powerpc/fsl_pci: Correct fsl_pci_mcheck_exception

get_user() had it args reversed causing NIP to be NULL:ed instead
of fixing up the PCI access.

Note: This still hangs my P1020 Freescale CPU hard, but at least
I get a NIP now.

Signed-off-by: Joakim Tjernlund <joakim.tjernlund@infinera.com>
Acked-by: Li Yang <leoyang.li@nxp.com>
Signed-off-by: Scott Wood <oss@buserror.net>

diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c
index 1e57edd..0c524c2 100644 (file)
--- a/arch/powerpc/sysdev/fsl_pci.c
+++ b/arch/powerpc/sysdev/fsl_pci.c
@@ -1070,7 +1070,7 @@ int fsl_pci_mcheck_exception(struct pt_regs *regs)
        if (is_in_pci_mem_space(addr)) {
                if (user_mode(regs)) {
                        pagefault_disable();
-                       ret = get_user(regs->nip, &inst);
+                       ret = get_user(inst, (__u32 __user *)regs->nip);
                        pagefault_enable();
                } else {
                        ret = probe_kernel_address((void *)regs->nip, inst);