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Commit feb11e8a authored by Finn Thain's avatar Finn Thain Committed by Geert Uytterhoeven
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m68k/mac: fix baboon irq disable and shutdown 



The baboon_disabled hack is broken because it is missing an irq shutdown method. So releasing a Baboon irq kills the other Baboon irqs. But we don't really need this hack because we don't have media bay support and TREX uses a NuBus IRQ. Remove it.

Signed-off-by: default avatarFinn Thain <fthain@telegraphics.com.au>
Signed-off-by: default avatarGeert Uytterhoeven <geert@linux-m68k.org>
parent da3fb3c9

arch/m68k/mac/baboon.c

+8 −14
Original line number Diff line number Diff line
@@ -18,7 +18,6 @@ 


int baboon_present;

static volatile struct baboon *baboon;

static unsigned char baboon_disabled;



#if 0

extern int macide_ack_intr(struct ata_channel *);
@@ -84,37 +83,32 @@ static void baboon_irq(unsigned int irq, struct irq_desc *desc) 


void __init baboon_register_interrupts(void)

{

	baboon_disabled = 0;

	irq_set_chained_handler(IRQ_NUBUS_C, baboon_irq);

}



/*

 * The means for masking individual baboon interrupts remains a mystery, so

 * enable the umbrella interrupt only when no baboon interrupt is disabled.

 * The means for masking individual Baboon interrupts remains a mystery.

 * However, since we only use the IDE IRQ, we can just enable/disable all

 * Baboon interrupts. If/when we handle more than one Baboon IRQ, we must

 * either figure out how to mask them individually or else implement the

 * same workaround that's used for NuBus slots (see nubus_disabled and

 * via_nubus_irq_shutdown).

 */



void baboon_irq_enable(int irq)

{

	int irq_idx = IRQ_IDX(irq);



#ifdef DEBUG_IRQUSE

	printk("baboon_irq_enable(%d)\n", irq);

#endif



	baboon_disabled &= ~(1 << irq_idx);

	if (!baboon_disabled)

	mac_irq_enable(irq_get_irq_data(IRQ_NUBUS_C));

}



void baboon_irq_disable(int irq)

{

	int irq_idx = IRQ_IDX(irq);



#ifdef DEBUG_IRQUSE

	printk("baboon_irq_disable(%d)\n", irq);

#endif



	baboon_disabled |= 1 << irq_idx;

	if (baboon_disabled)

	mac_irq_disable(irq_get_irq_data(IRQ_NUBUS_C));

}