[POWERPC] Remove unused function call_with_mmu_off

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 0 insertions, 42 deletions

diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
index e8883d42c43c..6bf4a4637209 100644
--- a/arch/powerpc/kernel/misc_64.S
+++ b/arch/powerpc/kernel/misc_64.S
@@ -101,48 +101,6 @@ _GLOBAL(call___do_IRQ)
         blr
 #endif /* CONFIG_IRQSTACKS */
 
-        /*
- * To be called by C code which needs to do some operations with MMU
- * disabled. Note that interrupts have to be disabled by the caller
- * prior to calling us. The code called _MUST_ be in the RMO of course
- * and part of the linear mapping as we don't attempt to translate the
- * stack pointer at all. The function is called with the stack switched
- * to this CPU emergency stack
- *
- * prototype is void *call_with_mmu_off(void *func, void *data);
- *
- * the called function is expected to be of the form
- *
- * void *called(void *data); 
- */
-_GLOBAL(call_with_mmu_off)
-        mflr    r0                      /* get link, save it on stackframe */
-        std     r0,16(r1)
-        mr      r1,r5                   /* save old stack ptr */
-        ld      r1,PACAEMERGSP(r13)     /* get emerg. stack */
-        subi    r1,r1,STACK_FRAME_OVERHEAD
-        std     r0,16(r1)               /* save link on emerg. stack */
-        std     r5,0(r1)                /* save old stack ptr in backchain */
-        ld      r3,0(r3)                /* get to real function ptr (assume same TOC) */
-        bl      2f                      /* we need LR to return, continue at label 2 */
-
-        ld      r0,16(r1)               /* we return here from the call, get LR and */
-        ld      r1,0(r1)                /* .. old stack ptr */
-        mtspr   SPRN_SRR0,r0            /* and get back to virtual mode with these */
-        mfmsr   r4
-        ori     r4,r4,MSR_IR|MSR_DR
-        mtspr   SPRN_SRR1,r4
-        rfid
-
-2:      mtspr   SPRN_SRR0,r3            /* coming from above, enter real mode */
-        mr      r3,r4                   /* get parameter */
-        mfmsr   r0
-        ori     r0,r0,MSR_IR|MSR_DR
-        xori    r0,r0,MSR_IR|MSR_DR
-        mtspr   SPRN_SRR1,r0
-        rfid
-
-
         .section        ".toc","aw"
 PPC64_CACHES:
         .tc             ppc64_caches[TC],ppc64_caches