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powerpc/fsl_pci: Correct fsl_pci_mcheck_exception

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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>
This commit is contained in:
Joakim Tjernlund 2017-09-05 13:59:43 +02:00 committed by Scott Wood
parent f2ac428e0e
commit bb8651e5ce
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/sysdev/fsl_pci.c
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@ -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);