               release_resource(&crashk_res);
-
        ram_res->start = end;
        ram_res->end = crashk_res.end;
        ram_res->flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM;
        ram_res->name = "System RAM";
 
-       crashk_res.end = end - 1;
+       if (start == end) {
+               release_resource(&crashk_res);
+               crashk_res.start = 0;
+               crashk_res.end = 0;
+       } else {
+               crashk_res.end = end - 1;
+       }
 
        insert_resource(&iomem_resource, ram_res);