arch Kconfig: centralise CONFIG_ARCH_NO_VIRT_TO_BUS

Change it to CONFIG_HAVE_VIRT_TO_BUS and set it in all architecures
that already provide virt_to_bus().

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: H Hartley Sweeten <hartleys@visionengravers.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Vineet Gupta <Vineet.Gupta1@synopsys.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/Kconfig

@@ -303,6 +303,13 @@ config ARCH_WANT_OLD_COMPAT_IPC
 	select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
 	bool
 
+config HAVE_VIRT_TO_BUS
+	bool
+	help
+	  An architecture should select this if it implements the
+	  deprecated interface virt_to_bus().  All new architectures
+	  should probably not select this.
+
 config HAVE_ARCH_SECCOMP_FILTER
 	bool
 	help

arch/alpha/Kconfig

@@ -9,6 +9,7 @@ config ALPHA
 	select HAVE_PERF_EVENTS
 	select HAVE_DMA_ATTRS
 	select HAVE_GENERIC_HARDIRQS
+	select HAVE_VIRT_TO_BUS
 	select GENERIC_IRQ_PROBE
 	select AUTO_IRQ_AFFINITY if SMP
 	select GENERIC_IRQ_SHOW

arch/arm/Kconfig

@@ -49,6 +49,7 @@ config ARM
 	select HAVE_REGS_AND_STACK_ACCESS_API
 	select HAVE_SYSCALL_TRACEPOINTS
 	select HAVE_UID16
+	select HAVE_VIRT_TO_BUS
 	select KTIME_SCALAR
 	select PERF_USE_VMALLOC
 	select RTC_LIB

arch/avr32/Kconfig

@@ -7,6 +7,7 @@ config AVR32
 	select HAVE_OPROFILE
 	select HAVE_KPROBES
 	select HAVE_GENERIC_HARDIRQS
+	select HAVE_VIRT_TO_BUS
 	select GENERIC_IRQ_PROBE
 	select GENERIC_ATOMIC64
 	select HARDIRQS_SW_RESEND

arch/blackfin/Kconfig

@@ -33,6 +33,7 @@ config BLACKFIN
 	select ARCH_HAVE_CUSTOM_GPIO_H
 	select ARCH_WANT_OPTIONAL_GPIOLIB
 	select HAVE_UID16
+	select HAVE_VIRT_TO_BUS
 	select ARCH_WANT_IPC_PARSE_VERSION
 	select HAVE_GENERIC_HARDIRQS
 	select GENERIC_ATOMIC64

arch/cris/Kconfig

@@ -43,6 +43,7 @@ config CRIS
 	select GENERIC_ATOMIC64
 	select HAVE_GENERIC_HARDIRQS
 	select HAVE_UID16
+	select HAVE_VIRT_TO_BUS
 	select ARCH_WANT_IPC_PARSE_VERSION
 	select GENERIC_IRQ_SHOW
 	select GENERIC_IOMAP

arch/frv/Kconfig

@@ -6,6 +6,7 @@ config FRV
 	select HAVE_PERF_EVENTS
 	select HAVE_UID16
 	select HAVE_GENERIC_HARDIRQS
+	select HAVE_VIRT_TO_BUS
 	select GENERIC_IRQ_SHOW
 	select HAVE_DEBUG_BUGVERBOSE
 	select ARCH_HAVE_NMI_SAFE_CMPXCHG

arch/h8300/Kconfig

@@ -5,6 +5,7 @@ config H8300
 	select HAVE_GENERIC_HARDIRQS
 	select GENERIC_ATOMIC64
 	select HAVE_UID16
+	select HAVE_VIRT_TO_BUS
 	select ARCH_WANT_IPC_PARSE_VERSION
 	select GENERIC_IRQ_SHOW
 	select GENERIC_CPU_DEVICES

arch/ia64/Kconfig

@@ -26,6 +26,7 @@ config IA64
 	select HAVE_MEMBLOCK
 	select HAVE_MEMBLOCK_NODE_MAP
 	select HAVE_VIRT_CPU_ACCOUNTING
+	select HAVE_VIRT_TO_BUS
 	select ARCH_DISCARD_MEMBLOCK
 	select GENERIC_IRQ_PROBE
 	select GENERIC_PENDING_IRQ if SMP

arch/m32r/Kconfig

@@ -10,6 +10,7 @@ config M32R
 	select ARCH_WANT_IPC_PARSE_VERSION
 	select HAVE_DEBUG_BUGVERBOSE
 	select HAVE_GENERIC_HARDIRQS
+	select HAVE_VIRT_TO_BUS
 	select GENERIC_IRQ_PROBE
 	select GENERIC_IRQ_SHOW
 	select GENERIC_ATOMIC64

arch/m68k/Kconfig

@@ -8,6 +8,7 @@ config M68K
 	select GENERIC_IRQ_SHOW
 	select GENERIC_ATOMIC64
 	select HAVE_UID16
+	select HAVE_VIRT_TO_BUS
 	select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS
 	select GENERIC_CPU_DEVICES
 	select GENERIC_STRNCPY_FROM_USER if MMU

arch/microblaze/Kconfig

@@ -19,6 +19,7 @@ config MICROBLAZE
 	select HAVE_DEBUG_KMEMLEAK
 	select IRQ_DOMAIN
 	select HAVE_GENERIC_HARDIRQS
+	select HAVE_VIRT_TO_BUS
 	select GENERIC_IRQ_PROBE
 	select GENERIC_IRQ_SHOW
 	select GENERIC_PCI_IOMAP

arch/mips/Kconfig

@@ -38,6 +38,7 @@ config MIPS
 	select GENERIC_CLOCKEVENTS
 	select GENERIC_CMOS_UPDATE
 	select HAVE_MOD_ARCH_SPECIFIC
+	select HAVE_VIRT_TO_BUS
 	select MODULES_USE_ELF_REL if MODULES
 	select MODULES_USE_ELF_RELA if MODULES && 64BIT
 	select CLONE_BACKWARDS

arch/mn10300/Kconfig

@@ -8,6 +8,7 @@ config MN10300
 	select HAVE_ARCH_KGDB
 	select GENERIC_ATOMIC64
 	select HAVE_NMI_WATCHDOG if MN10300_WD_TIMER
+	select HAVE_VIRT_TO_BUS
 	select GENERIC_CLOCKEVENTS
 	select MODULES_USE_ELF_RELA
 	select OLD_SIGSUSPEND3

arch/openrisc/Kconfig

@@ -12,6 +12,7 @@ config OPENRISC
 	select ARCH_WANT_OPTIONAL_GPIOLIB
         select HAVE_ARCH_TRACEHOOK
 	select HAVE_GENERIC_HARDIRQS
+	select HAVE_VIRT_TO_BUS
 	select GENERIC_IRQ_CHIP
 	select GENERIC_IRQ_PROBE
 	select GENERIC_IRQ_SHOW

arch/parisc/Kconfig

@@ -19,6 +19,7 @@ config PARISC
 	select GENERIC_SMP_IDLE_THREAD
 	select GENERIC_STRNCPY_FROM_USER
 	select HAVE_MOD_ARCH_SPECIFIC
+	select HAVE_VIRT_TO_BUS
 	select MODULES_USE_ELF_RELA
 	select CLONE_BACKWARDS
 	select TTY # Needed for pdc_cons.c

arch/powerpc/Kconfig

@@ -87,9 +87,6 @@ config GENERIC_GPIO
 	help
 	  Generic GPIO API support
 
-config ARCH_NO_VIRT_TO_BUS
-	def_bool PPC64
-
 config PPC
 	bool
 	default y
@@ -101,6 +98,7 @@ config PPC
 	select HAVE_FUNCTION_GRAPH_TRACER
 	select SYSCTL_EXCEPTION_TRACE
 	select ARCH_WANT_OPTIONAL_GPIOLIB
+	select HAVE_VIRT_TO_BUS if !PPC64
 	select HAVE_IDE
 	select HAVE_IOREMAP_PROT
 	select HAVE_EFFICIENT_UNALIGNED_ACCESS

arch/s390/Kconfig

@@ -134,6 +134,7 @@ config S390
 	select HAVE_SYSCALL_WRAPPERS
 	select HAVE_UID16 if 32BIT
 	select HAVE_VIRT_CPU_ACCOUNTING
+	select HAVE_VIRT_TO_BUS
 	select INIT_ALL_POSSIBLE
 	select KTIME_SCALAR if 32BIT
 	select MODULES_USE_ELF_RELA

arch/score/Kconfig

@@ -12,6 +12,7 @@ config SCORE
        select GENERIC_CPU_DEVICES
        select GENERIC_CLOCKEVENTS
        select HAVE_MOD_ARCH_SPECIFIC
+	select HAVE_VIRT_TO_BUS
 	select MODULES_USE_ELF_REL
 	select CLONE_BACKWARDS
 

arch/sh/Kconfig

@@ -148,9 +148,6 @@ config ARCH_HAS_ILOG2_U32
 config ARCH_HAS_ILOG2_U64
 	def_bool n
 
-config ARCH_NO_VIRT_TO_BUS
-	def_bool y
-
 config ARCH_HAS_DEFAULT_IDLE
 	def_bool y
 

arch/sparc/Kconfig

@@ -146,9 +146,6 @@ config GENERIC_GPIO
 	help
 	  Generic GPIO API support
 
-config ARCH_NO_VIRT_TO_BUS
-	def_bool y
-
 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 	def_bool y if SPARC64
 

arch/tile/Kconfig

@@ -17,6 +17,7 @@ config TILE
 	select GENERIC_IRQ_SHOW
 	select HAVE_DEBUG_BUGVERBOSE
 	select HAVE_SYSCALL_WRAPPERS if TILEGX
+	select HAVE_VIRT_TO_BUS
 	select SYS_HYPERVISOR
 	select ARCH_HAVE_NMI_SAFE_CMPXCHG
 	select GENERIC_CLOCKEVENTS

arch/unicore32/Kconfig

@@ -9,6 +9,7 @@ config UNICORE32
 	select GENERIC_ATOMIC64
 	select HAVE_KERNEL_LZO
 	select HAVE_KERNEL_LZMA
+	select HAVE_VIRT_TO_BUS
 	select ARCH_HAVE_CUSTOM_GPIO_H
 	select GENERIC_FIND_FIRST_BIT
 	select GENERIC_IRQ_PROBE

arch/x86/Kconfig

@@ -112,6 +112,7 @@ config X86
 	select GENERIC_STRNLEN_USER
 	select HAVE_CONTEXT_TRACKING if X86_64
 	select HAVE_IRQ_TIME_ACCOUNTING
+	select HAVE_VIRT_TO_BUS
 	select MODULES_USE_ELF_REL if X86_32
 	select MODULES_USE_ELF_RELA if X86_64
 	select CLONE_BACKWARDS if X86_32

arch/xtensa/Kconfig

@@ -9,6 +9,7 @@ config XTENSA
 	select HAVE_IDE
 	select GENERIC_ATOMIC64
 	select HAVE_GENERIC_HARDIRQS
+	select HAVE_VIRT_TO_BUS
 	select GENERIC_IRQ_SHOW
 	select GENERIC_CPU_DEVICES
 	select MODULES_USE_ELF_RELA

mm/Kconfig

@@ -287,7 +287,7 @@ config NR_QUICK
 
 config VIRT_TO_BUS
 	def_bool y
-	depends on !ARCH_NO_VIRT_TO_BUS
+	depends on HAVE_VIRT_TO_BUS
 
 config MMU_NOTIFIER
 	bool