commit cd7ec927d9cd3d2001cbbdce872bd73f6e49c986
author Bjorn Helgaas <bjorn.helgaas@hp.com> Mon Apr 28 16:34:02 2008 -0600
committer Len Brown <len.brown@intel.com> Tue Apr 29 03:22:18 2008 -0400
tree 33ed9035c8404b21848a8fff9e4cf8a70d791f3a
parent bb84b41d1a1e3ad1ebe7f91a7c97d3b6ca242e9d

PNPACPI: extend irq_flags() to set IORESOURCE_IRQ_SHAREABLE when appropriate

This simplifies IRQ resource parsing slightly by computing all the
IORESOURCE_IRQ_* flags at the same time.

This also keeps track of shareability information when parsing options
from _PRS.  Previously we ignored shareability in _PRS.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Acked-By: Rene Herman <rene.herman@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>

drivers/pnp/pnpacpi/rsparser.c

diff --git a/drivers/pnp/pnpacpi/rsparser.c b/drivers/pnp/pnpacpi/rsparser.c
index 2a47e97..a5f5e21 100644
--- a/drivers/pnp/pnpacpi/rsparser.c
+++ b/drivers/pnp/pnpacpi/rsparser.c
@@ -32,19 +32,26 @@
 /*
  * Allocated Resources
  */
-static int irq_flags(int triggering, int polarity)
+static int irq_flags(int triggering, int polarity, int shareable)
 {
+	int flags;
+
 	if (triggering == ACPI_LEVEL_SENSITIVE) {
 		if (polarity == ACPI_ACTIVE_LOW)
-			return IORESOURCE_IRQ_LOWLEVEL;
+			flags = IORESOURCE_IRQ_LOWLEVEL;
 		else
-			return IORESOURCE_IRQ_HIGHLEVEL;
+			flags = IORESOURCE_IRQ_HIGHLEVEL;
 	} else {
 		if (polarity == ACPI_ACTIVE_LOW)
-			return IORESOURCE_IRQ_LOWEDGE;
+			flags = IORESOURCE_IRQ_LOWEDGE;
 		else
-			return IORESOURCE_IRQ_HIGHEDGE;
+			flags = IORESOURCE_IRQ_HIGHEDGE;
 	}
+
+	if (shareable)
+		flags |= IORESOURCE_IRQ_SHAREABLE;
+
+	return flags;
 }
 
 static void decode_irq_flags(int flag, int *triggering, int *polarity)
@@ -110,16 +117,13 @@
 	}
 
 	res->irq_resource[i].flags = IORESOURCE_IRQ;	// Also clears _UNSET flag
-	res->irq_resource[i].flags |= irq_flags(triggering, polarity);
+	res->irq_resource[i].flags |= irq_flags(triggering, polarity, shareable);
 	irq = acpi_register_gsi(gsi, triggering, polarity);
 	if (irq < 0) {
 		res->irq_resource[i].flags |= IORESOURCE_DISABLED;
 		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);
@@ -441,7 +445,7 @@
 	for (i = 0; i < p->interrupt_count; i++)
 		if (p->interrupts[i])
 			__set_bit(p->interrupts[i], irq->map);
-	irq->flags = irq_flags(p->triggering, p->polarity);
+	irq->flags = irq_flags(p->triggering, p->polarity, p->sharable);
 
 	pnp_register_irq_resource(option, irq);
 }
@@ -461,7 +465,7 @@
 	for (i = 0; i < p->interrupt_count; i++)
 		if (p->interrupts[i])
 			__set_bit(p->interrupts[i], irq->map);
-	irq->flags = irq_flags(p->triggering, p->polarity);
+	irq->flags = irq_flags(p->triggering, p->polarity, p->sharable);
 
 	pnp_register_irq_resource(option, irq);
 }