ACPI supplies a "shareable" indication, but PNPACPI ignores it.
If a PNP device uses a shared interrupt, request_irq() fails
because the PNP driver can't tell whether to supply SA_SHIRQ.
This patch allows PNP drivers to test
(pnp_irq_flags(dev, 0) & IORESOURCE_IRQ_SHAREABLE)
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@xxxxxx>
Index: work-mm7/include/linux/ioport.h
===================================================================
--- work-mm7.orig/include/linux/ioport.h 2006-06-30 11:52:21.000000000 -0600
+++ work-mm7/include/linux/ioport.h 2006-06-30 12:18:41.000000000 -0600
@@ -55,6 +55,7 @@
#define IORESOURCE_IRQ_LOWEDGE (1<<1)
#define IORESOURCE_IRQ_HIGHLEVEL (1<<2)
#define IORESOURCE_IRQ_LOWLEVEL (1<<3)
+#define IORESOURCE_IRQ_SHAREABLE (1<<4)
/* ISA PnP DMA specific bits (IORESOURCE_BITS) */
#define IORESOURCE_DMA_TYPE_MASK (3<<0)
Index: work-mm7/drivers/pnp/pnpacpi/rsparser.c
===================================================================
--- work-mm7.orig/drivers/pnp/pnpacpi/rsparser.c 2006-06-30 11:52:18.000000000 -0600
+++ work-mm7/drivers/pnp/pnpacpi/rsparser.c 2006-06-30 12:18:41.000000000 -0600
@@ -74,7 +74,7 @@
static void
pnpacpi_parse_allocated_irqresource(struct pnp_resource_table *res, u32 gsi,
- int triggering, int polarity)
+ int triggering, int polarity, int shareable)
{
int i = 0;
int irq;
@@ -95,6 +95,9 @@
return;
}
+ if (shareable)
+ res->irq_resource[i].flags |= IORESOURCE_IRQ_SHAREABLE;
+
res->irq_resource[i].start = irq;
res->irq_resource[i].end = irq;
pcibios_penalize_isa_irq(irq, 1);
@@ -197,7 +200,8 @@
pnpacpi_parse_allocated_irqresource(res_table,
res->data.irq.interrupts[i],
res->data.irq.triggering,
- res->data.irq.polarity);
+ res->data.irq.polarity,
+ res->data.irq.sharable);
}
break;
@@ -263,7 +267,8 @@
pnpacpi_parse_allocated_irqresource(res_table,
res->data.extended_irq.interrupts[i],
res->data.extended_irq.triggering,
- res->data.extended_irq.polarity);
+ res->data.extended_irq.polarity,
+ res->data.extended_irq.sharable);
}
break;
-
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