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: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

21 files changed, 28 insertions, 26 deletions

diff --git a/arch/alpha/kernel/pci.c b/arch/alpha/kernel/pci.c
index 5cf111ed851cb..c9ab94ee1ca81 100644
--- a/arch/alpha/kernel/pci.c
+++ b/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;
diff --git a/arch/arm/kernel/bios32.c b/arch/arm/kernel/bios32.c
index a7c85f84f06cb..bd397e0b663e4 100644
--- a/arch/arm/kernel/bios32.c
+++ b/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;
diff --git a/arch/cris/arch-v32/drivers/pci/bios.c b/arch/cris/arch-v32/drivers/pci/bios.c
index 5811e2f8945c8..d4b9c36ddc0fb 100644
--- a/arch/cris/arch-v32/drivers/pci/bios.c
+++ b/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;
diff --git a/arch/frv/mb93090-mb00/pci-frv.c b/arch/frv/mb93090-mb00/pci-frv.c
index c947aa43f2a93..1ed15d7fea20c 100644
--- a/arch/frv/mb93090-mb00/pci-frv.c
+++ b/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;
diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index ef574cd311d1a..783c83bb2b49b 100644
--- a/arch/ia64/pci/pci.c
+++ b/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;
diff --git a/arch/mips/pci/pci.c b/arch/mips/pci/pci.c
index 9085988f7cf3d..f87f5e188fa6c 100644
--- a/arch/mips/pci/pci.c
+++ b/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;
diff --git a/arch/mips/pmc-sierra/yosemite/ht.c b/arch/mips/pmc-sierra/yosemite/ht.c
index 5e410087b6284..fd22597edb64b 100644
--- a/arch/mips/pmc-sierra/yosemite/ht.c
+++ b/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;
diff --git a/arch/mn10300/unit-asb2305/pci-asb2305.c b/arch/mn10300/unit-asb2305/pci-asb2305.c
index b0b3758fba082..d6119b879a981 100644
--- a/arch/mn10300/unit-asb2305/pci-asb2305.c
+++ b/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;
diff --git a/arch/parisc/kernel/pci.c b/arch/parisc/kernel/pci.c
index 4463a31973ba4..5179e5e6f8fb9 100644
--- a/arch/parisc/kernel/pci.c
+++ b/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;
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index d7eebbaf01f12..e640810e813f3 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/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;
diff --git a/arch/sh/drivers/pci/pci.c b/arch/sh/drivers/pci/pci.c
index b36ca825b3d35..96213fd172ce1 100644
--- a/arch/sh/drivers/pci/pci.c
+++ b/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;
diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index d56c1f34689ec..37b66c60abe32 100644
--- a/arch/sparc/kernel/pci.c
+++ b/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;
diff --git a/arch/sparc/kernel/pcic.c b/arch/sparc/kernel/pcic.c
index 46fda64ff1635..75e88c00bca39 100644
--- a/arch/sparc/kernel/pcic.c
+++ b/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;
diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c
index 924e40c916d3d..5a8fbf8d4caca 100644
--- a/arch/x86/pci/i386.c
+++ b/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;
diff --git a/arch/xtensa/kernel/pci.c b/arch/xtensa/kernel/pci.c
index d7efab03164e6..cd10269312037 100644
--- a/arch/xtensa/kernel/pci.c
+++ b/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;
diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c
index d29d69a37940a..a26135bb0ffd0 100644
--- a/drivers/pci/bus.c
+++ b/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)
diff --git a/drivers/pcmcia/rsrc_mgr.c b/drivers/pcmcia/rsrc_mgr.c
index f92a2dac13a2d..f8401a0ef89b9 100644
--- a/drivers/pcmcia/rsrc_mgr.c
+++ b/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;
diff --git a/drivers/pcmcia/rsrc_nonstatic.c b/drivers/pcmcia/rsrc_nonstatic.c
index b65902870e449..45d75dc452f0e 100644
--- a/drivers/pcmcia/rsrc_nonstatic.c
+++ b/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;
diff --git a/include/linux/ioport.h b/include/linux/ioport.h
index f4195de4eb9dd..4a811891dbe3f 100644
--- a/include/linux/ioport.h
+++ b/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);
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 1bd9f52b24b89..449d51560fc2e 100644
--- a/include/linux/pci.h
+++ b/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);
diff --git a/kernel/resource.c b/kernel/resource.c
index e697f20e22882..7fd123ad00aa9 100644
--- a/kernel/resource.c
+++ b/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)