target/linux/generic/patches-4.4/100-MIPS-fix-MT_SMP-cacheflush.patch

   1 Fix crash on cache flush with the MT_SMP variant
   2
   3 Signed-off-by: Felix Fietkau <nbd@nbd.name>
   4
   5 --- a/arch/mips/mm/c-r4k.c
   6 +++ b/arch/mips/mm/c-r4k.c
   7 @@ -60,8 +60,10 @@ static inline void r4k_on_each_cpu(void
   8          * to restrict that call when a CM is not present because both
   9          * CM-based SMP protocols (CMP & CPS) restrict index-based cache ops.
  10          */
  11 +#ifndef CONFIG_MIPS_MT_SMP
  12         if (!mips_cm_present())
  13                 smp_call_function_many(&cpu_foreign_map, func, info, 1);
  14 +#endif
  15         func(info);
  16         preempt_enable();
  17  }