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This returns the FADT support to the original behavior, which is
to use default register widths. However, now check each register
definition and report a warning if it differs from the default.
This is a first step to moving away from the default widths,
rather than outright believing the widths in all FADTs for all
machines, considered rather dangerous until more data is obtained.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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1) Update the register lengths for the PM1 event blocks. The
length must be divided by two in order to use these to access
the status registers.
2) Add run-time option to use default register lengths to override a
faulty FADT.
3) Add warning message if any of the X64 address structures contain a length
that does not match the legacy length earlier in the FADT.
4) Move all FADT warning messages into the ValidateFadt function.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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acpi.h now includes only the "public" acpica headers. All other
acpica headers are "private" and should not be included by acpica
users. One new file, accommon.h is used to include the commonly
used private headers for acpica code generation. Future plans
are to move all private headers to a new subdirectory.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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External driver files should not include any private acpica headers.
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Use new acpi_reset interface to write to reset register
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Uses the FADT-defined reset register and reset value. Checks the
FADT flags for the reset register supported bit. Supports reset
register in memory or I/O space, but not in PCI config space
since the host has the information to do it.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Move public interfaces from hwregs.c to new file, hwxface.c -
similar to the structure of the other ACPICA components.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Changed the acpi_hw_low_level_read and acpi_hw_low_level_write functions to
the public acpi_read and acpi_write to allow direct access to
ACPI registers. Removed the "width" parameter since the width
can be obtained from the input GAS structure. Updated the FADT
initialization to setup the GAS structures with the proper
widths. Some widths are still hardcoded because many FADTs have
incorrect register lengths.
Signed-off-by: Bob Moore <robert.moore@intel.com
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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acpi_ut_get_node_name is an internal acpica function.
use acpi_get_name to get node ascii name
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Avoid using internal functions: acpi_hw_disable_all_gpes and acpi_hw_enable_all_runtime_gpes
Use new public GPE group enable/disable interfaces: acpi_disable_all_gpes and acpi_enable_all_runtime_gpes
Also avoid using internal symbol ACPI_TABLE_INDEX_FACS, call acpi_get_table.
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Added acpi_disable_all_gpes and acpi_enable_all_runtime_gpes for
public use.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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This function maps an input GPE index to a GPE block device. Also
Added acpi_current_gpe_count to track the current number of GPEs
that are being managed by the ACPICA core (both FADT-based GPEs
and the GPEs contained in GPE block devices.)
Modify drivers/acpi/system.c to use these 2 new interfaces
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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ACPI_FUNCTION_TRACE is an internal acpica function.
remove ACPI_FUNCTION_TRACE
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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ACPI_FUNCTION_TRACE and return_VALUE are internal acpica functions.
remove ACPI_FUNCTION_TRACE
replace return_VALUE with return
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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acpi_namespace_node is internal struct, it should not be used outside of ACPICA
call acpi_get_name to get node ascii name
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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return_ACPI_STATUS is an internal acpica function, replace it with return.
acpi_gbl_permanent_mmap moved from acglobal.h to acpixf.h for external use
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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For Windows compatibility, return an implicit integer of value
zero for methods that have no executable code. A default implicit
value of zero is provided for methods. Lin Ming.
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Merge the code that validates control method argument counts into
the predefined validation module. Eliminates possible multiple
warnings for incorrect counts.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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For predefined methods (such as _BIF), add automatic conversion for
objects that are required to be a String, but a Buffer was found
instead. This can happen when reading string battery data from
an operation region, because it used to be difficult to convert
the data from buffer to string from within the ASL. Linux BZ 11822.
http://bugzilla.kernel.org/show_bug.cgi?id=11822
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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In a fully qualified namepath, allow multiple backslash prefixes.
This can happen because of the use of a double-backslash in strings
(since backslash is the escape character) causing confusion.
ACPICA BZ 739 Lin Ming.
http://www.acpica.org/bugzilla/show_bug.cgi?id=739
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Fixes a problem where the use of an alias within a namepath
would result in a not found error or cause the compiler to fault.
Also now allows forward references from the Alias operator itself.
ACPICA BZ 738.
http://www.acpica.org/bugzilla/show_bug.cgi?id=738
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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This define is no longer used.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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The current implemenation of _OSI within ACPICA only allows other
control methods to execute _OSI. This change allows the host
OS to execute _OSI via the AcpiEvaluateObject interface. _OSI
is a special method -- it does not exist in the AML code, it is
implemented within ACPICA.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Reformat comments to use fewer lines.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Use a global pointer instead of using AcpiGetTableByIndex for
each FACS access. This simplifies the code for the Global Lock
and the Firmware Waking Vector(s).
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Checks if there are two valid but different addresses for the
FACS and DSDT within the FADT (mismatch between the 32-bit and
64-bit fields.)
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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This fixes the name of this address space, changing it from the
incorrect CMOS to the correct SystemCMOS.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Split the "data register I/O" with more informative read and
write messages.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Add a loop counter to force exit from AML While loops if the
count becomes too large. This can occur in poorly written AML
when the hardware does not respond within a while loop and the
loop does not implement a timeout. The maximum loop count is
configurable. A new exception code is returned when a loop is
broken, AE_AML_INFINITE_LOOP. Bob Moore, Alexey Starikovskiy.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Previously, a control state object was allocated and freed for
each execution of the loop. The optimization is to simply reuse
the control state for each iteration. This speeds up the raw loop
execution time by about 5%.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Fixes a possible memory leak if an allocation failure happens in
the parse loop. Must terminate an executing control method.
Lin Ming, Bob Moore. ACPICA BZ 489.
http://www.acpica.org/bugzilla/show_bug.cgi?id=489
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Split AcpiSetFirmwareWakingVector into two: one for the 32-bit
vector, another for the 64-bit vector. This is required because the
host OS must setup the wake much differently for each vector (real
vs. protected mode, etc.) and the interface should not be deciding
which vector to use. Also eliminate the GetFirmwareWakingVector
interface, as it served no purpose (only the firmware reads the
vector, OS only writes the vector.) ACPICA BZ 731.
http://www.acpica.org/bugzilla/show_bug.cgi?id=731
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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New compiler is pickier than older versions.
Joerg Sonnenberger. From ACPICA BZ 732.
http://www.acpica.org/bugzilla/show_bug.cgi?id=732
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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acpi_early_init() was changed to over-write the cmdline param,
making it really inconvenient to set debug flags at boot-time.
Also,
This sets the default level to "info", which is what all the ACPI
drivers use. So to enable messages from drivers, you only have to
supply the "layer" (a.k.a. "component"). For non-"info" ACPI core
and ACPI interpreter messages, you have to supply both level and
layer masks, as before.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Part of the rfkill initialization was done whenever BT was on or not. The
following patch checks for BT presence before registering the rfkill to
the input layer. Some minor cleanups (> 80 char lines) were also added in
the process.
On Tue, Oct 28, 2008 at 10:10:37PM +0300, Andrey Borzenkov wrote:
[...]
> [ 66.633036] toshiba_acpi: Toshiba Laptop ACPI Extras version 0.19
> [ 66.633054] toshiba_acpi: HCI method: \_SB_.VALD.GHCI
> [ 66.637764] input: Toshiba RFKill Switch as /devices/virtual/input/input3
[...]
> [ 113.920753] ------------[ cut here ]------------
> [ 113.920828] kernel BUG at /home/bor/src/linux-git/net/rfkill/rfkill.c:347!
> [ 113.920845] invalid opcode: 0000 [#1]
> [ 113.920877] last sysfs file: /sys/devices/pci0000:00/0000:00:04.0/host0/target0:0:0/0:0:0:0/block/sda/size
> [ 113.920900] Dumping ftrace buffer:
> [ 113.920919] (ftrace buffer empty)
> [ 113.920933] Modules linked in: af_packet irnet ppp_generic slhc ircomm_tty ircomm binfmt_misc loop dm_mirror dm_region_hash dm_log dm_round_robin dm_multipath dm_mod alim15x3 ide_core nvram toshiba cryptomgr aead crypto_blkcipher michael_mic crypto_algapi orinoco_cs orinoco hermes_dld hermes pcmcia firmware_class snd_ali5451 snd_ac97_codec ac97_bus snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device smsc_ircc2 snd_pcm_oss snd_pcm rtc_cmos irda snd_timer snd_mixer_oss rtc_core snd crc_ccitt yenta_socket rtc_lib rsrc_nonstatic i2c_ali1535 pcmcia_core pcspkr psmouse soundcore i2c_core evdev sr_mod snd_page_alloc alim1535_wdt cdrom fan sg video output toshiba_acpi rfkill thermal backlight ali_agp processor ac button input_polldev battery agpgart ohci_hcd usbcore reiserfs pata_ali libata sd_mod scsi_mod [last unloaded: scsi_wait_scan]
> [ 113.921765]
> [ 113.921785] Pid: 3272, comm: ipolldevd Not tainted (2.6.28-rc2-1avb #3) PORTEGE 4000
> [ 113.921801] EIP: 0060:[<dfaa4683>] EFLAGS: 00010246 CPU: 0
> [ 113.921854] EIP is at rfkill_force_state+0x53/0x90 [rfkill]
> [ 113.921870] EAX: 00000000 EBX: 00000000 ECX: 00000003 EDX: 00000000
> [ 113.921885] ESI: 00000000 EDI: ddd50300 EBP: d8d7af40 ESP: d8d7af24
> [ 113.921900] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
> [ 113.921918] Process ipolldevd (pid: 3272, ti=d8d7a000 task=d8d93c90 task.ti=d8d7a000)
> [ 113.921933] Stack:
> [ 113.921945] d8d7af38 00000246 dfb029d8 dfb029c0 dfb029d8 dfb029c0 ddd50300 d8d7af5c
> [ 113.922014] dfb018e2 01000246 01000000 ddd50300 ddd50314 ddabb8a0 d8d7af68 dfb381c1
> [ 113.922098] 00000000 d8d7afa4 c012ec0a 00000000 00000002 00000000 c012eba8 ddabb8c0
> [ 113.922240] Call Trace:
> [ 113.922240] [<dfb018e2>] ? bt_poll_rfkill+0x5c/0x82 [toshiba_acpi]
> [ 113.922240] [<dfb381c1>] ? input_polled_device_work+0x11/0x40 [input_polldev]
> [ 113.922240] [<c012ec0a>] ? run_workqueue+0xea/0x1f0
> [ 113.922240] [<c012eba8>] ? run_workqueue+0x88/0x1f0
> [ 113.922240] [<dfb381b0>] ? input_polled_device_work+0x0/0x40 [input_polldev]
> [ 113.922240] [<c012f047>] ? worker_thread+0x87/0xf0
> [ 113.922240] [<c0132b00>] ? autoremove_wake_function+0x0/0x50
> [ 113.922240] [<c012efc0>] ? worker_thread+0x0/0xf0
> [ 113.922240] [<c013280f>] ? kthread+0x3f/0x80
> [ 113.922240] [<c01327d0>] ? kthread+0x0/0x80
> [ 113.922240] [<c01040d7>] ? kernel_thread_helper+0x7/0x10
> [ 113.922240] Code: 43 54 89 73 54 39 c6 74 11 89 d9 ba 01 00 00 00 b8 40 68 aa df e8 3e 35 69 e0 89 f8 e8 77 fd 85 e0 31 c0 83 c4 10 5b 5e 5f 5d c3 <0f> 0b eb fe 89 f6 8d bc 27 00 00 00 00 be f4 4d aa df bb 5f 01
> [ 113.922240] EIP: [<dfaa4683>] rfkill_force_state+0x53/0x90 [rfkill] SS:ESP 0068:d8d7af24
> [ 113.924700] ---[ end trace 0e404eb40cadd5f0 ]---
Signed-off-by: Frederik Deweerdt <frederik.deweerdt@gmail.com>
Tested-by: Andrey Borzenkov <arvidjaar@mail.ru>
Acked-by: Len Brown <len.brown@intel.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Acked-by: Philip Langdale <philipl@overt.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This reverts commit 558073dd56707864f09d563b64e7c37c021e89d2, along with
the failed try to fix the regression it caused ("ACPI: Fix ACPI battery
regression introduced by commit 558073"), which just made things worse.
Commit aaad077638be1a25871bcae5e43952d6b63abfca (that failed "Fix ACPI
battery regression") got the voltage conversion confused, and fixed the
problem with Rafael's battery monitor apparently just by mistake.
So revert them both, getting us back to the 2.6.27 state in this, and
let's revisit it when people understand what's going on.
Noted-by: Paul Martin <pm@debian.org>
Requested-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Len Brown <len.brown@intel.com>
Cc: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Commit 558073dd56707864f09d563b64e7c37c021e89d2 ("ACPI: battery: Convert
discharge energy rate to current properly") caused the battery subsystem
to report wrong values of the remaining time on battery power and the
time until fully charged on Toshiba Portege R500 (and presumably on
other boxes too).
Fix the issue by correcting the conversion from mW to mA.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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the toshiba ACPI driver will, in a failure case, free the rfkill state
before stopping the polling timer that would use this state. More interesting,
in the same failure case handling, it calls the exit function, which also
frees the rfkill state, but after stopping the polling.
If the race happens, a NULL pointer is passed to rfkill_force_state()
which then causes a nice dereference.
Fix the race by just not doing the too-early freeing of the rfkill state.
This appears to be the cause of a hot issue on kerneloops.org; while I
have no solid evidence of that this patch will fix the issue, the race
appears rather real.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Linux will continue to ignore OSI(Linux),
except for a white-list containing a few systems.
So delete the black-list,
and stop soliciting user-feedback on the console.
Signed-off-by: Len Brown <len.brown@intel.com>
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Fixed Power button is used"
This reverts commit faee816b1502385dc9bc5abf2960d1cc645844d1.
http://bugzilla.kernel.org/show_bug.cgi?id=12091
Signed-off-by: Len Brown <len.brown@intel.com>
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Some Apple boxes evidently require us to set SCI_EN on resume
directly, because if we don't do that, they hung somewhere in the
resume code path. Moreover, on these boxes it is not sufficient to
use acpi_enable() to turn ACPI on during resume. All of this is
against the ACPI specification which states that (1) the BIOS is
supposed to return from the S3 sleep state with ACPI enabled
(SCI_EN set) and (2) the SCI_EN bit is owned by the hardware and we
are not supposed to change it.
For this reason, blacklist the affected systems so that the SCI_EN
bit is set during resume on them.
[NOTE: Unconditional setting SCI_EN for all system on resume doesn't
work, because it makes some other systems crash (that's to be
expected). Also, it is not entirely clear right now if all of the
Apple boxes require this workaround.]
This patch fixes the recent regression tracked as
http://bugzilla.kernel.org/show_bug.cgi?id=12038
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Tested-by: Tino Keitel <tino.keitel@gmx.de>
Tested-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Now I know why I had strange "scheduling in atomic" problems:
acpi_evaluate_integer() does malloc(..., irqs_disabled() ? GFP_ATOMIC
: GFP_KERNEL)... which is (of course) broken.
There's no way to reliably tell if we need GFP_ATOMIC or not from
code, this one for example fails to detect spinlocks held.
Fortunately, allocation seems small enough to be done on stack.
Signed-off-by: Pavel Machek <pavel@suse.cz>
Acked-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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ACPI battery interface reports its state either in mW or in mA, and
discharge rate in your case is reported in mW. power_supply interface
does not have such a parameter, so current_now parameter is used
for all cases. But in case of mW, reported discharge should
be converted into mA.
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Tested-by: Ferenc Wagner <wferi@niif.hu>
Signed-off-by: Len Brown <len.brown@intel.com>
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fix 2.6.28 EC interrupt storm regression
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
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Commit 0794469da3f7b2093575cbdfc1108308dd3641ce: ("ACPI: struct device -
replace bus_id with dev_name(), dev_set_name()") introduced a bug by
testing 'dev_name(ldev)' instead of 'ldev->bus' for NULL when printing
out the bus information.
So if ldev->bus was NULL, we'd oops.
Reported-and-tested-by: Bruno Prémont <bonbons@linux-vserver.org>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Len Brown <len.brown@intel.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Conflicts:
Documentation/kernel-parameters.txt
Signed-off-by: Len Brown <len.brown@intel.com>
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