resource/PCI: mark struct resource as const

Now that we return the new resource start position, there is no
need to update "struct resource" inside the align function.
Therefore, mark the struct resource as const.

Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: NDominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>

arch/alpha/kernel/pci.c

@@ -127,7 +127,7 @@ DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, pcibios_fixup_final);
 #define GB			(1024*MB)
 
 resource_size_t
-pcibios_align_resource(void *data, struct resource *res,
+pcibios_align_resource(void *data, const struct resource *res,
 		       resource_size_t size, resource_size_t align)
 {
 	struct pci_dev *dev = data;

arch/arm/kernel/bios32.c

@@ -616,7 +616,7 @@ char * __init pcibios_setup(char *str)
  * but we want to try to avoid allocating at 0x2900-0x2bff
  * which might be mirrored at 0x0100-0x03ff..
  */
-resource_size_t pcibios_align_resource(void *data, struct resource *res,
+resource_size_t pcibios_align_resource(void *data, const struct resource *res,
 				resource_size_t size, resource_size_t align)
 {
 	resource_size_t start = res->start;

arch/cris/arch-v32/drivers/pci/bios.c

@@ -42,7 +42,7 @@ int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
 }
 
 resource_size_t
-pcibios_align_resource(void *data, struct resource *res,
+pcibios_align_resource(void *data, const struct resource *res,
 		       resource_size_t size, resource_size_t align)
 {
 	resource_size_t start = res->start;

arch/frv/mb93090-mb00/pci-frv.c

@@ -33,7 +33,7 @@
  * which might have be mirrored at 0x0100-0x03ff..
  */
 resource_size_t
-pcibios_align_resource(void *data, struct resource *res,
+pcibios_align_resource(void *data, const struct resource *res,
 		       resource_size_t size, resource_size_t align)
 {
 	resource_size_t start = res->start;

arch/ia64/pci/pci.c

@@ -548,7 +548,7 @@ pcibios_disable_device (struct pci_dev *dev)
 }
 
 resource_size_t
-pcibios_align_resource (void *data, struct resource *res,
+pcibios_align_resource (void *data, const struct resource *res,
 		        resource_size_t size, resource_size_t align)
 {
 	return res->start;

arch/mips/pci/pci.c

@@ -50,7 +50,7 @@ static int pci_initialized;
  * which might have be mirrored at 0x0100-0x03ff..
  */
 resource_size_t
-pcibios_align_resource(void *data, struct resource *res,
+pcibios_align_resource(void *data, const struct resource *res,
 		       resource_size_t size, resource_size_t align)
 {
 	struct pci_dev *dev = data;

arch/mips/pmc-sierra/yosemite/ht.c

@@ -345,7 +345,7 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
         return pcibios_enable_resources(dev);
 }
 
-resource_size_t pcibios_align_resource(void *data, struct resource *res,
+resource_size_t pcibios_align_resource(void *data, const struct resource *res,
 				resource_size_t size, resource_size_t align)
 {
         struct pci_dev *dev = data;

arch/mn10300/unit-asb2305/pci-asb2305.c

@@ -31,7 +31,7 @@
  * but we want to try to avoid allocating at 0x2900-0x2bff
  * which might have be mirrored at 0x0100-0x03ff..
  */
-resource_size_t pcibios_align_resource(void *data, struct resource *res,
+resource_size_t pcibios_align_resource(void *data, const struct resource *res,
 				resource_size_t size, resource_size_t align)
 {
 	resource_size_t start = res->start;

arch/parisc/kernel/pci.c

@@ -254,7 +254,7 @@ EXPORT_SYMBOL(pcibios_bus_to_resource);
  * Since we are just checking candidates, don't use any fields other
  * than res->start.
  */
-resource_size_t pcibios_align_resource(void *data, struct resource *res,
+resource_size_t pcibios_align_resource(void *data, const struct resource *res,
 				resource_size_t size, resource_size_t alignment)
 {
 	resource_size_t mask, align, start = res->start;

arch/powerpc/kernel/pci-common.c

@@ -1181,7 +1181,7 @@ static int skip_isa_ioresource_align(struct pci_dev *dev)
  * but we want to try to avoid allocating at 0x2900-0x2bff
  * which might have be mirrored at 0x0100-0x03ff..
  */
-resource_size_t pcibios_align_resource(void *data, struct resource *res,
+resource_size_t pcibios_align_resource(void *data, const struct resource *res,
 				resource_size_t size, resource_size_t align)
 {
 	struct pci_dev *dev = data;

arch/sh/drivers/pci/pci.c

@@ -148,7 +148,7 @@ void __devinit pcibios_fixup_bus(struct pci_bus *bus)
  * addresses to be allocated in the 0x000-0x0ff region
  * modulo 0x400.
  */
-resource_size_t pcibios_align_resource(void *data, struct resource *res,
+resource_size_t pcibios_align_resource(void *data, const struct resource *res,
 				resource_size_t size, resource_size_t align)
 {
 	struct pci_dev *dev = data;

arch/sparc/kernel/pci.c

@@ -722,7 +722,7 @@ void pcibios_update_irq(struct pci_dev *pdev, int irq)
 {
 }
 
-resource_size_t pcibios_align_resource(void *data, struct resource *res,
+resource_size_t pcibios_align_resource(void *data, const struct resource *res,
 				resource_size_t size, resource_size_t align)
 {
 	return res->start;

arch/sparc/kernel/pcic.c

@@ -768,7 +768,7 @@ char * __devinit pcibios_setup(char *str)
 	return str;
 }
 
-resource_size_t pcibios_align_resource(void *data, struct resource *res,
+resource_size_t pcibios_align_resource(void *data, const struct resource *res,
 				resource_size_t size, resource_size_t align)
 {
 	return res->start;

arch/x86/pci/i386.c

@@ -61,7 +61,7 @@ skip_isa_ioresource_align(struct pci_dev *dev) {
  * which might have be mirrored at 0x0100-0x03ff..
  */
 resource_size_t
-pcibios_align_resource(void *data, struct resource *res,
+pcibios_align_resource(void *data, const struct resource *res,
 			resource_size_t size, resource_size_t align)
 {
 	struct pci_dev *dev = data;

arch/xtensa/kernel/pci.c

@@ -70,8 +70,8 @@ static int pci_bus_count;
  * which might have be mirrored at 0x0100-0x03ff..
  */
 resource_size_t
-pcibios_align_resource(void *data, struct resource *res, resource_size_t size,
-    		       resource_size_t align)
+pcibios_align_resource(void *data, const struct resource *res,
+		       resource_size_t size, resource_size_t align)
 {
 	struct pci_dev *dev = data;
 	resource_size_t start = res->start;

drivers/pci/bus.c

@@ -37,7 +37,7 @@ pci_bus_alloc_resource(struct pci_bus *bus, struct resource *res,
 		resource_size_t size, resource_size_t align,
 		resource_size_t min, unsigned int type_mask,
 		resource_size_t (*alignf)(void *,
-					  struct resource *,
+					  const struct resource *,
 					  resource_size_t,
 					  resource_size_t),
 		void *alignf_data)

drivers/pcmcia/rsrc_mgr.c

@@ -114,7 +114,8 @@ struct pcmcia_align_data {
 	unsigned long	offset;
 };
 
-static resource_size_t pcmcia_align(void *align_data, struct resource *res,
+static resource_size_t pcmcia_align(void *align_data,
+				const struct resource *res,
 				resource_size_t size, resource_size_t align)
 {
 	struct pcmcia_align_data *data = align_data;

drivers/pcmcia/rsrc_nonstatic.c

@@ -534,7 +534,7 @@ struct pcmcia_align_data {
 };
 
 static resource_size_t
-pcmcia_common_align(void *align_data, struct resource *res,
+pcmcia_common_align(void *align_data, const struct resource *res,
 			resource_size_t size, resource_size_t align)
 {
 	struct pcmcia_align_data *data = align_data;
@@ -549,8 +549,8 @@ pcmcia_common_align(void *align_data, struct resource *res,
 }
 
 static resource_size_t
-pcmcia_align(void *align_data, struct resource *res, resource_size_t size,
-		resource_size_t align)
+pcmcia_align(void *align_data, const struct resource *res,
+	resource_size_t size, resource_size_t align)
 {
 	struct pcmcia_align_data *data = align_data;
 	struct resource_map *m;

include/linux/ioport.h

@@ -121,7 +121,7 @@ extern int allocate_resource(struct resource *root, struct resource *new,
 			     resource_size_t size, resource_size_t min,
 			     resource_size_t max, resource_size_t align,
 			     resource_size_t (*alignf)(void *,
-						       struct resource *,
+						       const struct resource *,
 						       resource_size_t,
 						       resource_size_t),
 			     void *alignf_data);

include/linux/pci.h

@@ -592,7 +592,7 @@ int __must_check pcibios_enable_device(struct pci_dev *, int mask);
 char *pcibios_setup(char *str);
 
 /* Used only when drivers/pci/setup.c is used */
-resource_size_t pcibios_align_resource(void *, struct resource *,
+resource_size_t pcibios_align_resource(void *, const struct resource *,
 				resource_size_t,
 				resource_size_t);
 void pcibios_update_irq(struct pci_dev *, int irq);
@@ -828,7 +828,8 @@ int __must_check pci_bus_alloc_resource(struct pci_bus *bus,
 			struct resource *res, resource_size_t size,
 			resource_size_t align, resource_size_t min,
 			unsigned int type_mask,
-			resource_size_t (*alignf)(void *, struct resource *,
+			resource_size_t (*alignf)(void *,
+						  const struct resource *,
 						  resource_size_t,
 						  resource_size_t),
 			void *alignf_data);

kernel/resource.c

@@ -304,7 +304,7 @@ static int find_resource(struct resource *root, struct resource *new,
 			 resource_size_t size, resource_size_t min,
 			 resource_size_t max, resource_size_t align,
 			 resource_size_t (*alignf)(void *,
-						   struct resource *,
+						   const struct resource *,
 						   resource_size_t,
 						   resource_size_t),
 			 void *alignf_data)
@@ -361,7 +361,7 @@ int allocate_resource(struct resource *root, struct resource *new,
 		      resource_size_t size, resource_size_t min,
 		      resource_size_t max, resource_size_t align,
 		      resource_size_t (*alignf)(void *,
-						struct resource *,
+						const struct resource *,
 						resource_size_t,
 						resource_size_t),
 		      void *alignf_data)