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pnpacpi: fix shareable IRQ encode/decode 

When we encode IRQ resources, we should use the "shareable" flag we got
from _PRS rather than guessing based on the IRQ trigger mode.

This is based on a patch by Tom Jaeger:
    http://bugzilla.kernel.org/show_bug.cgi?id=9487#c32

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Bjorn Helgaas 2008-06-09 16:52:05 -07:00 committed by Len Brown
parent e9fe9e1881
commit a993273bea
1 changed files with 13 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
drivers/pnp/pnpacpi/rsparser.c
View File

@ -50,14 +50,14 @@ static int irq_flags(int triggering, int polarity, int shareable)
flags = IORESOURCE_IRQ_HIGHEDGE;
}
if (shareable)
if (shareable == ACPI_SHARED)
flags |= IORESOURCE_IRQ_SHAREABLE;
return flags;
}
static void decode_irq_flags(struct pnp_dev *dev, int flags, int *triggering,
int *polarity)
int *polarity, int *shareable)
{
switch (flags & (IORESOURCE_IRQ_LOWLEVEL | IORESOURCE_IRQ_HIGHLEVEL |
IORESOURCE_IRQ_LOWEDGE | IORESOURCE_IRQ_HIGHEDGE)) {
@ -84,6 +84,11 @@ static void decode_irq_flags(struct pnp_dev *dev, int flags, int *triggering,
*polarity = ACPI_ACTIVE_HIGH;
break;
}
if (flags & IORESOURCE_IRQ_SHAREABLE)
*shareable = ACPI_SHARED;
else
*shareable = ACPI_EXCLUSIVE;
}
static void pnpacpi_parse_allocated_irqresource(struct pnp_dev *dev,
@ -796,15 +801,12 @@ static void pnpacpi_encode_irq(struct pnp_dev *dev,
struct resource *p)
{
struct acpi_resource_irq *irq = &resource->data.irq;
int triggering, polarity;
int triggering, polarity, shareable;
decode_irq_flags(dev, p->flags, &triggering, &polarity);
decode_irq_flags(dev, p->flags, &triggering, &polarity, &shareable);
irq->triggering = triggering;
irq->polarity = polarity;
if (triggering == ACPI_EDGE_SENSITIVE)
irq->sharable = ACPI_EXCLUSIVE;
else
irq->sharable = ACPI_SHARED;
irq->sharable = shareable;
irq->interrupt_count = 1;
irq->interrupts[0] = p->start;
@ -819,16 +821,13 @@ static void pnpacpi_encode_ext_irq(struct pnp_dev *dev,
struct resource *p)
{
struct acpi_resource_extended_irq *extended_irq = &resource->data.extended_irq;
int triggering, polarity;
int triggering, polarity, shareable;
decode_irq_flags(dev, p->flags, &triggering, &polarity);
decode_irq_flags(dev, p->flags, &triggering, &polarity, &shareable);
extended_irq->producer_consumer = ACPI_CONSUMER;
extended_irq->triggering = triggering;
extended_irq->polarity = polarity;
if (triggering == ACPI_EDGE_SENSITIVE)
extended_irq->sharable = ACPI_EXCLUSIVE;
else
extended_irq->sharable = ACPI_SHARED;
extended_irq->sharable = shareable;
extended_irq->interrupt_count = 1;
extended_irq->interrupts[0] = p->start;