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-rw-r--r--drivers/pnp/interface.c2
-rw-r--r--drivers/pnp/manager.c9
-rw-r--r--drivers/pnp/quirks.c71
-rw-r--r--include/linux/ioport.h1
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)
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