3 files changed, 31 insertions, 19 deletions

diff --git a/drivers/pnp/pnpacpi/rsparser.c b/drivers/pnp/pnpacpi/rsparser.c
index 0201c8adfda7..46c791adb894 100644
--- a/drivers/pnp/pnpacpi/rsparser.c
+++ b/drivers/pnp/pnpacpi/rsparser.c
@@ -50,15 +50,17 @@ 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(int flag, int *triggering, int *polarity)
+static void decode_irq_flags(struct pnp_dev *dev, int flags, int *triggering,
+                             int *polarity, int *shareable)
 {
-        switch (flag) {
+        switch (flags & (IORESOURCE_IRQ_LOWLEVEL | IORESOURCE_IRQ_HIGHLEVEL |
+                         IORESOURCE_IRQ_LOWEDGE  | IORESOURCE_IRQ_HIGHEDGE)) {
         case IORESOURCE_IRQ_LOWLEVEL:
                 *triggering = ACPI_LEVEL_SENSITIVE;
                 *polarity = ACPI_ACTIVE_LOW;
@@ -75,7 +77,18 @@ static void decode_irq_flags(int flag, int *triggering, int *polarity)
                 *triggering = ACPI_EDGE_SENSITIVE;
                 *polarity = ACPI_ACTIVE_HIGH;
                 break;
+        default:
+                dev_err(&dev->dev, "can't encode invalid IRQ mode %#x\n",
+                        flags);
+                *triggering = ACPI_EDGE_SENSITIVE;
+                *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,
@@ -742,6 +755,9 @@ static acpi_status pnpacpi_type_resources(struct acpi_resource *res, void *data)
         if (pnpacpi_supported_resource(res)) {
                 (*resource)->type = res->type;
                 (*resource)->length = sizeof(struct acpi_resource);
+                if (res->type == ACPI_RESOURCE_TYPE_IRQ)
+                        (*resource)->data.irq.descriptor_length =
+                                        res->data.irq.descriptor_length;
                 (*resource)++;
         }
 
@@ -788,22 +804,21 @@ 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(p->flags & IORESOURCE_BITS, &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;
 
-        dev_dbg(&dev->dev, "  encode irq %d %s %s %s\n", (int) p->start,
+        dev_dbg(&dev->dev, "  encode irq %d %s %s %s (%d-byte descriptor)\n",
+                (int) p->start,
                 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
                 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
-                irq->sharable == ACPI_SHARED ? "shared" : "exclusive");
+                irq->sharable == ACPI_SHARED ? "shared" : "exclusive",
+                irq->descriptor_length);
 }
 
 static void pnpacpi_encode_ext_irq(struct pnp_dev *dev,
@@ -811,16 +826,13 @@ 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(p->flags & IORESOURCE_BITS, &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;
 
diff --git a/drivers/pnp/quirks.c b/drivers/pnp/quirks.c
index e2b7de4cb05e..1ff3bb585ab2 100644
--- a/drivers/pnp/quirks.c
+++ b/drivers/pnp/quirks.c
@@ -286,7 +286,7 @@ static void quirk_system_pci_resources(struct pnp_dev *dev)
                                         pci_name(pdev), i,
                                         (unsigned long long) pci_start,
                                         (unsigned long long) pci_end);
-                                res->flags = 0;
+                                res->flags |= IORESOURCE_DISABLED;
                         }
                 }
         }
diff --git a/drivers/pnp/system.c b/drivers/pnp/system.c
index 9c2496dbeee4..cf4e07b01d48 100644
--- a/drivers/pnp/system.c
+++ b/drivers/pnp/system.c
@@ -81,7 +81,7 @@ static void reserve_resources_of_dev(struct pnp_dev *dev)
         }
 
         for (i = 0; (res = pnp_get_resource(dev, IORESOURCE_MEM, i)); i++) {
-                if (res->flags & IORESOURCE_UNSET)
+                if (res->flags & (IORESOURCE_UNSET | IORESOURCE_DISABLED))
                         continue;
 
                 reserve_range(dev, res->start, res->end, 0);