[POWERPC] Fix VDSO gettimeofday() when called with NULL struct timeval

[safe/jmp/linux-2.6] / arch / powerpc / kernel / vdso32 / gettimeofday.S

diff --git a/arch/powerpc/kernel/vdso32/gettimeofday.S b/arch/powerpc/kernel/vdso32/gettimeofday.S
index 05909f7..72ca26d 100644 (file)
--- a/arch/powerpc/kernel/vdso32/gettimeofday.S
+++ b/arch/powerpc/kernel/vdso32/gettimeofday.S
@@ -32,6 +32,8 @@ V_FUNCTION_BEGIN(__kernel_gettimeofday)
        mr      r11,r4                  /* r11 saves tz */
        bl      __get_datapage@local    /* get data page */
        mr      r9, r3                  /* datapage ptr in r9 */
+       cmplwi  r10,0                   /* check if tv is NULL */
+       beq     3f
        bl      __do_get_xsec@local     /* get xsec from tb & kernel */
        bne-    2f                      /* out of line -> do syscall */
 
@@ -50,7 +52,7 @@ V_FUNCTION_BEGIN(__kernel_gettimeofday)
        mulhwu  r5,r5,r6
        stw     r5,TVAL32_TV_USEC(r10)
 
-       cmpli   cr0,r11,0               /* check if tz is NULL */
+3:     cmplwi  r11,0                   /* check if tz is NULL */
        beq     1f
        lwz     r4,CFG_TZ_MINUTEWEST(r9)/* fill tz */
        lwz     r5,CFG_TZ_DSTTIME(r9)