powerpc: Fix uninitialised variable in VSX alignment code

This fixes an uninitialised variable in the VSX alignment code.  It can
cause warnings from GCC (noticed with gcc-4.1.1).  Gcc is actually
correct in this instance, and this bug could cause the alignment
interrupt handler to send a SIGSEGV to the process on a legitimate
access.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

diff --git a/arch/powerpc/kernel/align.c b/arch/powerpc/kernel/align.c
index 367129789cc0854a01fd96efc88824d7f9c995a8..5af4e9b2dbe2c6dcdde0213809f0d74673e19252 100644 (file)
--- a/arch/powerpc/kernel/align.c
+++ b/arch/powerpc/kernel/align.c
@@ -647,7 +647,7 @@ static int emulate_vsx(unsigned char __user *addr, unsigned int reg,
                       unsigned int flags, unsigned int length)
 {
        char *ptr = (char *) &current->thread.TS_FPR(reg);
-       int ret;
+       int ret = 0;
 
        flush_vsx_to_thread(current);