are reviewed internally in
Intel. This patch set keeps the version number to track the history
that is known to Intel internal developers.
Version 4 of this patch set fixed bunch of CodingStyle issues.
Lv Zheng (2):
ACPI: Add early console framework for DBGP/DBG2.
ACPI: Add Intel MID SPI early
.
Signed-off-by: Lv Zheng lv.zh...@intel.com
---
Documentation/kernel-parameters.txt|1 +
arch/x86/Kconfig.debug | 23 +++
arch/x86/include/asm/mrst.h|2 +-
arch/x86/kernel/early_printk.c | 12 +-
arch/x86/platform/mrst
Microsoft Debug Port Table (DBGP or DBG2) is required for Windows SoC
platforms. This patch is introduced to fix the gap between Windows
and Linux.
Signed-off-by: Lv Zheng lv.zh...@intel.com
---
Documentation/kernel-parameters.txt |1 +
arch/x86/Kconfig.debug | 15 +++
arch
by the checkpatch.pl.
Signed-off-by: Lv Zheng lv.zh...@intel.com
Reviewed-by: Len Brown len.br...@intel.com
Reviewed-by: Rui Zhang rui.zh...@intel.com
Reviewed-by: Ying Huang ying.hu...@intel.com
Reviewed-by: Konrad Rzeszutek Wilk kon...@kernel.org
---
Documentation/kernel-parameters.txt |1 +
arch
Signed-off-by: Lv Zheng lv.zh...@intel.com
Reviewed-by: Feng Tang feng.t...@intel.com
---
Documentation/kernel-parameters.txt|1 +
arch/x86/Kconfig.debug | 23 +++
arch/x86/include/asm/mrst.h|2 +-
arch/x86/kernel/early_printk.c
by the kstrtoul in
the x86 specific booting codes. The kstrtoul will return error on
strings like acpi0,keep. This will leave one CodingStyle issue
reported by the checkpatch.pl.
Signed-off-by: Lv Zheng lv.zh...@intel.com
---
Documentation/kernel-parameters.txt |1 +
arch/x86/Kconfig.debug
earlycon (on CLOVERVIEW platforms):
Enable the following kernel configurations:
CONFIG_EARLY_PRINTK_ACPI=y
CONFIG_EARLY_PRINTK_INTEL_MID_SPI=y
Pass the following kernel parameter to the kernel:
earlyprintk=acpi
Signed-off-by: Lv Zheng lv.zh...@intel.com
---
Documentation
This utility is used as part of Linux ACPICA release process. It may be a
good idea to add it to kernel scripts, since it may be generally usefull for
verifying small kernel changes, like coding style cleanups etc.
Signed-off-by: Lv Zheng lv.zh...@intel.com
---
scripts/diffvmlinux.sh | 227
From: Lv Zheng lv.zh...@intel.com
ACPICA header files are lacking in stub protections. This makes all ACPICA
header files could only be included for CONFIG_ACPI=y environment. This
infects new ACPI prototypes, if such prototypes referenced ACPICA defined
types, they must be incldued only
From: Lv Zheng lv.zh...@intel.com
The header file acpi/acpi.h is the top level header for other kernel
subsystems to include. It contains environemnt settings and architecture
specific implementation that should be included before including other
ACPICA headers in order to keep a consistent
From: Lv Zheng lv.zh...@intel.com
This patch enfoces linux/acpi.h inclusion instead of direct
acpi/acpi_drivers.h and acpi/acpi_bus.h inclusions.
It's required that acpi/acpi_bus.h included prior than
acpi/acpi_drivers.h to find declarations for acpi_pci_root.
It is required that acpi/acpi.h
From: Lv Zheng lv.zh...@intel.com
This patch cleans up acpi/acpi.h inclusions.
1. For files where linux/acpi.h is already included, this patch cleans up
them by deleting acpi/acpi.h inclusions. Note that if acpi/acpi.h
is included before including linux/acpi.h in the original file
From: Lv Zheng lv.zh...@intel.com
As there is only CONFIG_ACPI=n processing in the linux/acpi.h, it is not
safe to include acpi/acpi.h, acpi/acpi_drivers.h and acpi/acpi_bus.h
directly for source out of Linux ACPI subsystems.
This patch adds error messaging to warn developers of such wrong
if (!acpi_disabled) will not be linked in.
This patch fixes this issue by introducing a stub for MCFG entry checker
is_acpi_reserved() in !CONFIG_ACPI builds.
Signed-off-by: Lv Zheng lv.zh...@intel.com
Cc: Bjorn Helgaas bhelg...@google.com
Cc: Len Brown l...@kernel.org
Cc: Feng Tang feng.t
...@redhat.com
Signed-off-by: Lv Zheng lv.zh...@intel.com
---
drivers/firmware/Kconfig |2 +-
include/linux/iscsi_ibft.h |2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index 0747872..a6ef6ac 100644
--- a/drivers/firmware
into
linux/acpi.h inclusions.
Doclink:
https://01.org/linuxgraphics/sites/default/files/documentation/acpi_igd_opregion_spec.pdf
Cc: Matthew Garrett mj...@srcf.ucam.org
Cc: Daniel Vetter daniel.vet...@ffwll.ch
Cc: intel-...@lists.freedesktop.org
Signed-off-by: Lv Zheng lv.zh...@intel.com
(Updated due to commit details attached.)
The patch in the linux-pm/linux-next queue is used as an experiment to
catch wrong ACPICA dependencies and inclusions:
Commit: 4e8fb7987f7d0390a2e74622c7c1cbb6760c6516
From: Lv Zheng lv.zh...@intel.com
Date: Tue, 3 Dec 2013 08:49:16 +0800
Subject
From: Lv Zheng lv.zh...@intel.com
In Linux kernel, ACPICA is wrapped and safely exported by CONFIG_ACPI. So
all external modules should depend on CONFIG_ACPI rather than using ACPICA
header directly for stubbing. But if we moves acpi/acpi.h inclusions
into #ifdef CONFIG_ACPI, build breakge can
: no previous prototype for
'sfi_acpi_table_parse' [-Wmissing-prototypes]
This patch fixes this existing issue. It is on top of the following
commit which doesn't take care about existing issues:
Commit: 4e8fb7987f7d0390a2e74622c7c1cbb6760c6516
From: Lv Zheng lv.zh...@intel.com
Date: Tue, 3 Dec 2013 08
Subject: [PATCH] ACPI: Clean up inclusions of ACPI header files
The reset 4 commits are rebased on top of this branch thus can be applied
to the branch directly.
Lv Zheng (6):
ACPI: Clean up incorrect inclusions of ACPICA headers
ACPI: Clean up inclusions of ACPI header files
SFI: Fix
: Matthew Garrett mj...@srcf.ucam.org
Acked-by: Daniel Vetter daniel.vet...@ffwll.ch
Cc: intel-...@lists.freedesktop.org
Signed-off-by: Lv Zheng lv.zh...@intel.com
---
drivers/acpi/apei/apei-base.c |1 -
drivers/acpi/apei/apei-internal.h |1 -
drivers/acpi/apei/ghes.c
declarations should always be included prior to any other
ACPI headers in CONFIG_ACPI builds. That also is taken care of including
linux/acpi.h as appropriate.
Signed-off-by: Lv Zheng lv.zh...@intel.com
Cc: Konrad Rzeszutek Wilk konrad.w...@oracle.com
Cc: Greg Kroah-Hartman gre...@linuxfoundation.org
Cc
...@redhat.com
Signed-off-by: Lv Zheng lv.zh...@intel.com
---
drivers/firmware/Kconfig |2 +-
include/linux/iscsi_ibft.h |2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index 0747872..a6ef6ac 100644
--- a/drivers/firmware
if (!acpi_disabled) will not be linked in.
This patch fixes this issue by introducing a stub for MCFG entry checker
is_acpi_reserved() in !CONFIG_ACPI builds.
Signed-off-by: Lv Zheng lv.zh...@intel.com
Cc: Bjorn Helgaas bhelg...@google.com
Cc: Len Brown l...@kernel.org
Cc: Feng Tang feng.t
and should not be included by other kernel files:
acpi/acpiosxf.h
acpi/acpixf.h
Clean up incorrect inclusions of these files from non-ACPICA source
files.
[rjw: Subject and changelog]
Signed-off-by: Lv Zheng lv.zh...@intel.com
Signed-off-by: Rafael J. Wysocki rafael.j.wyso...@intel.com
not to break users. The patch to make it default
disabled is also marked as RFC. We can determine if it is needed according
to the verification result.
References: https://bugzilla.kernel.org/show_bug.cgi?id=52191
References: http://www.spinics.net/lists/linux-acpi/msg49496.html
Lv Zheng (1):
ACPI
objects.
This patch disables it by default temporarily according to the bug reports.
References: http://www.spinics.net/lists/linux-acpi/msg49496.html
Reported-by: Valdis Kletnieks validis.kletni...@vt.edu
Reported-by: Sabrina Dubroka s...@queasysnail.net
Signed-off-by: Lv Zheng lv.zh...@intel.com
Kletnieks validis.kletni...@vt.edu
Reported-by: Sabrina Dubroka s...@queasysnail.net
Signed-off-by: Bob Moore robert.mo...@intel.com
Signed-off-by: Lv Zheng lv.zh...@intel.com
---
drivers/acpi/acpica/acobject.h |3 ++-
drivers/acpi/acpica/dsmethod.c | 24 +++-
2 files changed
port them to ACPICA upstream after merging them first into Linux.
Lv Zheng (2):
ACPICA: acpidump: Add sparse declarators support.
ACPICA: acpidump: Remove translation protection on integer types.
include/acpi/actypes.h | 64 +++
include/acpi
/u32/u64/s32/s64 definitions. Lv Zheng.
Signed-off-by: Lv Zheng lv.zh...@intel.com
Cc: Tony Luck tony.l...@intel.com
Cc: Fenghua Yu fenghua...@intel.com
---
include/acpi/actypes.h | 64 +++
include/acpi/platform/aclinux.h |2 ++
2 files changed
to be built with Linux kernel ACPICA header files
included. Lv Zheng.
Signed-off-by: Lv Zheng lv.zh...@intel.com
---
include/acpi/platform/aclinux.h | 10 ++
1 file changed, 10 insertions(+)
diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h
index 30c9a7c..f41f59b
There are bug-fixes for AML interpreter upstreamed, fixing some serious
issues found in recent platforms. These fixes make Linux AML interpreter
more ACPI 2.0 ASL concept compliant. Further AML interpreter fixes should
be based on such improvements, thus they are good materials for stable.
This
method should be aborted in this case. However,
ASLTS suite depends on this behavior.
Cc: sta...@vger.kernel.org # 3.8.x
Signed-off-by: Bob Moore robert.mo...@intel.com
Signed-off-by: Lv Zheng lv.zh...@intel.com
Signed-off-by: Rafael J. Wysocki rafael.j.wyso...@intel.com
---
drivers/acpi/acpica
in Windows7 but not
Windows8.
Cc: sta...@vger.kernel.org # 3.8.x: 3f654ba: ACPICA: Interpreter: Fix
Cc: sta...@vger.kernel.org # 3.8.x
Signed-off-by: Bob Moore robert.mo...@intel.com
Signed-off-by: Lv Zheng lv.zh...@intel.com
Signed-off-by: Rafael J. Wysocki rafael.j.wyso...@intel.com
---
drivers
...@intel.com
Signed-off-by: Lv Zheng lv.zh...@intel.com
---
drivers/acpi/acpica/exstore.c | 166 +
1 file changed, 102 insertions(+), 64 deletions(-)
diff --git a/drivers/acpi/acpica/exstore.c b/drivers/acpi/acpica/exstore.c
index 4ff37e8..cd7079d 100644
: 3f654ba: ACPICA: Interpreter: Fix
Cc: sta...@vger.kernel.org # 3.8.x: 63660e0: ACPICA: DeRefOf operator:
Cc: sta...@vger.kernel.org # 3.8.x
References: https://bugs.acpica.org/show_bug.cgi?id=431
Signed-off-by: Bob Moore robert.mo...@intel.com
Signed-off-by: Lv Zheng lv.zh...@intel.com
Signed-off
/acpi/acpi_bus.h should contain the declarations
that have references to some ACPICA defined types.
Signed-off-by: Lv Zheng lv.zh...@intel.com
Reviewed-by: Huang Ying ying.hu...@intel.com
---
drivers/acpi/acpi_ipmi.c | 16 ++--
drivers/acpi/osl.c | 224
in the response
handling codes.
This patch fixes this gap and also combines rx_data/tx_data to use single
data/len pair since they need not be seperated.
Signed-off-by: Lv Zheng lv.zh...@intel.com
Reviewed-by: Huang Ying ying.hu...@intel.com
---
drivers/acpi/acpi_ipmi.c | 100
This patch is only used for test purpose and should not be merged by any
public Linux kernel repositories.
This patch contains one driver that can drive a fake test device accessing
IPMI operation region fields.
Signed-off-by: Lv Zheng lv.zh...@intel.com
---
drivers/acpi/Kconfig | 68
if races
will happen.
Signed-off-by: Lv Zheng lv.zh...@intel.com
---
tools/testing/module-unloading/endless_cat.sh | 32 ++
tools/testing/module-unloading/endless_mod.sh | 81 +
2 files changed, 113 insertions(+)
create mode 100755 tools/testing/module
This is a trivial patch:
1. Deletes several useless header inclusions.
2. Kernel codes should always include linux/acpi.h instead of
acpi/acpi_bus.h or acpi/acpi_drivers.h where many conditional
declarations are handled.
Signed-off-by: Lv Zheng lv.zh...@intel.com
Reviewed-by: Huang Ying
This is a trivial patch:
1. Deletes duplicate Kconfig dependency as there is if IPMI_HANDLER
around IPMI_SI.
Signed-off-by: Lv Zheng lv.zh...@intel.com
Reviewed-by: Huang Ying ying.hu...@intel.com
---
drivers/acpi/Kconfig |3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git
in the reference counting style.
Authorship is also updated due to this design change.
Signed-off-by: Lv Zheng lv.zh...@intel.com
Cc: Zhao Yakui yakui.z...@intel.com
Reviewed-by: Huang Ying ying.hu...@intel.com
---
drivers/acpi/acpi_ipmi.c | 249 +++---
1
://bugzilla.kernel.org/show_bug.cgi?id=46741
Signed-off-by: Lv Zheng lv.zh...@intel.com
Cc: Zhao Yakui yakui.z...@intel.com
Reviewed-by: Huang Ying ying.hu...@intel.com
---
drivers/acpi/acpi_ipmi.c | 111 +++---
1 file changed, 55 insertions(+), 56 deletions
This is a trivial patch.
1. Changes dynamic mutex initialization to static initialization.
2. Removes one acpi_ipmi_init() variable initialization as it is not
needed.
Signed-off-by: Lv Zheng lv.zh...@intel.com
Reviewed-by: Huang Ying ying.hu...@intel.com
---
drivers/acpi/acpi_ipmi.c |7
on such platform. No
races can be found and the IPMI operation region handler is functioning
now. It is not possible to test module(ipmi_si) load/unload as it can't be
unloaded due to its' transfer flushing implementation.
Lv Zheng (13):
ACPI/IPMI: Fix potential response buffer overflow
ACPI/IPMI
() and tx_msg
accesses.
Calling smp_wmb() before setting msg_done flag so that messages completed
due to flushing will not be handled as 'done' messages while their contents
are not vaild.
Signed-off-by: Lv Zheng lv.zh...@intel.com
Cc: Zhao Yakui yakui.z...@intel.com
Reviewed-by: Huang Ying ying.hu
This is a trivial patch:
1. Deletes a member of the acpi_ipmi_device - smi_data which is not
actually used.
2. Updates a member of the acpi_ipmi_device - pnp_dev which is only used
by dev_warn() invocations, so changes it to struct device.
Signed-off-by: Lv Zheng lv.zh...@intel.com
Reviewed
3. with this patch applied, tx_msg_lock is always leaf:
irq_context: 0
[82767b40] buffer-mutex
[a00a66d8] s_active#107
[a07ecdc8] (ipmi_device-tx_msg_lock)-rlock
irq_context: 1
[a07ecdc8] (ipmi_device-tx_msg_lock)-rlock
Signed-off-by: Lv Zheng lv.zh
created by ACPI, performance of current
solution may be OK. It can be better via linking ipmi_recv_msg into an
RX message queue and process it in other contexts.
Signed-off-by: Lv Zheng lv.zh...@intel.com
Reviewed-by: Huang Ying ying.hu...@intel.com
---
drivers/acpi/acpi_ipmi.c | 24
.
Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=70891
Signed-off-by: Lv Zheng lv.zh...@intel.com
Reported-and-tested-by: Gareth Williams gar...@garethwilliams.me.uk
Tested-by: Steffen Weber steffen.we...@gmail.com
[zetalog: first affected by:]
Cc: sta...@vger.kernel.org # 2.6.11: 7c6db4e0: ACPI: EC
the availability of writing the first
command byte. A new command can utilize this flag to compete for the
right of accessing the underlying hardware.
Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=70891
Signed-off-by: Lv Zheng lv.zh...@intel.com
Reported-and-tested-by: Gareth Williams gar
=0 interrupt or timed
out and retried again in the task context.
This patch removes this seperate and duplicate IBF=0 waiter, by doing so,
we can reduce the overall number of times to access the EC_SC(R) status
register.
Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=70891
Signed-off-by: Lv
-curr is ensured to be !NULL.
After cleaning up, the EVT_SCI=1 check should be moved out of the wakeup
condition so that an EVT_SCI raised with (ec-curr == NULL) can trigger a
QR_SC command.
Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=70891
Signed-off-by: Lv Zheng lv.zh...@intel.com
Reported
:
Commit: 7c6db4e050601f359081fde418ca6dc4fc2d0011
Subject: ACPI: EC: do transaction from interrupt context
Signed-off-by: Lv Zheng lv.zh...@intel.com
---
drivers/acpi/ec.c | 15 +--
1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/drivers/acpi/ec.c b/drivers/acpi
Due to ACPI specificiation 5, chapter 5.6.4 General-Purpose Event Hnadling,
OSPMs need to disable GPE before clearing the status bit for edge-triggered
GPEs.
Signed-off-by: Lv Zheng lv.zh...@intel.com
Tested-by: Gareth Williams gar...@garethwilliams.me.uk
Tested-by: Steffen Weber steffen.we
Developers really don't need to translate EC_SC(R) in mind as long as the
field details are decoded in the debugging message.
Signed-off-by: Lv Zheng lv.zh...@intel.com
Tested-by: Gareth Williams gar...@garethwilliams.me.uk
Tested-by: Steffen Weber steffen.we...@gmail.com
---
drivers/acpi/ec.c
,
the other for the kernel versions that can have these stable materials
cleanly applied.
Lv Zheng (7):
ACPI/EC: Fix an issue that advance_transaction() processes stale
hardware status.
ACPI/EC: Add asynchronous command byte write support.
ACPI/EC: Remove duplicated ec_wait_ibf0() waiter
in assignment
(different address spaces)
drivers/acpi/acpica/tbxfroot.c:195:30: warning: incorrect type in argument 1
(different address spaces)
And ACPICA external usages are not affected.
[zetalog: based on linux-pm.git/bleeding-edge]
Signed-off-by: Lv Zheng lv.zh...@intel.com
---
drivers/acpi
From: Lv Zheng lv.zh...@intel.com
This series enable 64-bit addresses on top of linux-pm.git/linux-next.
Commit 0249ed2444d6 (ACPICA: Add option to favor 32-bit FADT addresses.)
breaks resuming from system-suspend on the Intel DP45SG board.
This is because the commit has changed the default
From: Lv Zheng lv.zh...@intel.com
This patch is generated to reduce source code differences between Linux and
ACPICA so that further sleep related modifications can be applied directly
without human interventions. Lv Zheng.
Signed-off-by: Lv Zheng lv.zh...@intel.com
Cc: Oswald Buddenhagen o
From: Lv Zheng lv.zh...@intel.com
The root cause of the reported bug might be one of the followings:
1. BIOS may favor the 64-bit firmware waking vector address when the
version of the FACS is greater than 0 and Linux currently only supports
resuming from the real mode, so the 64-bit
From: Lv Zheng lv.zh...@intel.com
This patch updates acpi_set_firmware_waking_vector() invocations in order
to keep 32-bit firmware waking vector favor for Linux.
64-bit firmware waking vector has never been enabled by Linux. The
(acpi_physical_address)0 for 64-bit address can be used to force
From: Lv Zheng lv.zh...@intel.com
With enough protections, this patch re-enables 64-bit FADT addresses by
default. If regressions are reported against such change, this patch should
be bisected and reverted.
Note that 64-bit FACS favor and 64-bit firmware waking vector favor are
excluded
From: Lv Zheng lv.zh...@intel.com
The root cause of the reported bug might be one of the followings:
1. BIOS may favor the 64-bit firmware waking vector address when the
version of the FACS is greater than 0 and Linux currently only supports
resuming from the real mode, so the 64-bit
From: Lv Zheng lv.zh...@intel.com
The root cause of the reported bug might be one of the followings:
1. BIOS may favor the 64-bit firmware waking vector address when the
version of the FACS is greater than 0 and Linux currently only supports
resuming from the real mode, so the 64-bit
All platform drivers
All ACPI drivers
4 DRM drivers that implement ACPI opregion
All buses with ACPI bindings
All cpufreq configurations
All xen configurations
All ACPI table drivers
Lv Zheng (4):
ACPICA: Linux headers: Remove ACPI_PREEMPTION_POINT() due to no
usages
of acpi/actypes.h can be
removed from acpi/platform/aclinux.h.
This patch also removes old ACPI_NATIVE_INTERFACE_HEADER mechanism which is
not preferred by Linux and adds the platform/acenvex.h to be the solution
to solve this issue. Lv Zheng.
Signed-off-by: Lv Zheng lv.zh...@intel.com
---
include
Since mis-order issues have been solved, we can cleanup redundant
definitions that already have defaults in acpi/platform/acenv.h.
This patch removes redudant environments for __KERNEL__ surrounded code.
Signed-off-by: Lv Zheng lv.zh...@intel.com
Cc: Tony Luck tony.l...@intel.com
Cc: Fenghua Yu
This patch deletes deprecated ACPI_PREEMPTION_POINT(), there is no user for
it in Linux kernel now. Lv Zheng.
Signed-off-by: Lv Zheng lv.zh...@intel.com
---
include/acpi/platform/aclinux.h | 14 --
1 file changed, 14 deletions(-)
diff --git a/include/acpi/platform/aclinux.h b
this issue.
Signed-off-by: Lv Zheng lv.zh...@intel.com
Cc: Tony Luck tony.l...@intel.com
Cc: Fenghua Yu fenghua...@intel.com
Cc: linux-i...@vger.kernel.org
Cc: Thomas Gleixner t...@linutronix.de
Cc: Ingo Molnar mi...@redhat.com
Cc: H. Peter Anvin h...@zytor.com
Cc: x...@kernel.org
---
arch/ia64/include
This patch fixes the following issue:
If DSDT is customized, no local DSDT copy is needed.
Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=69711
Signed-off-by: Lv Zheng lv.zh...@intel.com
Signed-off-by: Enrico Etxe Arte goitizena.gene...@gmail.com
Cc: sta...@vger.kernel.org # 2.6.35.x
/show_bug.cgi?id=3774
Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=69711
Original-by: Enrico Etxe Arte goitizena.gene...@gmail.com
Signed-off-by: Lv Zheng lv.zh...@intel.com
---
Documentation/kernel-parameters.txt | 10 --
drivers/acpi/Kconfig| 32
We need to find a smarter way to switch to 64-bit FADT addresses according
to the bug report. This patch reverts Linux to the original behavior.
Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=74021
Reported-by: Oswald Buddenhagen o...@kde.org
Signed-off-by: Lv Zheng lv.zh...@intel.com
From: Lv Zheng lv.zh...@intel.com
History:
v1:
The collection of bug-fixes from kernel bugzilla bug 70891.
v2:
1. Improves the patch descriptions to make the root cause of the 70891 bug
more correct.
2. Improves a race fix to make it more robust.
This patchset fixes the following issues
From: Lv Zheng lv.zh...@intel.com
This patch moves the first command byte write into advance_transaction() so
that all EC register accesses that can affect the command processing state
machine can happen in this asynchronous state machine advancement function.
The advance_transaction() function
From: Lv Zheng lv.zh...@intel.com
The advance_transaction() will be invoked from the IRQ context GPE handler
and the task context ec_poll(). The handling of this function is locked so
that the EC state machine are ensured to be advanced sequentially.
But there is a problem. Before invoking
From: Lv Zheng lv.zh...@intel.com
The bug fixes and asynchronous improvements have been done to the EC driver
by the previous commits. This patch increases the revision to 2.2 to
indicate the behavior differences between the old and the new drivers. The
copyright/authorship notices are also
From: Lv Zheng lv.zh...@intel.com
After we've added the first command byte write into advance_transaction(),
the IBF=0 waiter is duplicated with the command completion waiter
implemented in the ec_poll() because:
If IBF=1 blocked the first command byte write invoked in the task
context
From: Lv Zheng lv.zh...@intel.com
There is a race condition in ec_transaction_completed().
When ec_transaction_completed() is called in the GPE handler, it could
return true because of (ec-curr == NULL). Then the wake_up() invocation
could complete the next command unexpectedly since
From: Lv Zheng lv.zh...@intel.com
Developers really don't need to translate EC_SC(R) in mind as long as the
field details are decoded in the debugging message.
Signed-off-by: Lv Zheng lv.zh...@intel.com
Tested-by: Gareth Williams gar...@garethwilliams.me.uk
Tested-by: Steffen Weber steffen.we
From: Lv Zheng lv.zh...@intel.com
Due to ACPI specificiation 5, chapter 5.6.4 General-Purpose Event Hnadling,
OSPMs need to disable GPE before clearing the status bit for edge-triggered
GPEs.
Signed-off-by: Lv Zheng lv.zh...@intel.com
Tested-by: Gareth Williams gar...@garethwilliams.me.uk
Tested
The back port result of a divergence fix that the origianlly_enabled check
is not paired between acpi_install_gpe_handler() and
acpi_remove_gpe_handler(). Lv Zheng.
Signed-off-by: Lv Zheng lv.zh...@intel.com
---
drivers/acpi/acpica/evxface.c | 19 ++-
1 file changed, 14
implemented. Test results
show that the GPE APIs and EC GPE model are now safe for hotplug support.
Lv Zheng (9):
ACPICA: Events: Reduce indent divergences of events files.
ACPICA: Events: Fix an issue that GPE APIs cannot be invoked in
atomic context.
ACPICA: Events: Introduce acpi_set_gpe
. This driver provided lock is safe to be
held in the GPE handler by the driver.
Signed-off-by: Lv Zheng lv.zh...@intel.com
---
drivers/acpi/acpica/evxfgpe.c | 105 +
1 file changed, 105 insertions(+)
diff --git a/drivers/acpi/acpica/evxfgpe.c b/drivers/acpi
By using the 2 flags, we can indicate an inter-mediate state where the
current transactions should be completed while the new transactions should
be blocked.
Signed-off-by: Lv Zheng lv.zh...@intel.com
---
drivers/acpi/ec.c | 56 +++--
1 file
: + Stopping EC +
[ 24.950836] ACPI : EC: + EC stopped +
Signed-off-by: Lv Zheng lv.zh...@intel.com
---
drivers/acpi/ec.c | 82 ++---
1 file changed, 65 insertions(+), 17 deletions(-)
diff --git a/drivers/acpi/ec.c b/drivers/acpi
Developers really don't need to translate EC commands in mind. This patch
adds detailed debugging information for the EC commands.
The address can be found in the follow-up sequential EC_DATA(W) accesses,
thus this patch also removes some of the redundant address information.
Signed-off-by: Lv
This patch adds facility to test future EC modification.
All EC commits should enable TEST_HOTPLUG, and try a build/boot test.
Since EC is currently a built-in module, this is the only mean for us to
test the hotplug code.
Signed-off-by: Lv Zheng lv.zh...@intel.com
---
drivers/acpi/ec.c | 19
cases.
This patch adds reference counting for struct acpi_gpe_handler_info. Then the
GPE
handler can be safely invoked without holding the GPE lock, thus
facilitates GPE APIs to be invoked in any atomic environment. Lv Zheng.
Signed-off-by: Lv Zheng lv.zh...@intel.com
---
drivers/acpi/acpica
-off-by: Lv Zheng lv.zh...@intel.com
---
drivers/acpi/acpica/aclocal.h |4 ++--
drivers/acpi/acpica/evgpe.c | 18 +-
drivers/acpi/acpica/evxface.c |8
3 files changed, 15 insertions(+), 15 deletions(-)
diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi
by suspend/resume code, GPE status shouldn't be cleared, or a GPE
loss could happen when the driver relies on the interrupt mode.
With previous cleanup, all acpi_ev_enable_gpe() usages are removed, this patch
also removes this internal API. Lv Zheng.
Signed-off-by: Lv Zheng lv.zh...@intel.com
OSPMs like Linux trend to include all header files but leave empty inline
stub variables for a feature that is not configured during build.
This patch configures ACPICA external globals out and defines them into
immediates when CONFIG_ACPI is not enabled. Lv Zheng.
Known issues:
1. No possible
is generated in the assumption that all ACPICA OSL
APIs should only be used by ACPICA itself. While the real world is there
are some external ACPICA macros called ACPICA OSL APIs. This patch
doesn't include protections around the OSL APIs that are used by such
ACPICA external macros. Lv Zheng.
Signed-off
a .c file invoking all ACPICA globals,
functions, macros and built it with and without CONFIG_ACPI enabled.
Lv Zheng (15):
ACPICA: OSL: Add configurability mechanism for global variables.
ACPICA: Linux: Add configurability for external globals.
ACPICA: Linux: Add configurability for OSL APIs
This patch adds default 64-bit mathematics in aclinux.h using do_div. As
do_div can be used for all Linux architectures, this can also be used as
stub macros for ACPICA 64-bit mathematics.
Signed-off-by: Lv Zheng lv.zh...@intel.com
---
arch/ia64/include/asm/acenv.h |2 ++
arch/x86/include
this.
Signed-off-by: Lv Zheng lv.zh...@intel.com
---
arch/ia64/include/asm/acenv.h | 71 +++
arch/ia64/include/asm/acpi.h| 50 ---
arch/x86/include/asm/acenv.h| 66
arch/x86/include/asm
This patch removes acpi/acpi.h inclusions from linux/sfi_acpi.h as
linux/acpi.h has already included it for CONFIG_ACPI=n builds.
Cc: Bjorn Helgaas bhelg...@google.com
Cc: Len Brown l...@kernel.org
Cc: sfi-de...@simplefirmware.org
Cc: linux-...@vger.kernel.org
Signed-off-by: Lv Zheng lv.zh
There are global variables and functions not upstreamed to the ACPICA code
base. Such symbols still can referenced by external users as they are
listed in the acpixf.h. This patch uses ACPI_GLOBAL and
ACPI_EXTERNAL_RETURN_STATUS mechanism to add stub support for such symbols.
Signed-off-by: Lv
difficult as the linuxized commits will be messed up in
addition to the normal line offsettings by the patch/diff based utilities.
Lv Zheng.
Signed-off-by: Lv Zheng lv.zh...@intel.com
---
include/acpi/acpixf.h | 33 ++---
include/acpi/platform/aclinux.h
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