ENGR00227425 mx6sl: Need to save all registers before calling C function

Different linker may use r12, we should save/restore all
registers(r0-r12) before calling C function to prevent
these registers from corruption in C code.

Signed-off-by: Anson Huang <b20788@freescale.com>

diff --git a/arch/arm/mach-mx6/mx6_suspend.S b/arch/arm/mach-mx6/mx6_suspend.S
index a5815ef9bd6ffd23db1efeecd1b775534e9e6928..683ba38b05198fc8add9bc4e983f038bb670d05e 100644 (file)
--- a/arch/arm/mach-mx6/mx6_suspend.S
+++ b/arch/arm/mach-mx6/mx6_suspend.S
@@ -1519,11 +1519,11 @@ restore control register to enable cache
 #endif
 
        mov     r8, lr
-       push    {r0}
+       push    {r0-r12}
 
        /* Set up the per-CPU stacks */
        bl      cpu_init
-       pop     {r0}
+       pop     {r0-r12}
 
        /*
         * Restore the MMU table entry that was modified for