1 files changed, 14 insertions, 4 deletions

diff --git a/include/asm-powerpc/ppc_asm.h b/include/asm-powerpc/ppc_asm.h
index a940cfe040da..fa083d8e4663 100644
--- a/include/asm-powerpc/ppc_asm.h
+++ b/include/asm-powerpc/ppc_asm.h
@@ -30,9 +30,9 @@ BEGIN_FTR_SECTION;							\
         mfspr   ra,SPRN_PURR;           /* get processor util. reg */   \
 END_FTR_SECTION_IFSET(CPU_FTR_PURR);                                    \
 BEGIN_FTR_SECTION;                                                      \
-        mftb    ra;                     /* or get TB if no PURR */      \
+        MFTB(ra);                       /* or get TB if no PURR */      \
 END_FTR_SECTION_IFCLR(CPU_FTR_PURR);                                    \
-        ld      rb,PACA_STARTPURR(r13);                         \
+        ld      rb,PACA_STARTPURR(r13);                                 \
         std     ra,PACA_STARTPURR(r13);                                 \
         subf    rb,rb,ra;               /* subtract start value */      \
         ld      ra,PACA_USER_TIME(r13);                                 \
@@ -45,9 +45,9 @@ BEGIN_FTR_SECTION;							\
         mfspr   ra,SPRN_PURR;           /* get processor util. reg */   \
 END_FTR_SECTION_IFSET(CPU_FTR_PURR);                                    \
 BEGIN_FTR_SECTION;                                                      \
-        mftb    ra;                     /* or get TB if no PURR */      \
+        MFTB(ra);                       /* or get TB if no PURR */      \
 END_FTR_SECTION_IFCLR(CPU_FTR_PURR);                                    \
-        ld      rb,PACA_STARTPURR(r13);                         \
+        ld      rb,PACA_STARTPURR(r13);                                 \
         std     ra,PACA_STARTPURR(r13);                                 \
         subf    rb,rb,ra;               /* subtract start value */      \
         ld      ra,PACA_SYSTEM_TIME(r13);                               \
@@ -274,6 +274,16 @@ END_FTR_SECTION_IFSET(CPU_FTR_601)
 #define ISYNC_601
 #endif
 
+#ifdef CONFIG_PPC_CELL
+#define MFTB(dest)                      \
+90:     mftb  dest;                     \
+BEGIN_FTR_SECTION_NESTED(96);           \
+        cmpwi dest,0;                   \
+        beq-  90b;                      \
+END_FTR_SECTION_NESTED(CPU_FTR_CELL_TB_BUG, CPU_FTR_CELL_TB_BUG, 96)
+#else
+#define MFTB(dest)                      mftb dest
+#endif
 
 #ifndef CONFIG_SMP
 #define TLBSYNC