x86: xen: remove unnecessary variable in xen_foreach_remap_area()

Remove unnecessary variable mfn in function xen_foreach_remap_area() and,
refactor the code.

Variable mfn at line 518:mfn = xen_remap_buf.mfns[i];
is only being used to store a value to be passed as
an argument to the xen_update_mem_tables() function.
This value can be passed directly, which makes variable
mfn unnecessary. Also, value assigned to variable mfn
at line 534:mfn = xen_remap_mfn; is never used.

Addresses-Coverity-ID: 1260110
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>

diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
index a5bf7c4514357e1e89d2703df5cb2052aeabcc12..c81046323ebca6df33ded3285affa1027c4482f4 100644 (file)
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -499,7 +499,7 @@ static unsigned long __init xen_foreach_remap_area(unsigned long nr_pages,
 void __init xen_remap_memory(void)
 {
        unsigned long buf = (unsigned long)&xen_remap_buf;
-       unsigned long mfn_save, mfn, pfn;
+       unsigned long mfn_save, pfn;
        unsigned long remapped = 0;
        unsigned int i;
        unsigned long pfn_s = ~0UL;
@@ -515,8 +515,7 @@ void __init xen_remap_memory(void)
 
                pfn = xen_remap_buf.target_pfn;
                for (i = 0; i < xen_remap_buf.size; i++) {
-                       mfn = xen_remap_buf.mfns[i];
-                       xen_update_mem_tables(pfn, mfn);
+                       xen_update_mem_tables(pfn, xen_remap_buf.mfns[i]);
                        remapped++;
                        pfn++;
                }
@@ -530,8 +529,6 @@ void __init xen_remap_memory(void)
                        pfn_s = xen_remap_buf.target_pfn;
                        len = xen_remap_buf.size;
                }
-
-               mfn = xen_remap_mfn;
                xen_remap_mfn = xen_remap_buf.next_area_mfn;
        }