3 files changed, 3 insertions, 4 deletions

diff --git a/arch/x86/boot/a20.c b/arch/x86/boot/a20.c
index 90943f83e84d..e01aafd03bde 100644
--- a/arch/x86/boot/a20.c
+++ b/arch/x86/boot/a20.c
@@ -115,8 +115,6 @@ static void enable_a20_fast(void)
 
 int enable_a20(void)
 {
-        int loops = A20_ENABLE_LOOPS;
-
 #if defined(CONFIG_X86_ELAN)
         /* Elan croaks if we try to touch the KBC */
         enable_a20_fast();
@@ -128,6 +126,7 @@ int enable_a20(void)
         enable_a20_kbc();
         return 0;
 #else
+       int loops = A20_ENABLE_LOOPS;
         while (loops--) {
                 /* First, check to see if A20 is already enabled
                    (legacy free, etc.) */
diff --git a/arch/x86/boot/compressed/relocs.c b/arch/x86/boot/compressed/relocs.c
index d01ea42187e6..edaadea90aaf 100644
--- a/arch/x86/boot/compressed/relocs.c
+++ b/arch/x86/boot/compressed/relocs.c
@@ -191,7 +191,7 @@ static void read_ehdr(FILE *fp)
                 die("Cannot read ELF header: %s\n",
                         strerror(errno));
         }
-        if (memcmp(ehdr.e_ident, ELFMAG, 4) != 0) {
+        if (memcmp(ehdr.e_ident, ELFMAG, SELFMAG) != 0) {
                 die("No ELF magic\n");
         }
         if (ehdr.e_ident[EI_CLASS] != ELFCLASS32) {
diff --git a/arch/x86/boot/printf.c b/arch/x86/boot/printf.c
index c1d00c0274c4..50e47cdbdddd 100644
--- a/arch/x86/boot/printf.c
+++ b/arch/x86/boot/printf.c
@@ -56,7 +56,7 @@ static char *number(char *str, long num, int base, int size, int precision,
         if (type & LEFT)
                 type &= ~ZEROPAD;
         if (base < 2 || base > 36)
-                return 0;
+                return NULL;
         c = (type & ZEROPAD) ? '0' : ' ';
         sign = 0;
         if (type & SIGN) {