From 2ed86b16eabe4efbf80cc725a8cbb5310746a2fc Mon Sep 17 00:00:00 2001
From: Rob Herring <rob.herring@calxeda.com>
Date: Wed, 25 Jan 2012 20:02:40 -0600
Subject: [PATCH] irq: make SPARSE_IRQ an optionally hidden option
On ARM, we don't want SPARSE_IRQ to be a user visible option. Make
SPARSE_IRQ visible based on MAY_HAVE_SPARSE_IRQ instead of depending
on HAVE_SPARSE_IRQ.
With this, SPARSE_IRQ is not visible on C6X and ARM.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Mark Salter <msalter@redhat.com>
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-c6x-dev@linux-c6x.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-sh@vger.kernel.org
---
arch/arm/Kconfig | 1 -
arch/c6x/Kconfig | 2 +-
arch/powerpc/Kconfig | 2 +-
arch/sh/Kconfig | 2 +-
arch/x86/Kconfig | 1 -
kernel/irq/Kconfig | 5 ++---
6 files changed, 5 insertions(+), 8 deletions(-)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 24626b0419ee..30e7840498ce 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -28,7 +28,6 @@ config ARM
select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
select HAVE_C_RECORDMCOUNT
select HAVE_GENERIC_HARDIRQS
- select HAVE_SPARSE_IRQ
select GENERIC_IRQ_SHOW
select CPU_PM if (SUSPEND || CPU_IDLE)
select GENERIC_PCI_IOMAP
diff --git a/arch/c6x/Kconfig b/arch/c6x/Kconfig
index 26e67f0f0051..2f58c61e2812 100644
--- a/arch/c6x/Kconfig
+++ b/arch/c6x/Kconfig
@@ -11,7 +11,7 @@ config TMS320C6X
select HAVE_DMA_API_DEBUG
select HAVE_GENERIC_HARDIRQS
select HAVE_MEMBLOCK
- select HAVE_SPARSE_IRQ
+ select SPARSE_IRQ
select OF
select OF_EARLY_FLATTREE
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 1919634a9b32..06c1cf0f24a6 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -133,7 +133,7 @@ config PPC
select HAVE_REGS_AND_STACK_ACCESS_API
select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
select HAVE_GENERIC_HARDIRQS
- select HAVE_SPARSE_IRQ
+ select MAY_HAVE_SPARSE_IRQ
select IRQ_PER_CPU
select GENERIC_IRQ_SHOW
select GENERIC_IRQ_SHOW_LEVEL
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 3c8db65c89e5..21b82a8cca21 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -22,7 +22,7 @@ config SUPERH
select HAVE_SYSCALL_TRACEPOINTS
select HAVE_REGS_AND_STACK_ACCESS_API
select HAVE_GENERIC_HARDIRQS
- select HAVE_SPARSE_IRQ
+ select MAY_HAVE_SPARSE_IRQ
select IRQ_FORCED_THREADING
select RTC_LIB
select GENERIC_ATOMIC64
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 864cc6e6ac8e..fb2da445945f 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -69,7 +69,6 @@ config X86
select HAVE_ARCH_JUMP_LABEL
select HAVE_TEXT_POKE_SMP
select HAVE_GENERIC_HARDIRQS
- select HAVE_SPARSE_IRQ
select SPARSE_IRQ
select GENERIC_FIND_FIRST_BIT
select GENERIC_IRQ_PROBE
diff --git a/kernel/irq/Kconfig b/kernel/irq/Kconfig
index 5a38bf4de641..1f2dece9ad4c 100644
--- a/kernel/irq/Kconfig
+++ b/kernel/irq/Kconfig
@@ -13,7 +13,7 @@ config GENERIC_HARDIRQS
# Options selectable by the architecture code
# Make sparse irq Kconfig switch below available
-config HAVE_SPARSE_IRQ
+config MAY_HAVE_SPARSE_IRQ
bool
# Enable the generic irq autoprobe mechanism
@@ -61,8 +61,7 @@ config IRQ_FORCED_THREADING
bool
config SPARSE_IRQ
- bool "Support sparse irq numbering"
- depends on HAVE_SPARSE_IRQ
+ bool "Support sparse irq numbering" if MAY_HAVE_SPARSE_IRQ
---help---
Sparse irq numbering is useful for distro kernels that want