[ARM] Fix SMP booting

Processor support files now use r6 in their CPU setup code, so
we can't rely on r6 being preserved.  Use r7 instead.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index 2242f5f..4fe386e 100644 (file)
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -114,9 +114,9 @@ ENTRY(secondary_startup)
         * Use the page tables supplied from  __cpu_up.
         */
        adr     r4, __secondary_data
-       ldmia   r4, {r5, r6, r13}               @ address to jump to after
+       ldmia   r4, {r5, r7, r13}               @ address to jump to after
        sub     r4, r4, r5                      @ mmu has been enabled
-       ldr     r4, [r6, r4]                    @ get secondary_data.pgdir
+       ldr     r4, [r7, r4]                    @ get secondary_data.pgdir
        adr     lr, __enable_mmu                @ return address
        add     pc, r10, #12                    @ initialise processor
                                                @ (return control reg)
@@ -125,7 +125,7 @@ ENTRY(secondary_startup)
         * r6  = &secondary_data
         */
 ENTRY(__secondary_switched)
-       ldr     sp, [r6, #4]                    @ get secondary_data.stack
+       ldr     sp, [r7, #4]                    @ get secondary_data.stack
        mov     fp, #0
        b       secondary_start_kernel