diff options
Diffstat (limited to 'drivers/pnp/pnpacpi/rsparser.c')
| -rw-r--r-- | drivers/pnp/pnpacpi/rsparser.c | 39 |
1 files changed, 29 insertions, 10 deletions
diff --git a/drivers/pnp/pnpacpi/rsparser.c b/drivers/pnp/pnpacpi/rsparser.c index cd0a204d96d..3c5eb374adf 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); } } |