powerpc: use consistent types in mktree

gcc v4.4 currently produces this build warning:

arch/powerpc/boot/mktree.c: In function 'main':
arch/powerpc/boot/mktree.c:104: warning: dereferencing type-punned pointer will break strict-aliasing rules

tmpbuf is only used as an array of unsigned ints, so declare it that way.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 5 insertions, 5 deletions

diff --git a/arch/powerpc/boot/mktree.c b/arch/powerpc/boot/mktree.c
index c2baae0a3d89..e2ae24340fc8 100644
--- a/arch/powerpc/boot/mktree.c
+++ b/arch/powerpc/boot/mktree.c
@@ -36,7 +36,7 @@ typedef struct boot_block {
 } boot_block_t;
 
 #define IMGBLK  512
-char    tmpbuf[IMGBLK];
+unsigned int    tmpbuf[IMGBLK / sizeof(unsigned int)];
 
 int main(int argc, char *argv[])
 {
@@ -95,13 +95,13 @@ int main(int argc, char *argv[])
 
         /* Assume zImage is an ELF file, and skip the 64K header.
         */
-        if (read(in_fd, tmpbuf, IMGBLK) != IMGBLK) {
+        if (read(in_fd, tmpbuf, sizeof(tmpbuf)) != sizeof(tmpbuf)) {
                 fprintf(stderr, "%s is too small to be an ELF image\n",
                                 argv[1]);
                 exit(4);
         }
 
-        if ((*(unsigned int *)tmpbuf) != htonl(0x7f454c46)) {
+        if (tmpbuf[0] != htonl(0x7f454c46)) {
                 fprintf(stderr, "%s is not an ELF image\n", argv[1]);
                 exit(4);
         }
@@ -121,11 +121,11 @@ int main(int argc, char *argv[])
         }
 
         while (nblks-- > 0) {
-                if (read(in_fd, tmpbuf, IMGBLK) < 0) {
+                if (read(in_fd, tmpbuf, sizeof(tmpbuf)) < 0) {
                         perror("zImage read");
                         exit(5);
                 }
-                cp = (unsigned int *)tmpbuf;
+                cp = tmpbuf;
                 for (i = 0; i < sizeof(tmpbuf) / sizeof(unsigned int); i++)
                         cksum += *cp++;
                 if (write(out_fd, tmpbuf, sizeof(tmpbuf)) != sizeof(tmpbuf)) {