[PATCH] fsl_pci: Correct fsl_pci_mcheck_exception

[Leo Li]

> -----Original Message-----
> From: Joakim Tjernlund [mailto:Joakim.Tjernlund at infinera.com]
> Sent: Tuesday, November 21, 2017 11:17 AM
> To: Leo Li <leoyang.li at nxp.com>; York Sun <york.sun at nxp.com>
> Cc: linuxppc-dev at lists.ozlabs.org
> Subject: Re: [PATCH] fsl_pci: Correct fsl_pci_mcheck_exception
> 
> On Wed, 2017-09-06 at 19:19 +0000, Leo Li wrote:
> > > -----Original Message-----
> > > From: York Sun
> > > Sent: Wednesday, September 06, 2017 10:34 AM
> > > To: Leo Li <leoyang.li at nxp.com>
> > > Cc: Joakim Tjernlund <Joakim.Tjernlund at infinera.com>; linuxppc-dev
> > > linuxppc- dev <linuxppc-dev at lists.ozlabs.org>
> > > Subject: Re: [PATCH] fsl_pci: Correct fsl_pci_mcheck_exception
> > >
> > > On 09/05/2017 04:59 AM, Joakim Tjernlund wrote:
> > > > 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 at infinera.com>
> > > > ---
> > > >   arch/powerpc/sysdev/fsl_pci.c | 2 +-
> > > >   1 file changed, 1 insertion(+), 1 deletion(-)
> > > >
> > > > diff --git a/arch/powerpc/sysdev/fsl_pci.c
> > > > b/arch/powerpc/sysdev/fsl_pci.c index 7c8b779c329a..9e64c12dff6a
> > > > 100644
> > > > --- a/arch/powerpc/sysdev/fsl_pci.c
> > > > +++ b/arch/powerpc/sysdev/fsl_pci.c
> > > > @@ -996,7 +996,7 @@ 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(regs->nip, inst);
> > > >
> > >
> > > Leo,
> > >
> > > Can you take a look, or assign it to someone who is familiar with this
> code?
> >
> > Acked-by: Li Yang <leoyang.li at nxp.com>
> >
> > Regards,
> > Leo
> 
> I think this is forgotten, cannot se it in Linus tree.

Hi Scott,

Could you help to review this patch and pick it up?  Thanks.

Regards,
Leo