[PATCH 4.9 19/31] MIPS: Switch to the irq_stack in interrupts

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Matt Redfearn commit dda45f701c9d7ad4ac0bb446e3a96f6df9a468d9 upstream. When enterring interrupt context via handle_int or except_vec_vi, switch to the irq_stack of

[PATCH 4.9 19/31] MIPS: Switch to the irq_stack in interrupts

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Matt Redfearn commit dda45f701c9d7ad4ac0bb446e3a96f6df9a468d9 upstream. When enterring interrupt context via handle_int or except_vec_vi, switch to the irq_stack of the current CPU if it is