Implemented support for "wake" GPEs via interaction between
GPEs and the _PRW methods. Every GPE that is pointed to by
one or more _PRWs is identified as a WAKE GPE and by default
will no longer be enabled at runtime. Previously, we were
blindly enabling all GPEs with a corresponding _Lxx or _Exx
method - but most of these turn out to be WAKE GPEs anyway.
We believe this has been the cause of thousands of
"spurious" GPEs on some systems.
This new GPE behavior is can be reverted to the original
behavior (enable ALL GPEs at runtime) via a runtime flag.
Fixed a problem where aliased control methods could not
access objects properly. The proper scope within the
namespace was not initialized (transferred to the target of
the aliased method) before executing the target method.
Fixed a potential race condition on internal object
deletion on the return object in AcpiEvaluateObject.
Integrated a fix for resource descriptors where both
_MEM and _MTP were being extracted instead of just _MEM.
(i.e. bitmask was incorrectly too wide, 0x0F instead of 0x03.)
Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
preventing a fault in some cases.
Updated Notify() values for debug statements in evmisc.c
Return proper status from AcpiUtMutexInitialize,
not just simply AE_OK.
Len Brown [Thu, 25 Mar 2004 12:40:31 +0000 (07:40 -0500)]
[ACPI] PCI interrupt link routing (Luming Yu)
use _PRS to determine resource type for _SRS
fixes HP Proliant servers
http://bugzilla.kernel.org/show_bug.cgi?id=1590
Bjorn Helgaas [Sat, 20 Mar 2004 20:10:21 +0000 (15:10 -0500)]
[PATCH] clean up ACPI GSI/IRQ conversions (i386 part)
Add "acpi_gsi_to_irq()" as a generic replacement for "acpi_irq_to_vector()".
This converts from an ACPI global system interrupt number to a Linux IRQ.
Also, convert i386-specific terminology to use GSI when appropriate.
Len Brown [Fri, 12 Mar 2004 23:14:53 +0000 (18:14 -0500)]
[ACPI] add boot parameters "acpi_osi=" and "acpi_serialize"
acpi_osi= will disable the _OSI method -- which by default
tells the BIOS to behave as if Windows is the OS.
acpi_serialize is for debugging AE_ALREADY_EXISTS failures
Fixed a problem where errors occurring during the parse phase of control
method execution did not abort cleanly. For example, objects created
and installed in the namespace were not deleted. This caused all
subsequent invocations of the method to return the AE_ALREADY_EXISTS
exception.
Implemented a mechanism to force a control method to "Serialized"
execution if the method attempts to create namespace objects.
(The root of the AE_ALREADY_EXISTS problem.)
Implemented support for the predefined _OSI "internal" control method.
Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
and "Windows 2001.1", and can be easily upgraded for new strings as
necessary. This feature allows Linux to execute
the fully tested, "Windows" code path through the ASL code
Global Lock Support: Now allows multiple acquires and releases with any
internal thread. Removed concept of "owning thread" for this special
mutex.
Fixed two functions that were inappropriately declaring large objects on
the CPU stack: ps_parse_loop() and ns_evaluate_relative().
Reduces the stack usage during method execution considerably.
Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
Fixed a problem where acpi_ev_gpe_detect() would fault
if there were no GPEs defined on the machine.
Implemented two runtime options: One to force all control method
execution to "Serialized" to mimic Windows behavior, another to disable
_OSI support if it causes problems on a given machine.
This patch fixes the code that workaround lockups when accessing
the config space of devices on K2 when they are shut down. The
code was there but in the wrong place ;) And a typo prevented the
ohci1394 version of it from working.
Don Fry [Wed, 10 Mar 2004 15:32:25 +0000 (10:32 -0500)]
[PATCH] pcnet32.c oops
When adding an additional device, a variable which has been removed
is accessed. Adding the first device or a 4-port card works.
Adding a second device was not done in PCI hot plug testing. Now
tested on IA32.
Linus Torvalds [Wed, 10 Mar 2004 07:12:33 +0000 (23:12 -0800)]
Revert 8259 timer ack workaround
This patch was trying to work around buggy SMM bios but causes problems
by not deasserting NMI irq line (reported by Thomas Schlicht) for some
integrated local apic.
This patch was written originally as an optimization (with the side
effect to fix those bugged bios) but was never applied to 2.4 tree.
Petr Vandrovec [Tue, 9 Mar 2004 23:58:42 +0000 (15:58 -0800)]
[PATCH] ncpfs fails to correctly retry requests on timeout
sock_sendmsg() modifies iovec passed to it - it sets all length members of
iovec array to zero on success transmission (and even on failed if it
fails after iovec copy, but...) and advances pointers to point at the end
of buffers used. This has an unfortunate effect that ncpfs's retry on
failure does not work for IPX/UDP connections - kernel refused to do anything
because length from iovec was 0 while length passed to sock_sendmsg() was
correct.
This simple fix gets rid of a problem by creating temporary iovec copy, which can
sock_sendmsg destroy if it has such wish.
Jens Axboe [Tue, 9 Mar 2004 23:58:22 +0000 (15:58 -0800)]
[PATCH] set request fastfail bit correctly
From Mike Christie <michaelc@cs.wisc.edu>
The first three bio and request flags are no longer identical. The bio
barrier and rw flags are getting set in __make_request and get_request
respectively, and failfast is getting left out.
This sets the request's failfast flag in __make_request when the bio's
flag is set.
Anton Blanchard [Tue, 9 Mar 2004 23:58:13 +0000 (15:58 -0800)]
[PATCH] ppc64 POWER3 segment table fix
The ppc64 fix last week (enforcing permissions on the kernel when
accessing userspace pages) uncovered a bug on POWER3/RS64. We werent
zeroing the segment table entry before overwriting it and it was possible
for the ks bit to be set on a kernel segment.
The VSID mask was also changed to match reality (we only use 13 bits).
[PATCH] ppc64: Let OF initialize all displays in the system
This patch reworks the early boot calls to OF to initialize displays.
All present displays are now initialized in reverse order so the
OF console stays on the first one. Initializing them all is necessary
for dual head configurations as we need OF driver to properly setup
the secondary TMDS of the video card, XFree isn't able to do that
currently
[PATCH] ppc64: Fix occasional crash at boot in OF interface
The assembly code used to callback into Open Firmware client
interface in 32 bits mode used to backup the stack pointer in
the SPRG2 register.
That upsets Apple's implementation of Open Firmware significantly
and maybe others, causing them to crash in _some_ operations,
apparently the trigger is to cause a segment or hash table
fault, typically happens when letting that code initialize the
second display.
This patch fixes it, along with other cleanups of that asm code,
it did unnecessary register restores and backing up the stack
pointer is actually useless anyway.
Strangely, I though I fixed that a long time ago, but it was still
broken in the current tree...
Drivers like radeonfb fail to find the OF device matching a given PCI
device on the G5 AGP bus because of some bus renumbering tricks. This
patch fixes the problem by fixing the bus numbers in the OF node. This
corrects radeonfb and other drivers looking for EDID / PLL datas in the
OF node.
This fixes possible lockups in pmac_zilog when beeing flooded with
incoming data (not that other serial drivers share the same race, I told
Russel about it already). It also fixes some SCC initialization
problems, add some PM callback, and fix the irda setup code.
[PATCH] pmac_zillog 1/2 : Cosmetic only, change "up" to "uap" to avoid collision
This does cosmetic changes the pmac_zilog, changing the use of "up" as
an identifier in favor "uap" to avoid collision with semaphores, use
proper debug macros, and a few other cosmetic bits.
Rusty Russell [Mon, 8 Mar 2004 14:06:12 +0000 (06:06 -0800)]
[PATCH] remove sparc64's num_possible_cpus()
Levent Serinol <levent.serinol@mynet.com> found that the hotplug cpu
patch broke Sparc64. I introduced a num_possible_cpus(), which
Sparc64 already has. Remove the Sparc64 one.
I also removed Sparc64's cpu_online() macro: it's in linux/cpumask.h
already.
Rusty Russell [Mon, 8 Mar 2004 14:05:53 +0000 (06:05 -0800)]
[PATCH] introduce __drain_pages() to take a CPU number
Extracts core of drain_pages() for hotcpu use. Trivial.
Hotplug CPU needs to drain pages on a downed CPU (usually it's the
current cpu). Introduce "__drain_pages", make the CPU an argument,
and expose it if CONFIG_HOTPLUG_CPU as well as CONFIG_PM.
Jeff Garzik [Mon, 8 Mar 2004 17:33:25 +0000 (12:33 -0500)]
[libata sata_promise] provide proper SCSI completion function
Promise driver uses a custom error handling function, so we need
the fix that was applied to the libata core: the SCSI error
handling thread requires that we complete commands using a special
completion function, since the normal one doesn't work inside
the error handling thread.
The following patch is a very crude one to at least not make sata block
suspend-to-ram entirely. Probably you want more powermanagement handling as
well... but it's a start
Don Fry [Mon, 8 Mar 2004 16:23:53 +0000 (11:23 -0500)]
[PATCH] pcnet32 transmit hang fix
The pcnet32 driver will hang after a few frames (<30) with the 79C971
(and probably the 79C972 though I don't have the hardware to prove it).
By interrupting slightly more frequently the hang will not occur.
Pawel> This machine has RAM BIOS booted from floppy. I ran it and EISA
Pawel> configure utility to check this once more. Card is enabled and not
Pawel> locked. I added eisa_bus.enable_dev=2 parameter but it didn't help much.
Pawel> I'm getting:
Pawel> I added this final entry you mailed but nothing changed. Still - module
Pawel> loads and unloads cleanly and without any warnings on 2.6.4-rc1. But
Pawel> does nothing - not a single line in logs/dmesg after it's loaded. Card
Pawel> does not work after modprobe, I can't get interface up.
Ok, found it.
It really looks like the new EISA probing code in hp100 never got
tested, since a precious offset has disappeared during the rewriting
process.
Please note that you still need to enable the device by hand, since
your BIOS (or maybe the EISA CFG file, since I'm seeing the exact same
problem on a Compaq machine here) doesn't properly enable the card.
Rusty Russell [Mon, 8 Mar 2004 09:12:45 +0000 (01:12 -0800)]
[PATCH] stop_machine_run: Move Bogolock Code Out of module.c
The "bogolock" code was introduced in module.c, as a way of freezing
the machine when we wanted to remove a module. This patch moves it
out to stop_machine.c and stop_machine.h.
Since the code changes affinity and proirity, it's impolite to hijack
the current context, so we use a kthread. This means we have to pass
the function rather than implement "stop_machine()" and
"restart_machine()".
Dave Kleikamp [Mon, 8 Mar 2004 08:40:34 +0000 (02:40 -0600)]
JFS: Avoid incrementing i_count on file create
Committing a transaction creating a file required insuring that the
inode stayed in cache until the journal was written to. i_count was
being incremented until the transaction was complete.
However, incrementing i_count caused fcntl(S_SETLEASE) to fail. I
reworked the transaction code so that the inode does not have to
stay in-memory while the transaction is being committed.
Thanks to Steve French for figuring out why setlease was failing.
Dave Kleikamp [Mon, 8 Mar 2004 07:24:03 +0000 (01:24 -0600)]
JFS: warn users of inaccessible file names
When no iocharset is specified, the default action is to trivially
map each byte into the low order of the 16-bit unicode character.
If an existing name exists that has a non-zero high order byte, the
file will be inaccessible without remounting with iocharset set to
a charset that supports the character.
This patch will cause a warning to be issued to the syslog (no more
than five times) suggesting that the volume be mounted with
iocharset=utf8 in order to access the file.
Andrew Morton [Mon, 8 Mar 2004 06:42:37 +0000 (22:42 -0800)]
[PATCH] vma corruption fix
From: Hugh Dickins <hugh@veritas.com>
Fixes bugzilla #2219
fork's dup_mmap leaves child mm_rb as copied from parent mm while doing all
the copy_page_ranges, and then calls build_mmap_rb without holding
page_table_lock.
try_to_unmap_one's find_vma (holding page_table_lock not mmap_sem) coming
on another cpu may cause mm mayhem. It may leave the child's mmap_cache
pointing to a vma of the parent mm.
When the parent exits and the child faults, quite what happens rather
depends on what junk then inhabits vm_page_prot, which gets set in the page
table, with page_add_rmap adding the ptep, but junk pte likely to fail the
tests for page_remove_rmap.
Eventually the child exits, the page table is freed and try_to_unmap_one
oopses on null ptep_to_mm (but in a kernel with rss limiting, usually
page_referenced hits the null ptep_to_mm first).
This took me days and days to unravel! Big thanks to Matthieu for
reporting it with a good test case.
[ALPHA] Fix compressed bootp.
From Jay.Estabrook@hp.com.
The bootstrap decompressor uses some libraries built for the kernel,
which include lib/lib.a and thus vsprintf.o, whose "vsnprintf"
contains an unresolved reference to "printk".
This is caused by Linus' changes to "vsnprintf" which will now issue a
(printk) warning message under certain conditions.
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