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authorFinn Thain <fthain@telegraphics.com.au>2011-10-23 16:11:19 +0200
committerGeert Uytterhoeven <geert@linux-m68k.org>2011-12-10 19:52:47 +0100
commitfeb11e8a5617cd337d8a83fd9cde38dba8ef050f (patch)
tree700cb8521ef6ca3648d30f93538e3630c7f1c79d /arch/m68k/mac
parentm68k/mac: oss irq fixes (diff)
downloadlinux-feb11e8a5617cd337d8a83fd9cde38dba8ef050f.tar.xz
linux-feb11e8a5617cd337d8a83fd9cde38dba8ef050f.zip
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: Finn Thain <fthain@telegraphics.com.au> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Diffstat (limited to 'arch/m68k/mac')
-rw-r--r--arch/m68k/mac/baboon.c22
1 files changed, 8 insertions, 14 deletions
diff --git a/arch/m68k/mac/baboon.c b/arch/m68k/mac/baboon.c
index 74999685ddad..3fe0e43d44f6 100644
--- a/arch/m68k/mac/baboon.c
+++ b/arch/m68k/mac/baboon.c
@@ -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));
+ 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));
+ mac_irq_disable(irq_get_irq_data(IRQ_NUBUS_C));
}