[MIPS] IP27: shutdown_bridge_irq: don't free irq.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

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arch/mips/sgi-ip27/ip27-irq.c
··· 292 292 static void shutdown_bridge_irq(unsigned int irq) 293 293 { 294 294 struct bridge_controller *bc = IRQ_TO_BRIDGE(irq); 295 - struct hub_data *hub = hub_data(cpu_to_node(bc->irq_cpu)); 296 295 bridge_t *bridge = bc->base; 297 296 int pin, swlevel; 298 297 cpuid_t cpu; ··· 305 306 */ 306 307 swlevel = find_level(&cpu, irq); 307 308 intr_disconnect_level(cpu, swlevel); 308 - 309 - __clear_bit(swlevel, hub->irq_alloc_mask); 310 309 311 310 bridge->b_int_enable &= ~(1 << pin); 312 311 bridge->b_wid_tflush;