diff options
| -rw-r--r-- | drivers/pnp/interface.c | 2 | ||||
| -rw-r--r-- | drivers/pnp/manager.c | 9 | ||||
| -rw-r--r-- | drivers/pnp/quirks.c | 71 | ||||
| -rw-r--r-- | include/linux/ioport.h | 1 |
4 files changed, 39 insertions, 44 deletions
diff --git a/drivers/pnp/interface.c b/drivers/pnp/interface.c index b09f67d..7a9fb55 100644 --- a/drivers/pnp/interface.c +++ b/drivers/pnp/interface.c @@ -90,6 +90,8 @@ static void pnp_print_irq(pnp_info_buffer_t * buffer, char *space, pnp_printf(buffer, " High-Level"); if (irq->flags & IORESOURCE_IRQ_LOWLEVEL) pnp_printf(buffer, " Low-Level"); + if (irq->flags & IORESOURCE_IRQ_OPTIONAL) + pnp_printf(buffer, " (optional)"); pnp_printf(buffer, "\n"); } diff --git a/drivers/pnp/manager.c b/drivers/pnp/manager.c index 7ea9e1e..a20accb 100644 --- a/drivers/pnp/manager.c +++ b/drivers/pnp/manager.c @@ -153,6 +153,15 @@ static int pnp_assign_irq(struct pnp_dev *dev, struct pnp_irq *rule, int idx) goto __add; } } + + if (rule->flags & IORESOURCE_IRQ_OPTIONAL) { + res->start = -1; + res->end = -1; + res->flags |= IORESOURCE_DISABLED; + dev_dbg(&dev->dev, " irq %d disabled (optional)\n", idx); + goto __add; + } + dev_dbg(&dev->dev, " couldn't assign irq %d\n", idx); return -EBUSY; diff --git a/drivers/pnp/quirks.c b/drivers/pnp/quirks.c index 48e6017..e8515ce 100644 --- a/drivers/pnp/quirks.c +++ b/drivers/pnp/quirks.c @@ -121,34 +121,46 @@ static struct pnp_option *quirk_isapnp_mpu_options(struct pnp_dev *dev) struct pnp_option *res; /* - * Build a functional IRQ-less variant of each MPU option. + * Build a functional IRQ-optional variant of each MPU option. */ for (res = dev->dependent; res; res = res->next) { struct pnp_option *curr; struct pnp_port *port; - struct pnp_port *copy; + struct pnp_port *copy_port; + struct pnp_irq *irq; + struct pnp_irq *copy_irq; port = res->port; - if (!port || !res->irq) + irq = res->irq; + if (!port || !irq) continue; - copy = pnp_alloc(sizeof *copy); - if (!copy) + copy_port = pnp_alloc(sizeof *copy_port); + if (!copy_port) + break; + + copy_irq = pnp_alloc(sizeof *copy_irq); + if (!copy_irq) { + kfree(copy_port); break; + } + + *copy_port = *port; + copy_port->next = NULL; - copy->min = port->min; - copy->max = port->max; - copy->align = port->align; - copy->size = port->size; - copy->flags = port->flags; + *copy_irq = *irq; + copy_irq->flags |= IORESOURCE_IRQ_OPTIONAL; + copy_irq->next = NULL; curr = pnp_build_option(PNP_RES_PRIORITY_FUNCTIONAL); if (!curr) { - kfree(copy); + kfree(copy_port); + kfree(copy_irq); break; } - curr->port = copy; + curr->port = copy_port; + curr->irq = copy_irq; if (prev) prev->next = curr; @@ -157,7 +169,7 @@ static struct pnp_option *quirk_isapnp_mpu_options(struct pnp_dev *dev) prev = curr; } if (head) - dev_info(&dev->dev, "adding IRQ-less MPU options\n"); + dev_info(&dev->dev, "adding IRQ-optional MPU options\n"); return head; } @@ -167,10 +179,6 @@ static void quirk_ad1815_mpu_resources(struct pnp_dev *dev) struct pnp_option *res; struct pnp_irq *irq; - /* - * Distribute the independent IRQ over the dependent options - */ - res = dev->independent; if (!res) return; @@ -179,33 +187,8 @@ static void quirk_ad1815_mpu_resources(struct pnp_dev *dev) if (!irq || irq->next) return; - res = dev->dependent; - if (!res) - return; - - while (1) { - struct pnp_irq *copy; - - copy = pnp_alloc(sizeof *copy); - if (!copy) - break; - - bitmap_copy(copy->map.bits, irq->map.bits, PNP_IRQ_NR); - copy->flags = irq->flags; - - copy->next = res->irq; /* Yes, this is NULL */ - res->irq = copy; - - if (!res->next) - break; - res = res->next; - } - kfree(irq); - - res->next = quirk_isapnp_mpu_options(dev); - - res = dev->independent; - res->irq = NULL; + irq->flags |= IORESOURCE_IRQ_OPTIONAL; + dev_info(&dev->dev, "made independent IRQ optional\n"); } static void quirk_isapnp_mpu_resources(struct pnp_dev *dev) diff --git a/include/linux/ioport.h b/include/linux/ioport.h index 39db059..2cd07cc 100644 --- a/include/linux/ioport.h +++ b/include/linux/ioport.h @@ -59,6 +59,7 @@ struct resource_list { #define IORESOURCE_IRQ_HIGHLEVEL (1<<2) #define IORESOURCE_IRQ_LOWLEVEL (1<<3) #define IORESOURCE_IRQ_SHAREABLE (1<<4) +#define IORESOURCE_IRQ_OPTIONAL (1<<5) /* PnP DMA specific bits (IORESOURCE_BITS) */ #define IORESOURCE_DMA_TYPE_MASK (3<<0) |
