[PATCH v5 2/4] PCI: Move isa_dma_bridge_buggy out of dma.h
During recent PCI cleanups we noticed that the isa_dma_bridge_buggy
symbol supported by all architectures is actually only used for x86_32.
This patch moves the symbol out of all architectures limiting usage to
only x86_32. This is possible because only x86_32 platforms or quirks
existing in PCI devices supported on x86_32 ever set this. A new global
header linux/isa-dma.h is added to provide a common place to maintain
the definition.
Suggested-by: Arnd Bergmann
Suggested-by: Christoph Hellwig
Acked-by: Geert Uytterhoeven
Reviewed-by: Christoph Hellwig
Signed-off-by: Stafford Horne
---
Since v4:
- Also remove isa_dma_bridge_buggy from arm64, csky, riscv as this point.
arch/alpha/include/asm/dma.h | 9 -
arch/arc/include/asm/dma.h | 5 -
arch/arm/include/asm/dma.h | 6 --
arch/arm64/include/asm/pci.h | 2 --
arch/csky/include/asm/pci.h| 2 --
arch/ia64/include/asm/dma.h| 2 --
arch/m68k/include/asm/dma.h| 6 --
arch/microblaze/include/asm/dma.h | 6 --
arch/mips/include/asm/dma.h| 8
arch/parisc/include/asm/dma.h | 6 --
arch/powerpc/include/asm/dma.h | 6 --
arch/riscv/include/asm/pci.h | 2 --
arch/s390/include/asm/dma.h| 6 --
arch/sh/include/asm/dma.h | 6 --
arch/sparc/include/asm/dma.h | 8
arch/um/include/asm/pci.h | 2 --
arch/x86/include/asm/dma.h | 8
arch/xtensa/include/asm/dma.h | 7 ---
drivers/comedi/drivers/comedi_isadma.c | 2 +-
drivers/pci/pci.c | 2 ++
drivers/pci/quirks.c | 4 +++-
include/linux/isa-dma.h| 14 ++
sound/core/isadma.c| 2 +-
23 files changed, 21 insertions(+), 100 deletions(-)
create mode 100644 include/linux/isa-dma.h
diff --git a/arch/alpha/include/asm/dma.h b/arch/alpha/include/asm/dma.h
index 28610ea7786d..a04d76b96089 100644
--- a/arch/alpha/include/asm/dma.h
+++ b/arch/alpha/include/asm/dma.h
@@ -365,13 +365,4 @@ extern void free_dma(unsigned int dmanr); /* release it
again */
#define KERNEL_HAVE_CHECK_DMA
extern int check_dma(unsigned int dmanr);
-/* From PCI */
-
-#ifdef CONFIG_PCI
-extern int isa_dma_bridge_buggy;
-#else
-#define isa_dma_bridge_buggy (0)
-#endif
-
-
#endif /* _ASM_DMA_H */
diff --git a/arch/arc/include/asm/dma.h b/arch/arc/include/asm/dma.h
index 5b744f4b10a7..02431027ed2f 100644
--- a/arch/arc/include/asm/dma.h
+++ b/arch/arc/include/asm/dma.h
@@ -7,10 +7,5 @@
#define ASM_ARC_DMA_H
#define MAX_DMA_ADDRESS 0xC000
-#ifdef CONFIG_PCI
-extern int isa_dma_bridge_buggy;
-#else
-#define isa_dma_bridge_buggy 0
-#endif
#endif
diff --git a/arch/arm/include/asm/dma.h b/arch/arm/include/asm/dma.h
index a81dda65c576..907d139be431 100644
--- a/arch/arm/include/asm/dma.h
+++ b/arch/arm/include/asm/dma.h
@@ -143,10 +143,4 @@ extern int get_dma_residue(unsigned int chan);
#endif /* CONFIG_ISA_DMA_API */
-#ifdef CONFIG_PCI
-extern int isa_dma_bridge_buggy;
-#else
-#define isa_dma_bridge_buggy(0)
-#endif
-
#endif /* __ASM_ARM_DMA_H */
diff --git a/arch/arm64/include/asm/pci.h b/arch/arm64/include/asm/pci.h
index 0aebc3488c32..682c922b5658 100644
--- a/arch/arm64/include/asm/pci.h
+++ b/arch/arm64/include/asm/pci.h
@@ -20,8 +20,6 @@
#define arch_can_pci_mmap_wc() 1
#define ARCH_GENERIC_PCI_MMAP_RESOURCE 1
-extern int isa_dma_bridge_buggy;
-
#ifdef CONFIG_PCI
static inline int pci_proc_domain(struct pci_bus *bus)
{
diff --git a/arch/csky/include/asm/pci.h b/arch/csky/include/asm/pci.h
index 0535f1aaae38..5c02454ec724 100644
--- a/arch/csky/include/asm/pci.h
+++ b/arch/csky/include/asm/pci.h
@@ -15,8 +15,6 @@
/* C-SKY shim does not initialize PCI bus */
#define pcibios_assign_all_busses() 1
-extern int isa_dma_bridge_buggy;
-
#ifdef CONFIG_PCI
static inline int pci_proc_domain(struct pci_bus *bus)
{
diff --git a/arch/ia64/include/asm/dma.h b/arch/ia64/include/asm/dma.h
index 59625e9c1f9c..eaed2626ffda 100644
--- a/arch/ia64/include/asm/dma.h
+++ b/arch/ia64/include/asm/dma.h
@@ -12,8 +12,6 @@
extern unsigned long MAX_DMA_ADDRESS;
-extern int isa_dma_bridge_buggy;
-
#define free_dma(x)
#endif /* _ASM_IA64_DMA_H */
diff --git a/arch/m68k/include/asm/dma.h b/arch/m68k/include/asm/dma.h
index f6c5e0dfb4e5..1c8d9c5bc2fa 100644
--- a/arch/m68k/include/asm/dma.h
+++ b/arch/m68k/include/asm/dma.h
@@ -6,10 +6,4 @@
bootmem allocator (but this should do it for this) */
#define MAX_DMA_ADDRESS PAGE_OFFSET
-#ifdef CONFIG_PCI
-extern int isa_dma_bridge_buggy;
-#else
-#define isa_dma_bridge_buggy(0)
-#endif
-
#endif /* _M68K_DMA_H */
diff --git a/arch/microblaze/include/asm/dma.h
b/arch/microblaze/include/asm/dma.h
index f801582be912..7484c9eb66c4 100644
--- a/arch/microblaze/include/asm/dma.h
+++ b/arch/microblaze/include/asm/dma.h
@@
[PATCH] profile: setup_profiling_timer() is moslty not implemented
The setup_profiling_timer() is mostly un-implemented by many
architectures. In many places it isn't guarded by CONFIG_PROFILE
which is needed for it to be used. Make it a weak symbol in
kernel/profile.c and remove the 'return -EINVAL' implementations
from the kenrel.
There are a couple of architectures which do return 0 from
the setup_profiling_timer() function but they don't seem to
do anything else with it. To keep the /proc compatibility for
now, leave these for a future update or removal.
On ARM, this fixes the following sparse warning:
arch/arm/kernel/smp.c:793:5: warning: symbol 'setup_profiling_timer' was not
declared. Should it be static?
Signed-off-by: Ben Dooks
---
arch/alpha/kernel/smp.c | 6 --
arch/arc/kernel/smp.c | 8
arch/arm/kernel/smp.c | 8
arch/arm64/kernel/smp.c | 8
arch/csky/kernel/smp.c | 5 -
arch/hexagon/kernel/smp.c | 5 -
arch/ia64/kernel/smp.c | 6 --
arch/openrisc/kernel/smp.c | 6 --
arch/parisc/kernel/smp.c| 7 ---
arch/powerpc/kernel/smp.c | 7 ---
arch/riscv/kernel/smp.c | 6 --
arch/sparc/kernel/smp_32.c | 5 -
arch/sparc/kernel/smp_64.c | 6 --
arch/x86/include/asm/apic.h | 2 --
arch/x86/kernel/apic/apic.c | 5 -
kernel/profile.c| 8 ++--
16 files changed, 6 insertions(+), 92 deletions(-)
diff --git a/arch/alpha/kernel/smp.c b/arch/alpha/kernel/smp.c
index cb64e4797d2a..f4e20f75438f 100644
--- a/arch/alpha/kernel/smp.c
+++ b/arch/alpha/kernel/smp.c
@@ -497,12 +497,6 @@ smp_cpus_done(unsigned int max_cpus)
((bogosum + 2500) / (5000/HZ)) % 100);
}
-int
-setup_profiling_timer(unsigned int multiplier)
-{
- return -EINVAL;
-}
-
static void
send_ipi_message(const struct cpumask *to_whom, enum ipi_message_type
operation)
{
diff --git a/arch/arc/kernel/smp.c b/arch/arc/kernel/smp.c
index d947473f1e6d..ab9e75e90f72 100644
--- a/arch/arc/kernel/smp.c
+++ b/arch/arc/kernel/smp.c
@@ -232,14 +232,6 @@ int __cpu_up(unsigned int cpu, struct task_struct *idle)
return 0;
}
-/*
- * not supported here
- */
-int setup_profiling_timer(unsigned int multiplier)
-{
- return -EINVAL;
-}
-
/*/
/* Inter Processor Interrupt Handling */
/*/
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 73fc645fc4c7..978db2d96b44 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -787,14 +787,6 @@ void panic_smp_self_stop(void)
cpu_relax();
}
-/*
- * not supported here
- */
-int setup_profiling_timer(unsigned int multiplier)
-{
- return -EINVAL;
-}
-
#ifdef CONFIG_CPU_FREQ
static DEFINE_PER_CPU(unsigned long, l_p_j_ref);
diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c
index 62ed361a4376..ffc5d76cf695 100644
--- a/arch/arm64/kernel/smp.c
+++ b/arch/arm64/kernel/smp.c
@@ -1078,14 +1078,6 @@ bool smp_crash_stop_failed(void)
}
#endif
-/*
- * not supported here
- */
-int setup_profiling_timer(unsigned int multiplier)
-{
- return -EINVAL;
-}
-
static bool have_cpu_die(void)
{
#ifdef CONFIG_HOTPLUG_CPU
diff --git a/arch/csky/kernel/smp.c b/arch/csky/kernel/smp.c
index 6bb38bc2f39b..4b605aa2e1d6 100644
--- a/arch/csky/kernel/smp.c
+++ b/arch/csky/kernel/smp.c
@@ -243,11 +243,6 @@ void __init smp_cpus_done(unsigned int max_cpus)
{
}
-int setup_profiling_timer(unsigned int multiplier)
-{
- return -EINVAL;
-}
-
void csky_start_secondary(void)
{
struct mm_struct *mm = &init_mm;
diff --git a/arch/hexagon/kernel/smp.c b/arch/hexagon/kernel/smp.c
index 619c56420aa0..4ba93e59370c 100644
--- a/arch/hexagon/kernel/smp.c
+++ b/arch/hexagon/kernel/smp.c
@@ -240,11 +240,6 @@ void arch_send_call_function_ipi_mask(const struct cpumask
*mask)
send_ipi(mask, IPI_CALL_FUNC);
}
-int setup_profiling_timer(unsigned int multiplier)
-{
- return -EINVAL;
-}
-
void smp_start_cpus(void)
{
int i;
diff --git a/arch/ia64/kernel/smp.c b/arch/ia64/kernel/smp.c
index 7b7b64eb3129..e2cc59db86bc 100644
--- a/arch/ia64/kernel/smp.c
+++ b/arch/ia64/kernel/smp.c
@@ -333,9 +333,3 @@ smp_send_stop (void)
{
send_IPI_allbutself(IPI_CPU_STOP);
}
-
-int
-setup_profiling_timer (unsigned int multiplier)
-{
- return -EINVAL;
-}
diff --git a/arch/openrisc/kernel/smp.c b/arch/openrisc/kernel/smp.c
index 27041db2c8b0..e1419095a6f0 100644
--- a/arch/openrisc/kernel/smp.c
+++ b/arch/openrisc/kernel/smp.c
@@ -197,12 +197,6 @@ void smp_send_stop(void)
smp_call_function(stop_this_cpu, NULL, 0);
}
-/* not supported, yet */
-int setup_profiling_timer(unsigned int multiplier)
-{
- return -EINVAL;
-}
-
void __init set_smp_cross_call(void (*fn)(const struct cpumask *, unsigned
int))
{
smp_cross_call = fn;
diff --git a/arch/parisc/k
