Linus Torvalds 316e8d79a0 pci_iounmap'2: Electric Boogaloo: try to make sense of it all ... Nathan Chancellor reports that the recent change to pci_iounmap in commit 9caea00076 ("parisc: Declare pci_iounmap() parisc version only when CONFIG_PCI enabled") causes build errors on arm64. It took me about two hours to convince myself that I think I know what the logic of that mess of #ifdef's in the <asm-generic/io.h> header file really aim to do, and rewrite it to be easier to follow. Famous last words. Anyway, the code has now been lifted from that grotty header file into lib/pci_iomap.c, and has fairly extensive comments about what the logic is. It also avoids indirecting through another confusing (and badly named) helper function that has other preprocessor config conditionals. Let's see what odd architecture did something else strange in this area to break things. But my arm64 cross build is clean. Fixes: 9caea00076 ("parisc: Declare pci_iounmap() parisc version only when CONFIG_PCI enabled") Reported-by: Nathan Chancellor <nathan@kernel.org> Cc: Helge Deller <deller@gmx.de> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Ulrich Teichert <krypton@ulrich-teichert.org> Cc: James Bottomley <James.Bottomley@hansenpartnership.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2021-09-19 17:13:35 -07:00
..
bitops	asm-generic changes for 5.15	2021-09-01 15:13:02 -07:00
vdso	…
Kbuild	Rework of the X86 irq stack handling:	2021-02-24 16:32:23 -08:00
asm-offsets.h	…
asm-prototypes.h	…
atomic.h	locking/atomic: delete !ARCH_ATOMIC remnants	2021-05-26 13:20:52 +02:00
atomic64.h	locking/atomic: delete !ARCH_ATOMIC remnants	2021-05-26 13:20:52 +02:00
audit_change_attr.h	…
audit_dir_write.h	…
audit_read.h	…
audit_signal.h	…
audit_write.h	…
barrier.h	compiler.h: fix barrier_data() on clang	2020-11-14 11:26:03 -08:00
bitops.h	…
bitsperlong.h	lib: extend the scope of small_const_nbits() macro	2021-05-06 19:24:11 -07:00
bug.h	Merge branch 'akpm' (patches from Andrew)	2021-07-02 12:08:10 -07:00
bugs.h	…
cache.h	…
cacheflush.h	make asm-generic/cacheflush.h more standalone	2020-06-26 00:27:37 -07:00
checksum.h	unify generic instances of csum_partial_copy_nocheck()	2020-08-20 15:45:14 -04:00
cmpxchg-local.h	locking/atomic: cmpxchg: make `generic` a prefix	2021-05-26 13:20:50 +02:00
cmpxchg.h	locking/atomic: delete !ARCH_ATOMIC remnants	2021-05-26 13:20:52 +02:00
compat.h	compat: make linux/compat.h available everywhere	2021-07-23 14:20:24 +01:00
current.h	…
delay.h	…
device.h	…
div64.h	ARM: 9117/1: asm-generic: div64: Remove always-true __div64_const32_is_OK()	2021-08-20 11:39:28 +01:00
dma-mapping.h	…
dma.h	…
early_ioremap.h	mm/early_ioremap.c: remove redundant early_ioremap_shutdown()	2021-09-08 11:50:24 -07:00
emergency-restart.h	…
error-injection.h	treewide: Convert macro and uses of __section(foo) to __section("foo")	2020-10-25 14:51:49 -07:00
exec.h	…
export.h	asm-generic: export: Stub EXPORT_SYMBOL with __DISABLE_EXPORTS	2021-02-03 16:42:57 +00:00
extable.h	…
fb.h	…
fixmap.h	…
flat.h	…
ftrace.h	…
futex.h	…
getorder.h	asm-generic: force inlining of get_order() to work around gcc10 poor decision	2020-12-15 22:46:15 -08:00
gpio.h	…
hardirq.h	irqstat: Move declaration into asm-generic/hardirq.h	2020-11-23 10:31:06 +01:00
hugetlb.h	mm: Allow arches to provide ptep_get()	2020-06-20 22:14:53 +10:00
hw_irq.h	…
hyperv-tlfs.h	asm-generic/hyperv: add HV_STATUS_ACCESS_DENIED definition	2021-06-17 13:09:38 -04:00
ide_iops.h	…
int-ll64.h	…
io.h	pci_iounmap'2: Electric Boogaloo: try to make sense of it all	2021-09-19 17:13:35 -07:00
ioctl.h	…
iomap.h	parisc: Declare pci_iounmap() parisc version only when CONFIG_PCI enabled	2021-09-19 10:36:09 -07:00
irq.h	…
irq_regs.h	…
irq_work.h	…
irqflags.h	…
kdebug.h	…
kmap_size.h	mm/highmem: Provide and use CONFIG_DEBUG_KMAP_LOCAL	2020-11-24 14:42:08 +01:00
kprobes.h	treewide: Convert macro and uses of __section(foo) to __section("foo")	2020-10-25 14:51:49 -07:00
kvm_para.h	…
kvm_types.h	KVM: Move x86's version of struct kvm_mmu_memory_cache to common code	2020-07-09 13:29:42 -04:00
linkage.h	…
local.h	…
local64.h	…
logic_io.h	lib: add iomem emulation (logic_iomem)	2021-06-17 21:44:51 +02:00
mcs_spinlock.h	…
memory_model.h	mm: remove CONFIG_DISCONTIGMEM	2021-06-29 10:53:55 -07:00
mm_hooks.h	…
mmiowb.h	asm-generic/mmiowb: Allow mmiowb_set_pending() when preemptible()	2020-07-17 10:02:03 +01:00
mmiowb_types.h	…
mmu.h	…
mmu_context.h	asm-generic: add generic MMU versions of mmu context functions	2020-10-26 16:45:03 +01:00
module.h	…
module.lds.h	kbuild: preprocess module linker script	2020-09-25 00:36:41 +09:00
mshyperv.h	hyperv-fixes for 5.15-rc2	2021-09-15 17:18:56 -07:00
msi.h	Generic interrupt and irqchips subsystem:	2020-12-15 15:03:31 -08:00
nommu_context.h	asm-generic: add generic MMU versions of mmu context functions	2020-10-26 16:45:03 +01:00
numa.h	numa: Move numa implementation to common code	2021-01-14 15:08:55 -08:00
page.h	c6x: remove architecture	2021-01-20 09:30:45 +01:00
param.h	…
parport.h	…
pci.h	…
pci_iomap.h	parisc: Declare pci_iounmap() parisc version only when CONFIG_PCI enabled	2021-09-19 10:36:09 -07:00
percpu.h	asm-generic: percpu: avoid Wshadow warning	2020-10-26 23:54:48 +00:00
pgalloc.h	asm-generic: pgalloc.h: use correct #ifdef to enable pud_alloc_one()	2020-08-14 19:56:55 -07:00
pgtable-nop4d.h	mm: rename p4d_page_vaddr to p4d_pgtable and make it return pud_t *	2021-07-08 11:48:22 -07:00
pgtable-nopmd.h	mm: rename pud_page_vaddr to pud_pgtable and make it return pmd_t *	2021-07-08 11:48:22 -07:00
pgtable-nopud.h	mm: rename p4d_page_vaddr to p4d_pgtable and make it return pud_t *	2021-07-08 11:48:22 -07:00
pgtable_uffd.h	…
preempt.h	sched/core: Initialize the idle task with preemption disabled	2021-05-12 13:01:45 +02:00
qrwlock.h	locking/arch: Move qrwlock.h include after qspinlock.h	2021-02-11 07:59:54 -05:00
qrwlock_types.h	…
qspinlock.h	qspinlock: use signed temporaries for cmpxchg	2020-10-26 20:19:48 +01:00
qspinlock_types.h	locking/qspinlock: Do not include atomic.h from qspinlock_types.h	2020-07-29 16:14:19 +02:00
resource.h	…
rwonce.h	asm/rwonce: Don't pull <asm/barrier.h> into 'asm-generic/rwonce.h'	2020-07-21 10:50:36 +01:00
seccomp.h	seccomp: Use -1 marker for end of mode 1 syscall list	2020-07-10 16:01:52 -07:00
sections.h	sections.h: dereference_function_descriptor() returns void pointer	2020-08-11 12:06:15 +02:00
serial.h	…
set_memory.h	…
shmparam.h	…
signal.h	…
simd.h	…
softirq_stack.h	softirq: Move do_softirq_own_stack() to generic asm header	2021-02-10 23:34:16 +01:00
spinlock.h	…
statfs.h	…
string.h	…
switch_to.h	…
syscall.h	audit: Migrate to use SYSCALL_WORK flag	2020-11-16 21:53:16 +01:00
syscalls.h	…
termios-base.h	…
termios.h	…
timex.h	…
tlb.h	tlb: mmu_gather: Introduce tlb_gather_mmu_fullmm()	2021-01-29 20:02:29 +01:00
tlbflush.h	…
topology.h	mm: replace CONFIG_NEED_MULTIPLE_NODES with CONFIG_NUMA	2021-06-29 10:53:55 -07:00
trace_clock.h	…
uaccess.h	asm-generic: uaccess: remove inline strncpy_from_user/strnlen_user	2021-07-27 23:01:13 +02:00
unaligned.h	asm-generic: simplify asm/unaligned.h	2021-05-17 13:30:29 +02:00
user.h	…
vermagic.h	…
vga.h	…
vmlinux.lds.h	vmlinux.lds.h: remove old check for GCC 4.9	2021-09-13 10:18:29 -07:00
vtime.h	…
word-at-a-time.h	…
xor.h	…