diff options
| author |   Bjorn Helgaas <bjorn.helgaas@hp.com> | 2006-07-03 00:24:10 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2006-07-03 15:26:58 -0700 |
| commit | c32928c579d88acd43981b59e86900da65f40762 (patch) | |
| tree | c7f89b713f1573d5b78a312869b2fa019d547222 | |
| parent | [PATCH] uml build fix (diff) | |
| download | linux-dev-c32928c579d88acd43981b59e86900da65f40762.tar.xz linux-dev-c32928c579d88acd43981b59e86900da65f40762.zip | |
[PATCH] PNPACPI: support shareable interrupts
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@hp.com>
Cc: Adam Belay <ambx1@neo.rr.com>
Cc: Matthieu Castet <castet.matthieu@free.fr>
Cc: Li Shaohua <shaohua.li@intel.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | drivers/pnp/pnpacpi/rsparser.c | 11 | ||||
| -rw-r--r-- | include/linux/ioport.h | 1 |
2 files changed, 9 insertions, 3 deletions
diff --git a/drivers/pnp/pnpacpi/rsparser.c b/drivers/pnp/pnpacpi/rsparser.c index 3a4a644c2686..212268881857 100644 --- a/drivers/pnp/pnpacpi/rsparser.c +++ b/drivers/pnp/pnpacpi/rsparser.c @@ -74,7 +74,7 @@ static void decode_irq_flags(int flag, int *triggering, int *polarity) 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 @@ pnpacpi_parse_allocated_irqresource(struct pnp_resource_table *res, u32 gsi, 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); @@ -194,7 +197,8 @@ static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res, 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; @@ -255,7 +259,8 @@ static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res, 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; diff --git a/include/linux/ioport.h b/include/linux/ioport.h index 87a9fc039b47..5612dfeeae50 100644 --- a/include/linux/ioport.h +++ b/include/linux/ioport.h @@ -55,6 +55,7 @@ struct resource_list { #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) |