[POWERPC] Remove unused function call_with_mmu_off

	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