1 files changed, 29 insertions, 10 deletions

diff --git a/drivers/pnp/pnpacpi/rsparser.c b/drivers/pnp/pnpacpi/rsparser.c
index cd0a204d96d1..3c5eb374adf8 100644
--- a/drivers/pnp/pnpacpi/rsparser.c
+++ b/drivers/pnp/pnpacpi/rsparser.c
@@ -75,6 +75,7 @@ static void pnpacpi_parse_allocated_irqresource(struct pnp_resource_table *res,
 {
         int i = 0;
         int irq;
+        int p, t;
 
         if (!valid_IRQ(gsi))
                 return;
@@ -82,18 +83,27 @@ static void pnpacpi_parse_allocated_irqresource(struct pnp_resource_table *res,
         while (!(res->irq_resource[i].flags & IORESOURCE_UNSET) &&
                i < PNP_MAX_IRQ)
                 i++;
-        if (i >= PNP_MAX_IRQ)
+        if (i >= PNP_MAX_IRQ) {
+                printk(KERN_ERR "pnpacpi: exceeded the max number of IRQ "
+                                "resources: %d \n", PNP_MAX_IRQ);
                 return;
-
-#ifdef CONFIG_X86
-        if (gsi < 16 && (triggering != ACPI_EDGE_SENSITIVE ||
-                                polarity != ACPI_ACTIVE_HIGH)) {
-                pnp_warn("BIOS BUG: legacy PNP IRQ %d should be edge trigger, "
-                                "active high", gsi);
-                triggering = ACPI_EDGE_SENSITIVE;
-                polarity = ACPI_ACTIVE_HIGH;
         }
-#endif
+        /*
+         * in IO-APIC mode, use overrided attribute. Two reasons:
+         * 1. BIOS bug in DSDT
+         * 2. BIOS uses IO-APIC mode Interrupt Source Override
+         */
+        if (!acpi_get_override_irq(gsi, &t, &p)) {
+                t = t ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE;
+                p = p ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH;
+
+                if (triggering != t || polarity != p) {
+                        pnp_warn("IRQ %d override to %s, %s",
+                                gsi, t ? "edge":"level", p ? "low":"high");
+                        triggering = t;
+                        polarity = p;
+                }
+        }
 
         res->irq_resource[i].flags = IORESOURCE_IRQ;    // Also clears _UNSET flag
         res->irq_resource[i].flags |= irq_flags(triggering, polarity);
@@ -173,6 +183,9 @@ static void pnpacpi_parse_allocated_dmaresource(struct pnp_resource_table *res,
                 }
                 res->dma_resource[i].start = dma;
                 res->dma_resource[i].end = dma;
+        } else {
+                printk(KERN_ERR "pnpacpi: exceeded the max number of DMA "
+                                "resources: %d \n", PNP_MAX_DMA);
         }
 }
 
@@ -194,6 +207,9 @@ static void pnpacpi_parse_allocated_ioresource(struct pnp_resource_table *res,
                 }
                 res->port_resource[i].start = io;
                 res->port_resource[i].end = io + len - 1;
+        } else {
+                printk(KERN_ERR "pnpacpi: exceeded the max number of IO "
+                                "resources: %d \n", PNP_MAX_PORT);
         }
 }
 
@@ -217,6 +233,9 @@ static void pnpacpi_parse_allocated_memresource(struct pnp_resource_table *res,
 
                 res->mem_resource[i].start = mem;
                 res->mem_resource[i].end = mem + len - 1;
+        } else {
+                printk(KERN_ERR "pnpacpi: exceeded the max number of mem "
+                                "resources: %d\n", PNP_MAX_MEM);
         }
 }