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Andrew Morton 57d4810ea0 revert "x86, serial: convert legacy COM ports to platform devices" 
Revert 7e92b4fc34.  It broke Sébastien Dugué's
machine and Jeff said (persuasively)

  This seems like it will break decades-long-working stuff, in favor of
  breaking new ground in our favorite area, "trusting the BIOS."

  It's just not worth it for serial ports, IMO.  Serial ports are something
  that just shouldn't break at this late stage in the game.  My new Intel
  platform boxes don't even have serial ports, so I question the value of
  messing with serial port probing even more...  because...  just wait a year,
  and your box won't have a serial port either!  :)

  I certainly don't object to the use of platform devices (or isa_driver),
  but the probe change seems questionable.  That's sorta analagous to
  rewriting the floppy driver probe routine.  Sure you could do it...  but why
  risk all that damage and go through debugging all over again?

  It seems clear from this report that we cannot, should not, trust BIOS for
  something (a) so simple and (b) that has been working for over a decade.

Much discussion ensued and we've decided to have another go at all of this.

Cc: Sébastien Dugué <sebastien.dugue@bull.net>
Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Adam Belay <ambx1@neo.rr.com>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Jeff Garzik <jeff@garzik.org>
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Michal Piotrowski <michal.k.k.piotrowski@gmail.com>
Cc: Sascha Sommer <saschasommer@freenet.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-31 15:39:38 -07:00
..
mach-bigsmp [PATCH] x86: default to physical mode on hotplug CPU kernels 2007-05-02 19:27:04 +02:00
mach-default i386: move PIT function declarations and constants to correct header file 2007-07-21 18:37:14 -07:00
mach-es7000 i386: es7000 build breakage fix 2007-07-06 10:23:43 -07:00
mach-generic [PATCH] x86: default to physical mode on hotplug CPU kernels 2007-05-02 19:27:04 +02:00
mach-numaq [PATCH] x86: default to physical mode on hotplug CPU kernels 2007-05-02 19:27:04 +02:00
mach-summit [PATCH] x86: Log reason why TSC was marked unstable 2007-05-02 19:27:08 +02:00
mach-visws [PATCH] x86: default to physical mode on hotplug CPU kernels 2007-05-02 19:27:04 +02:00
mach-voyager i386: remove pit_interrupt_hook 2007-07-21 18:37:08 -07:00
xen xen: add the Xenbus sysfs and virtual device hotplug driver 2007-07-18 08:47:45 -07:00
8253pit.h
a.out.h arch: personality independent stack top 2007-07-19 10:04:45 -07:00
acpi.h ACPI: Kconfig: remove CONFIG_ACPI_SLEEP from source 2007-07-25 01:29:39 -04:00
agp.h [AGPGART] Move [un]map_page_into_agp into asm/agp.h 2007-04-26 14:22:50 -04:00
alternative-asm.i Remove all inclusions of <linux/config.h> 2006-10-04 03:38:54 -04:00
alternative.h x86: Fix alternatives and kprobes to remap write-protected kernel text 2007-07-22 11:03:37 -07:00
apic.h [PATCH] i386: safe_apic_wait_icr_idle - i386 2007-05-02 19:27:17 +02:00
apicdef.h
arch_hooks.h IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
atomic.h i386: fix early usage of atomic_add_return and local_add_return on real i386 2007-05-23 20:14:15 -07:00
auxvec.h
bitops.h Fix misspellings collected by members of KJ list. 2007-05-09 07:14:03 +02:00
boot.h include/asm-i386/boot.h: This is <asm/boot.h>, not <linux/boot.h> 2007-07-12 10:55:54 -07:00
bootparam.h [x86 setup] Make struct ist_info cross-architecture, and use in setup code 2007-07-25 12:02:21 -07:00
bug.h [PATCH] Generic BUG for i386 2006-12-08 08:28:39 -08:00
bugs.h [PATCH] x86: update for i386 and x86-64 check_bugs 2007-05-02 19:27:16 +02:00
byteorder.h
cache.h
cacheflush.h [PATCH] Optimize D-cache alias handling on fork 2006-12-13 09:27:08 -08:00
checksum.h [NET]: I386 checksum annotations and cleanups. 2006-12-02 21:23:19 -08:00
cmpxchg.h i386: Use patchable lock prefix in set_64bit 2007-07-22 11:03:38 -07:00
cpu.h [PATCH] i386: introduce the mechanism of disabling cpu hotplug control 2006-12-07 02:14:10 +01:00
cpufeature.h Use a new CPU feature word to cover features that are spread around 2007-07-12 10:55:54 -07:00
cputime.h
current.h [PATCH] i386: Convert PDA into the percpu section 2007-05-02 19:27:16 +02:00
debugreg.h
delay.h [PATCH] vmi: paravirt drop udelay op 2007-03-05 07:57:52 -08:00
desc.h [PATCH] i386: Page-align the GDT 2007-05-02 19:27:15 +02:00
device.h ACPI: Change ACPI to use dev_archdata instead of firmware_data 2006-12-01 14:52:01 -08:00
div64.h [NET]: div64_64 consolidate (rev3) 2007-04-25 22:23:33 -07:00
dma-mapping.h x86: Disable DAC on VIA bridges 2007-06-20 14:27:25 -07:00
dma.h
dmi.h
dwarf2.h [PATCH] i386/x86-64: Work around gcc bug with noreturn functions in unwinder 2006-09-26 10:52:41 +02:00
e820.h Replace CONFIG_SOFTWARE_SUSPEND with CONFIG_HIBERNATION 2007-07-29 16:45:38 -07:00
edac.h
elf.h i386: sched.h inclusion from module.h is baack 2007-05-08 11:15:08 -07:00
emergency-restart.h
errno.h
fb.h fbdev: detect primary display device 2007-07-17 10:23:11 -07:00
fcntl.h
fixmap.h serial: convert early_uart to earlycon for 8250 2007-07-16 09:05:35 -07:00
floppy.h IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
frame.i Remove all inclusions of <linux/config.h> 2006-10-04 03:38:54 -04:00
futex.h [PATCH] mm: pagefault_{disable,enable}() 2006-12-07 08:39:21 -08:00
genapic.h [PATCH] x86: default to physical mode on hotplug CPU kernels 2007-05-02 19:27:04 +02:00
geode.h i386: basic infrastructure support for AMD geode-class machines 2007-07-21 18:37:14 -07:00
hardirq.h
highmem.h [PATCH] i386: PARAVIRT: add kmap_atomic_pte for mapping highpte pages 2007-05-02 19:27:15 +02:00
hpet.h x86: share hpet.h with i386 2007-07-21 18:37:09 -07:00
hw_irq.h [PATCH] i386/x86_64: Remove global IO_APIC_VECTOR 2006-10-08 12:24:02 -07:00
hypertransport.h [PATCH] Initial generic hypertransport interrupt support 2006-10-04 07:55:29 -07:00
i387.h [PATCH] i386: avoid redundant preempt_disable in __unlazy_fpu 2007-05-02 19:27:21 +02:00
i8253.h i386: move PIT function declarations and constants to correct header file 2007-07-21 18:37:14 -07:00
i8259.h
ide.h fix jvc cdrom drive lockup 2007-07-16 09:05:40 -07:00
intel_arch_perfmon.h [PATCH] x86: i386/x86-64 Add nmi watchdog support for new Intel CPUs 2006-09-26 10:52:27 +02:00
io_apic.h [PATCH] io_apic.h needs apicdef.h 2007-03-05 07:57:50 -08:00
io.h serial: convert early_uart to earlycon for 8250 2007-07-16 09:05:35 -07:00
ioctl.h
ioctls.h tty: i386/x86_64 arbitary speed support 2007-05-08 11:15:03 -07:00
ipc.h
ipcbuf.h
irq_regs.h [PATCH] i386: Convert PDA into the percpu section 2007-05-02 19:27:16 +02:00
irq.h xen: Core Xen implementation 2007-07-18 08:47:42 -07:00
irqflags.h [PATCH] i386: Use X86_EFLAGS_IF in irqflags.h. 2007-05-02 19:27:10 +02:00
ist.h [x86 setup] Make struct ist_info cross-architecture, and use in setup code 2007-07-25 12:02:21 -07:00
k8.h [PATCH] x86_64: Clean and enhance up K8 northbridge access code 2006-06-26 10:48:15 -07:00
Kbuild [PATCH] x86: Clean up x86 control register and MSR macros (corrected) 2007-05-02 19:27:12 +02:00
kdebug.h Revert "ipmi: add new IPMI nmi watchdog handling" 2007-05-14 15:24:24 -07:00
kexec.h kdump/kexec: calculate note size at compile time 2007-05-08 11:15:07 -07:00
kmap_types.h
kprobes.h jprobes: remove JPROBE_ENTRY() 2007-07-19 10:04:44 -07:00
ldt.h
linkage.h
local.h i386: fix early usage of atomic_add_return and local_add_return on real i386 2007-05-23 20:14:15 -07:00
math_emu.h [PATCH] i386: PDA: Fix math emulator for new pt_regs 2006-12-07 02:14:03 +01:00
mc146818rtc.h i386: add cpu_relax() to cmos_lock() 2007-07-21 18:37:13 -07:00
mca_dma.h [PATCH] kernel-doc for kernel/dma.c 2006-10-03 08:03:41 -07:00
mca.h
mce.h x86: Stop MCEs and NMIs during code patching 2007-07-22 11:03:37 -07:00
mman.h
mmu_context.h paravirt: unstatic leave_mm 2007-07-18 08:47:41 -07:00
mmu.h [PATCH] vdso: randomize the i386 vDSO by moving it into a vma 2006-06-27 17:32:38 -07:00
mmx.h
mmzone.h i386 mmzone: use __maybe_unused 2007-05-09 12:30:57 -07:00
module.h [PATCH] i386: Add an option for the VIA C7 which sets appropriate L1 cache 2007-05-02 19:27:05 +02:00
mpspec_def.h [PATCH] x86-64: remove remaining pc98 code 2006-12-07 02:14:19 +01:00
mpspec.h [PATCH] clockevents: i386 drivers 2007-02-16 08:13:59 -08:00
msgbuf.h
msidef.h [PATCH] genirq: i386 irq: Move msi message composition into io_apic.c 2006-10-04 07:55:28 -07:00
msr-index.h [PATCH] i386: Enable support for fixed-range IORRs to keep RdMem & WrMem in sync 2007-05-02 19:27:17 +02:00
msr.h i386: msr.h: be paranoid about types and parentheses 2007-05-09 12:49:33 -07:00
mtrr.h [PATCH] x86: Save the MTRRs of the BSP before booting an AP 2007-05-02 19:27:17 +02:00
mutex.h [PATCH] i386: Remove lock section support in mutex.h 2006-09-26 10:52:31 +02:00
namei.h
nmi.h x86: Stop MCEs and NMIs during code patching 2007-07-22 11:03:37 -07:00
numa.h
numaq.h
page.h i386: minor nx handling adjustment 2007-07-21 18:37:09 -07:00
param.h [PATCH] cleanup asm/setup.h userspace visibility 2006-12-07 08:39:46 -08:00
paravirt.h Add a sched_clock paravirt_op 2007-07-18 08:47:42 -07:00
parport.h
pci-direct.h
pci.h x86-64: introduce struct pci_sysdata to facilitate sharing of ->sysdata 2007-07-21 18:37:14 -07:00
percpu.h define new percpu interface for shared data 2007-07-19 10:04:44 -07:00
pgalloc.h paravirt: add an "mm" argument to alloc_pt 2007-07-18 08:47:40 -07:00
pgtable-2level-defs.h [PATCH] i386: PARAVIRT: Allow paravirt backend to choose kernel PMD sharing 2007-05-02 19:27:13 +02:00
pgtable-2level.h page table handling cleanup 2007-07-16 09:05:36 -07:00
pgtable-3level-defs.h [PATCH] i386: PARAVIRT: Allow paravirt backend to choose kernel PMD sharing 2007-05-02 19:27:13 +02:00
pgtable-3level.h page table handling cleanup 2007-07-16 09:05:36 -07:00
pgtable.h mm: remove ptep_test_and_clear_dirty and ptep_clear_flush_dirty 2007-07-17 10:22:59 -07:00
poll.h Consolidate asm/poll.h 2007-05-11 08:29:34 -07:00
posix_types.h i386: improve and correct inline asm memory constraints 2006-07-08 15:24:18 -07:00
processor-cyrix.h x86: Replace NSC/Cyrix specific chipset access macros by inlined functions. 2007-07-22 11:03:38 -07:00
processor-flags.h [PATCH] x86: Clean up x86 control register and MSR macros (corrected) 2007-05-02 19:27:12 +02:00
processor.h x86: Replace NSC/Cyrix specific chipset access macros by inlined functions. 2007-07-22 11:03:38 -07:00
ptrace-abi.h [PATCH] Split i386 and x86_64 ptrace.h 2006-09-26 08:49:10 -07:00
ptrace.h [PATCH] i386: Profile pc badness 2007-02-13 13:26:21 +01:00
reboot_fixups.h [PATCH] i386: clean up mach_reboot_fixups 2007-05-02 19:27:06 +02:00
reboot.h [PATCH] i386: Add machine_ops interface to abstract halting and rebooting 2007-05-02 19:27:11 +02:00
required-features.h i386: Allow KVM on i386 nonpae 2007-07-19 14:37:05 -07:00
resource.h
resume-trace.h x86: PM_TRACE support 2007-07-21 18:37:10 -07:00
rtc.h
rwlock.h [PATCH] i386: Clean up spin/rwlocks 2006-09-26 10:52:32 +02:00
rwsem.h [PATCH] lockdep: name some old style locks 2006-12-07 08:39:36 -08:00
scatterlist.h PCI: scatterlist.h needs types.h 2007-05-02 19:02:34 -07:00
seccomp.h
sections.h
segment.h [PATCH] i386: Fix UP gdt bugs 2007-05-02 19:27:16 +02:00
semaphore.h [PATCH] i386: Use early clobbers for semaphores now 2006-09-27 14:39:51 -07:00
sembuf.h
serial.h revert "x86, serial: convert legacy COM ports to platform devices" 2007-07-31 15:39:38 -07:00
setup.h paravirt: add a hook for once the allocator is ready 2007-07-18 08:47:41 -07:00
shmbuf.h
shmparam.h
sigcontext.h
siginfo.h
signal.h [PATCH] headers_check: move inclusion of <linux/linkage.h> in <asm-i386/signal.h> 2006-09-13 07:32:15 -07:00
smp.h paravirt: make siblingmap functions visible 2007-07-18 08:47:41 -07:00
socket.h [NET]: Adding SO_TIMESTAMPNS / SCM_TIMESTAMPNS support 2007-04-25 22:24:21 -07:00
sockios.h [NET]: Introduce SIOCGSTAMPNS ioctl to get timestamps with nanosec resolution 2007-04-25 22:24:04 -07:00
sparsemem.h
spinlock_types.h [PATCH] Remove 'volatile' from spinlock_types 2006-12-06 14:39:53 -08:00
spinlock.h [PATCH] paravirt: Patch inline replacements for paravirt intercepts 2006-12-07 02:14:08 +01:00
srat.h
stacktrace.h [PATCH] i386: Do stacktracer conversion too 2006-09-26 10:52:34 +02:00
stat.h
statfs.h
string.h i386: Move all simple string operations out of line 2007-07-21 18:37:08 -07:00
suspend.h ACPI: Kconfig: remove CONFIG_ACPI_SLEEP from source 2007-07-25 01:29:39 -04:00
sync_bitops.h Fix misspellings collected by members of KJ list. 2007-05-09 07:14:03 +02:00
system.h [PATCH] sched: sched_cacheflush is now unused 2007-07-19 21:28:35 +02:00
termbits.h tty: i386/x86_64 arbitary speed support 2007-05-08 11:15:03 -07:00
termios.h tty: i386/x86_64 arbitary speed support 2007-05-08 11:15:03 -07:00
therm_throt.h [PATCH] x86: Add a cumulative thermal throttle event counter. 2006-09-26 10:52:42 +02:00
thread_info.h remove unused TIF_NOTIFY_RESUME flag 2007-07-31 15:39:38 -07:00
time.h [PATCH] vmi: pit override 2007-03-05 07:57:52 -08:00
timer.h i386: move PIT function declarations and constants to correct header file 2007-07-21 18:37:14 -07:00
timex.h [PATCH] Time: i386 Conversion - part 2: Rework TSC Support 2006-06-26 09:58:21 -07:00
tlb.h
tlbflush.h i386: add reference to the arguments 2007-07-21 18:37:10 -07:00
topology.h x86-64: introduce struct pci_sysdata to facilitate sharing of ->sysdata 2007-07-21 18:37:14 -07:00
tsc.h lguest: the host code 2007-07-19 10:04:52 -07:00
types.h [PATCH] Centralise definitions of sector_t and blkcnt_t 2006-12-04 19:41:15 -08:00
uaccess.h i386: replace hard-coded constant with appropriate macro from kernel.h 2007-07-21 18:37:13 -07:00
ucontext.h
unaligned.h
unistd.h sys_fallocate() implementation on i386, x86_64 and powerpc 2007-07-17 21:42:44 -04:00
unwind.h Remove stack unwinder for now 2006-12-15 08:47:51 -08:00
user.h
vga.h [PATCH] vgacon: make VGA_MAP_MEM take size, remove extra use 2006-06-22 15:05:58 -07:00
vic.h [VOYAGER] fix up ptregs removal mess 2006-10-12 22:25:03 -05:00
vm86.h [PATCH] i386: Update sys_vm86 to cope with changed pt_regs and %gs usage 2006-12-07 02:14:03 +01:00
vmi_time.h Add a sched_clock paravirt_op 2007-07-18 08:47:42 -07:00
vmi.h [PATCH] vmi: apic ops 2007-03-05 07:57:52 -08:00
voyager.h [VOYAGER] Convert the monitor thread to use the kthread API 2007-05-01 10:09:29 -05:00
xor.h