There must be no xtensa-specific syscalls from the kernel code: register
spilling uses call+entry sequence and atomics have proper function
implementations. Drop fast_syscall_xtensa.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
fuse_invalidate_attr() now sets fi->inval_mask instead of fi->i_time, hence
we need to check the inval mask in fuse_permission() as well.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Fixes: 2f1e81965f ("fuse: allow fine grained attr cache invaldation")
Commit ab2257e994 ("fuse: reduce size of struct fuse_inode") moved parts
of fields related to writeback on regular file and to directory caching
into a union. However fuse_fsync_common() called from fuse_dir_fsync()
touches some writeback related fields, resulting in a crash.
Move writeback related parts from fuse_fsync_common() to fuse_fysnc().
Reported-by: Brett Girton <btgirton@gmail.com>
Tested-by: Brett Girton <btgirton@gmail.com>
Fixes: ab2257e994 ("fuse: reduce size of struct fuse_inode")
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Important information is missing from user/admin cpuidle documentation
available today, so add a new user/admin document for cpuidle containing
current and comprehensive information to admin-guide and drop the old
.txt documents it is replacing.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Commit b244ffa15c ("drm/i915/gvt: Fix drm_format_mod value for vGPU
plane") introduced a regression issue to the tiled memory decoding on BDW.
This patch can fix this issue.
Here is the issue detail: https://github.com/intel/gvt-linux/issues/61
v1->v2:
- Refine the commit message. (Zhenyu)
Fixes: b244ffa15c8b("drm/i915/gvt: Fix drm_format_mod value for vGPU plane")
Signed-off-by: Tina Zhang <tina.zhang@intel.com>
Cc: stable@vger.kernel.org # v4.19+
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Add option for Allwinner ARMv5 SoCs and SoC F1C100s (which has a die
used for many new F-series products, including F1C100A, F1C100s, F1C200s,
F1C500, F1C600).
Signed-off-by: Mesih Kilinc <mesihkilinc@gmail.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Allwinner also has some ARMv5 SoCs.
In order to add support for them, check ARM_MULTI_V7 before enabling
ARMv7 SoC's. Add help text for ARCH_SUNXI menuconfig.
Signed-off-by: Mesih Kilinc <mesihkilinc@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Split the 10Kbytes CAN message RAM to be able to use simultaneously
FDCAN1 and FDCAN2 instances.
First 5Kbytes are allocated to FDCAN1 and last 5Kbytes are used for
FDCAN2. To do so, set the offset to 0x1400 in mram-cfg for FDCAN2.
Signed-off-by: Bich Hemon <bich.hemon@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
System call table generation script must be run to gener-
ate unistd_32.h and syscall_table.h files. This patch will
have changes which will invokes the script.
This patch will generate unistd_32.h and syscall_table.h
files by the syscall table generation script invoked by
xtensa/Makefile and the generated files against the removed
files must be identical.
The generated uapi header file will be included in uapi/-
asm/unistd.h and generated system call table header file
will be included by kernel/syscall.c file.
Signed-off-by: Firoz Khan <firoz.khan@linaro.org>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
The system call tables are in different format in all
architecture and it will be difficult to manually add,
modify or delete the syscall table entries in the res-
pective files. To make it easy by keeping a script and
which will generate the uapi header and syscall table
file. This change will also help to unify the implemen-
tation across all architectures.
The system call table generation script is added in
kernel/syscalls directory which contain the scripts to
generate both uapi header file and system call table
files. The syscall.tbl will be input for the scripts.
syscall.tbl contains the list of available system calls
along with system call number and corresponding entry
point. Add a new system call in this architecture will
be possible by adding new entry in the syscall.tbl file.
Adding a new table entry consisting of:
- System call number.
- ABI.
- System call name.
- Entry point name.
syscallhdr.sh and syscalltbl.sh will generate uapi header
unistd_32.h and syscall_table.h files respectively. Both
.sh files will parse the content syscall.tbl to generate
the header and table files. unistd_32.h will be included
by uapi/asm/unistd.h and syscall_table.h is included by
kernel/syscall.c - the real system call table.
ARM, s390 and x86 architecuture does have similar support.
I leverage their implementation to come up with a generic
solution.
Signed-off-by: Firoz Khan <firoz.khan@linaro.org>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
__NR_syscall_count macro holds the number of system call
exist in xtensa architecture. We have to change the value
of __NR_syscall_count, if we add or delete a system call.
One of the patch in this patch series has a script which
will generate a uapi header based on syscall.tbl file.
The syscall.tbl file contains the total number of system
calls information. So we have two option to update __NR-
_syscall_count value.
1. Update __NR_syscall_count in asm/unistd.h manually by
counting the no.of system calls. No need to update __NR-
_syscall_count until we either add a new system call or
delete existing system call.
2. We can keep this feature it above mentioned script,
that will count the number of syscalls and keep it in
a generated file. In this case we don't need to expli-
citly update __NR_syscall_count in asm/unistd.h file.
The 2nd option will be the recommended one. For that, I
added the __NR_syscalls macro in uapi/asm/unistd.h.
The macro __NR_syscalls also added for making the name
convention same across all architecture. While __NR_syscalls
isn't strictly part of the uapi, having it as part of the
generated header to simplifies the implementation. We also
need to enclose this macro with #ifdef __KERNEL__ to avoid
side effects.
Signed-off-by: Firoz Khan <firoz.khan@linaro.org>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
[Max: Drop __NR_syscall_count completely, use __NR_syscalls instead]
vmbus_process_offer() mustn't call channel->sc_creation_callback()
directly for sub-channels, because sc_creation_callback() ->
vmbus_open() may never get the host's response to the
OPEN_CHANNEL message (the host may rescind a channel at any time,
e.g. in the case of hot removing a NIC), and vmbus_onoffer_rescind()
may not wake up the vmbus_open() as it's blocked due to a non-zero
vmbus_connection.offer_in_progress, and finally we have a deadlock.
The above is also true for primary channels, if the related device
drivers use sync probing mode by default.
And, usually the handling of primary channels and sub-channels can
depend on each other, so we should offload them to different
workqueues to avoid possible deadlock, e.g. in sync-probing mode,
NIC1's netvsc_subchan_work() can race with NIC2's netvsc_probe() ->
rtnl_lock(), and causes deadlock: the former gets the rtnl_lock
and waits for all the sub-channels to appear, but the latter
can't get the rtnl_lock and this blocks the handling of sub-channels.
The patch can fix the multiple-NIC deadlock described above for
v3.x kernels (e.g. RHEL 7.x) which don't support async-probing
of devices, and v4.4, v4.9, v4.14 and v4.18 which support async-probing
but don't enable async-probing for Hyper-V drivers (yet).
The patch can also fix the hang issue in sub-channel's handling described
above for all versions of kernels, including v4.19 and v4.20-rc4.
So actually the patch should be applied to all the existing kernels,
not only the kernels that have 8195b1396e.
Fixes: 8195b1396e ("hv_netvsc: fix deadlock on hotplug")
Cc: stable@vger.kernel.org
Cc: Stephen Hemminger <sthemmin@microsoft.com>
Cc: K. Y. Srinivasan <kys@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
of_find_node_by_path() acquires a reference to the node
returned by it and that reference needs to be dropped by its caller.
This place is not doing this, so fix it.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Even if dsi->bridge is NULL, we still try to call drm_bridge_attach,
and print out an error message, before creating the connector.
When no bridge is provided, let's skip these 2 steps and directly
create the connector.
Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Signed-off-by: CK Hu <ck.hu@mediatek.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
It's wrong to mask/unmask highest bit in addr to translate the vaddr
to paddr. We should use PAGE_OFFSET and PHYS_OFFSET.
Wrong implement:
return ((get_pgd()|(1<<31)) - PHYS_OFFSET) & ~1;
When PHYS_OFFSET=0xc0000000 and get_pgd() return 0xe0000000, it'll
return 0x60000000. It's wrong and should be 0xa0000000.
Now correct it to:
return ((get_pgd() - PHYS_OFFSET) & ~1) + PAGE_OFFSET;
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
There are two intc drivers and two clocksource drivers, also include
related dt-bindings' documentations.
Change ren_guo@c-sky.com to guoren@kernel.org
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Document the bindings for I2C-based OCC hwmon device.
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
The OCC is a device embedded on a POWER processor that collects and
aggregates sensor data from the processor and system. The OCC can
provide the raw sensor data as well as perform thermal and power
management on the system.
This driver provides an atomic communications channel between a service
processor (e.g. a BMC) and the OCC. The driver is dependent on the FSI
SBEFIFO driver to get hardware access through the SBE to the OCC SRAM.
Commands are issued to the SBE to send or fetch data to the SRAM.
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Document the bindings for the FSI-attached POWER9 On-Chip Controller.
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
As per the usual standard with hwmon drivers the mapping to sysfs
entries follows the register map of the device e.g. in0_input
corresponds to the register 0x20, in1_input corresponds to 0x21 etc.
Hardware designers tend to work with input pins instead of registers
which is where things start to get confusing. A hardware designer might
say "the 1.5V rail is connected to the VCCP pin" leaving the software
designer none the wiser as to which of the sysfs entries should be
associated with the label "1.5V".
Try to bridge the gap by documenting the mapping of sysfs entries to
the corresponding pins. This should allow someone to create a
configuration file or other mapping without needing to dive into the
code and ADT datasheets.
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
struct attribute::name which this local variable name is eventually
assigned to is "const char*", and so is the template parameter. We might
as well preserve the constness all the way through.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
The ADM series of hotswap controllers support extending
the current measurement range by using a sensing resistor
value other than the typical 1 mOhm. For example, using a 0.5 mOhm
sensing resistor doubles the maximal current can be measured.
Current driver assumes a shunt resistor value of 1 mOhm in calculation,
meaning for other resistor values, hwmon will report scaled
current/power measurements. This patch parses device tree parameter
"shunt-resistor-micro-ohms", if there is one.
Signed-off-by: Kun Yi <kunyi@google.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
adm127x are hot-swap controllers that allow a circuit board to be removed from
or inserted into a live backplane. This patch adds the device tree
bindings documentation.
Signed-off-by: Kun Yi <kunyi@google.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Add initial version of device tree file for Facebook Backpack CMM
(Chasis Management Module) ast2500 BMC.
Signed-off-by: Tao Ren <taoren@fb.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>
This is the layout used by Facebook BMC systems. It describes the fixed
flash layout of a 32MB mtd device.
Signed-off-by: Tao Ren <taoren@fb.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>
The BMC can read the RTC battery voltage via ADC
channel 12.
Signed-off-by: Matt Spinler <spinler@linux.vnet.ibm.com>
Reviewed-by: Lei YU <mine260309@gmail.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Add iio-hwmon-battery using adc channel 12 and enable adc to make
adc running. This channel is used to read RTC battery voltage.
Note with Romulus hardware design, it requires GPIOR3 to be pulled
high to read the voltage, otherwise the reading is 0.
When GPIOR3 is high, it consumes battery and impacts the battery life.
So it is left for user space to toggle the GPIO when trying to read the
voltage.
Signed-off-by: Lei YU <mine260309@gmail.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>
This allows userspace to switch away from bitbanging to use kernel
FSI with the coprocessor.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Joel Stanley <joel@jms.id.au>
This replaces the FSI compatible with the ColdFire FSI compatible.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Volume is a little higher than usual due to a set of gpio fixes for
Davinci platforms that's been around a while, still seemed appropriate
to not hold off until next merge window.
Besides that it's the usual mix of minor fixes, mostly corrections of
small stuff in device trees.
Major stability-related one is the removal of a regulator from DT on
Rock960, since DVFS caused undervoltage. I expect it'll be restored once
they figure out the underlying issue.
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Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"Volume is a little higher than usual due to a set of gpio fixes for
Davinci platforms that's been around a while, still seemed appropriate
to not hold off until next merge window.
Besides that it's the usual mix of minor fixes, mostly corrections of
small stuff in device trees.
Major stability-related one is the removal of a regulator from DT on
Rock960, since DVFS caused undervoltage. I expect it'll be restored
once they figure out the underlying issue"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (28 commits)
MAINTAINERS: Remove unused Qualcomm SoC mailing list
ARM: davinci: dm644x: set the GPIO base to 0
ARM: davinci: da830: set the GPIO base to 0
ARM: davinci: dm355: set the GPIO base to 0
ARM: davinci: dm646x: set the GPIO base to 0
ARM: davinci: dm365: set the GPIO base to 0
ARM: davinci: da850: set the GPIO base to 0
gpio: davinci: restore a way to manually specify the GPIO base
ARM: davinci: dm644x: define gpio interrupts as separate resources
ARM: davinci: dm355: define gpio interrupts as separate resources
ARM: davinci: dm646x: define gpio interrupts as separate resources
ARM: davinci: dm365: define gpio interrupts as separate resources
ARM: davinci: da8xx: define gpio interrupts as separate resources
ARM: dts: at91: sama5d2: use the divided clock for SMC
ARM: dts: imx51-zii-rdu1: Remove EEPROM node
ARM: dts: rockchip: Remove @0 from the veyron memory node
arm64: dts: rockchip: Fix PCIe reset polarity for rk3399-puma-haikou.
arm64: dts: qcom: msm8998: Reserve gpio ranges on MTP
arm64: dts: sdm845-mtp: Reserve reserved gpios
arm64: dts: ti: k3-am654: Fix wakeup_uart reg address
...
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Merge tag 'for-linus-4.20a-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
- A revert of a previous commit as it is no longer necessary and has
shown to cause problems in some memory hotplug cases.
- Some small fixes and a minor cleanup.
- A patch for adding better diagnostic data in a very rare failure
case.
* tag 'for-linus-4.20a-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
pvcalls-front: fixes incorrect error handling
Revert "xen/balloon: Mark unallocated host memory as UNUSABLE"
xen: xlate_mmu: add missing header to fix 'W=1' warning
xen/x86: add diagnostic printout to xen_mc_flush() in case of error
x86/xen: cleanup includes in arch/x86/xen/spinlock.c
dmaengine fixes for v4.20-rc5
This contains two fixes to at_hdmac which fixes long standing bus
reported recently on serial transfers causing memory leak. These
fixes were done by Richard Genoud.
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Merge tag 'dmaengine-fix-4.20-rc5' of git://git.infradead.org/users/vkoul/slave-dma
Pull dmaengine fixes from Vinod Koul:
"This contains two fixes to at_hdmac which fixes long standing bus
reported recently on serial transfers causing memory leak. These fixes
were done by Richard Genoud"
* tag 'dmaengine-fix-4.20-rc5' of git://git.infradead.org/users/vkoul/slave-dma:
dmaengine: at_hdmac: fix module unloading
dmaengine: at_hdmac: fix memory leak in at_dma_xlate()
Frank Schreiner reported, that since kernel 4.18 he faces sysfs-warnings
when loading modules on a 32-bit kernel. Here is one such example:
sysfs: cannot create duplicate filename '/module/nfs/sections/.text'
CPU: 0 PID: 98 Comm: modprobe Not tainted 4.18.0-2-parisc #1 Debian 4.18.10-2
Backtrace:
[<1017ce2c>] show_stack+0x3c/0x50
[<107a7210>] dump_stack+0x28/0x38
[<103f900c>] sysfs_warn_dup+0x88/0xac
[<103f8b1c>] sysfs_add_file_mode_ns+0x164/0x1d0
[<103f9e70>] internal_create_group+0x11c/0x304
[<103fa0a0>] sysfs_create_group+0x48/0x60
[<1022abe8>] load_module.constprop.35+0x1f9c/0x23b8
[<1022b278>] sys_finit_module+0xd0/0x11c
[<101831dc>] syscall_exit+0x0/0x14
This warning gets triggered by the fact, that due to commit 24b6c22504
("parisc: Build kernel without -ffunction-sections") we now get multiple .text
sections in the kernel modules for which sysfs_create_group() can't create
multiple virtual files.
This patch works around the problem by re-enabling the -ffunction-sections
compiler option for modules, while keeping it disabled for the non-module
kernel code.
Reported-by: Frank Scheiner <frank.scheiner@web.de>
Fixes: 24b6c22504 ("parisc: Build kernel without -ffunction-sections")
Cc: <stable@vger.kernel.org> # v4.18+
Signed-off-by: Helge Deller <deller@gmx.de>
The aux->func_info and aux->btf are leaked in the error out cases
during bpf_prog_load(). This patch fixes it.
Fixes: ba64e7d852 ("bpf: btf: support proper non-jit func info")
Cc: Yonghong Song <yhs@fb.com>
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
