common/memsize.c: restore content of the base address

For the last return of function get_ram_size(),
when size=maxsize, restore the base address (*base)
content.

Add comment for the remaining case to avoid regression:
this case is already correctly handled.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

diff --git a/common/memsize.c b/common/memsize.c
index 6dc4bb2..c315275 100644 (file)
--- a/common/memsize.c
+++ b/common/memsize.c
@@ -77,9 +77,16 @@ long get_ram_size(long *base, long maxsize)
                                addr  = base + cnt;
                                *addr = save[--i];
                        }
+                       /* warning: don't restore save_base in this case,
+                        * it is already done in the loop because
+                        * base and base+size share the same physical memory
+                        * and *base is saved after *(base+size) modification
+                        * in first loop
+                        */
                        return (size);
                }
        }
+       *base = save_base;
 
        return (maxsize);
 }