Am Dienstag, den 04.12.2018, 14:27 +0100 schrieb Stefan Agner: > The custom fault handler is currently only meant to handle kernel > mode bus faults. Exit in case the abort happened in user mode. > > Signed-off-by: Stefan Agner <[email protected]>
Reviewed-by: Lucas Stach <[email protected]> > --- > drivers/pci/controller/dwc/pci-imx6.c | 10 ++++++++-- > 1 file changed, 8 insertions(+), 2 deletions(-) > > diff --git a/drivers/pci/controller/dwc/pci-imx6.c > b/drivers/pci/controller/dwc/pci-imx6.c > index 69f86234f7c0..54a29e441303 100644 > --- a/drivers/pci/controller/dwc/pci-imx6.c > +++ b/drivers/pci/controller/dwc/pci-imx6.c > @@ -270,8 +270,14 @@ static int imx6q_pcie_abort_handler(unsigned long addr, > unsigned int fsr, struct pt_regs *regs) > { > unsigned long pc = instruction_pointer(regs); > - unsigned long instr = *(unsigned long *)pc; > - int reg = (instr >> 12) & 15; > + unsigned long instr; > + int reg; > + > + if (user_mode(regs)) > + return 1; > + > + instr = *(unsigned long *)pc; > + reg = (instr >> 12) & 15; > > /* > * If the instruction being executed was a read,
