4.12-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Maciej W. Rozycki <ma...@linux-mips.org>

commit e5f5a5b06e51a36f6ddf31a4a485358263953a3d upstream.

Correct a commit 515a6393dbac ("MIPS: kernel: proc: Add MIPS R6 support
to /proc/cpuinfo") regression that caused MIPS I systems to show no ISA
levels supported in /proc/cpuinfo, e.g.:

system type             : Digital DECstation 2100/3100
machine                 : Unknown
processor               : 0
cpu model               : R3000 V2.0  FPU V2.0
BogoMIPS                : 10.69
wait instruction        : no
microsecond timers      : no
tlb_entries             : 64
extra interrupt vector  : no
hardware watchpoint     : no
isa                     :
ASEs implemented        :
shadow register sets    : 1
kscratch registers      : 0
package                 : 0
core                    : 0
VCED exceptions         : not available
VCEI exceptions         : not available

and similarly exclude `mips1' from the ISA list for any processors below
MIPSr1.  This is because the condition to show `mips1' on has been made
`cpu_has_mips_r1' rather than newly-introduced `cpu_has_mips_1'.  Use
the correct condition then.

Fixes: 515a6393dbac ("MIPS: kernel: proc: Add MIPS R6 support to /proc/cpuinfo")
Signed-off-by: Maciej W. Rozycki <ma...@linux-mips.org>
Reviewed-by: James Hogan <james.ho...@imgtec.com>
Cc: linux-m...@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16758/
Signed-off-by: Ralf Baechle <r...@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 arch/mips/kernel/proc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/mips/kernel/proc.c
+++ b/arch/mips/kernel/proc.c
@@ -83,7 +83,7 @@ static int show_cpuinfo(struct seq_file
        }
 
        seq_printf(m, "isa\t\t\t:"); 
-       if (cpu_has_mips_r1)
+       if (cpu_has_mips_1)
                seq_printf(m, " mips1");
        if (cpu_has_mips_2)
                seq_printf(m, "%s", " mips2");


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