1 files changed, 60 insertions, 12 deletions

diff --git a/include/linux/pnp.h b/include/linux/pnp.h
index 63b128d512fb..8b607aecd959 100644
--- a/include/linux/pnp.h
+++ b/include/linux/pnp.h
@@ -40,19 +40,31 @@ static inline resource_size_t pnp_resource_len(struct resource *res)
 static inline resource_size_t pnp_port_start(struct pnp_dev *dev,
                                              unsigned int bar)
 {
-        return pnp_get_resource(dev, IORESOURCE_IO, bar)->start;
+        struct resource *res = pnp_get_resource(dev, IORESOURCE_IO, bar);
+
+        if (pnp_resource_valid(res))
+                return res->start;
+        return 0;
 }
 
 static inline resource_size_t pnp_port_end(struct pnp_dev *dev,
                                            unsigned int bar)
 {
-        return pnp_get_resource(dev, IORESOURCE_IO, bar)->end;
+        struct resource *res = pnp_get_resource(dev, IORESOURCE_IO, bar);
+
+        if (pnp_resource_valid(res))
+                return res->end;
+        return 0;
 }
 
 static inline unsigned long pnp_port_flags(struct pnp_dev *dev,
                                            unsigned int bar)
 {
-        return pnp_get_resource(dev, IORESOURCE_IO, bar)->flags;
+        struct resource *res = pnp_get_resource(dev, IORESOURCE_IO, bar);
+
+        if (pnp_resource_valid(res))
+                return res->flags;
+        return IORESOURCE_IO | IORESOURCE_AUTO | IORESOURCE_UNSET;
 }
 
 static inline int pnp_port_valid(struct pnp_dev *dev, unsigned int bar)
@@ -63,25 +75,41 @@ static inline int pnp_port_valid(struct pnp_dev *dev, unsigned int bar)
 static inline resource_size_t pnp_port_len(struct pnp_dev *dev,
                                            unsigned int bar)
 {
-        return pnp_resource_len(pnp_get_resource(dev, IORESOURCE_IO, bar));
+        struct resource *res = pnp_get_resource(dev, IORESOURCE_IO, bar);
+
+        if (pnp_resource_valid(res))
+                return pnp_resource_len(res);
+        return 0;
 }
 
 
 static inline resource_size_t pnp_mem_start(struct pnp_dev *dev,
                                             unsigned int bar)
 {
-        return pnp_get_resource(dev, IORESOURCE_MEM, bar)->start;
+        struct resource *res = pnp_get_resource(dev, IORESOURCE_MEM, bar);
+
+        if (pnp_resource_valid(res))
+                return res->start;
+        return 0;
 }
 
 static inline resource_size_t pnp_mem_end(struct pnp_dev *dev,
                                           unsigned int bar)
 {
-        return pnp_get_resource(dev, IORESOURCE_MEM, bar)->end;
+        struct resource *res = pnp_get_resource(dev, IORESOURCE_MEM, bar);
+
+        if (pnp_resource_valid(res))
+                return res->end;
+        return 0;
 }
 
 static inline unsigned long pnp_mem_flags(struct pnp_dev *dev, unsigned int bar)
 {
-        return pnp_get_resource(dev, IORESOURCE_MEM, bar)->flags;
+        struct resource *res = pnp_get_resource(dev, IORESOURCE_MEM, bar);
+
+        if (pnp_resource_valid(res))
+                return res->flags;
+        return IORESOURCE_MEM | IORESOURCE_AUTO | IORESOURCE_UNSET;
 }
 
 static inline int pnp_mem_valid(struct pnp_dev *dev, unsigned int bar)
@@ -92,18 +120,30 @@ static inline int pnp_mem_valid(struct pnp_dev *dev, unsigned int bar)
 static inline resource_size_t pnp_mem_len(struct pnp_dev *dev,
                                           unsigned int bar)
 {
-        return pnp_resource_len(pnp_get_resource(dev, IORESOURCE_MEM, bar));
+        struct resource *res = pnp_get_resource(dev, IORESOURCE_MEM, bar);
+
+        if (pnp_resource_valid(res))
+                return pnp_resource_len(res);
+        return 0;
 }
 
 
 static inline resource_size_t pnp_irq(struct pnp_dev *dev, unsigned int bar)
 {
-        return pnp_get_resource(dev, IORESOURCE_IRQ, bar)->start;
+        struct resource *res = pnp_get_resource(dev, IORESOURCE_IRQ, bar);
+
+        if (pnp_resource_valid(res))
+                return res->start;
+        return -1;
 }
 
 static inline unsigned long pnp_irq_flags(struct pnp_dev *dev, unsigned int bar)
 {
-        return pnp_get_resource(dev, IORESOURCE_IRQ, bar)->flags;
+        struct resource *res = pnp_get_resource(dev, IORESOURCE_IRQ, bar);
+
+        if (pnp_resource_valid(res))
+                return res->flags;
+        return IORESOURCE_IRQ | IORESOURCE_AUTO | IORESOURCE_UNSET;
 }
 
 static inline int pnp_irq_valid(struct pnp_dev *dev, unsigned int bar)
@@ -114,12 +154,20 @@ static inline int pnp_irq_valid(struct pnp_dev *dev, unsigned int bar)
 
 static inline resource_size_t pnp_dma(struct pnp_dev *dev, unsigned int bar)
 {
-        return pnp_get_resource(dev, IORESOURCE_DMA, bar)->start;
+        struct resource *res = pnp_get_resource(dev, IORESOURCE_DMA, bar);
+
+        if (pnp_resource_valid(res))
+                return res->start;
+        return -1;
 }
 
 static inline unsigned long pnp_dma_flags(struct pnp_dev *dev, unsigned int bar)
 {
-        return pnp_get_resource(dev, IORESOURCE_DMA, bar)->flags;
+        struct resource *res = pnp_get_resource(dev, IORESOURCE_DMA, bar);
+
+        if (pnp_resource_valid(res))
+                return res->flags;
+        return IORESOURCE_DMA | IORESOURCE_AUTO | IORESOURCE_UNSET;
 }
 
 static inline int pnp_dma_valid(struct pnp_dev *dev, unsigned int bar)