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git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull eventfs updates from Steven Rostedt:
- Remove "lookup" parameter of create_dir_dentry() and
create_file_dentry(). These functions were called by lookup and the
readdir logic, where readdir needed it to up the ref count of the
dentry but the lookup did not. A "lookup" parameter was passed in to
tell it what to do, but this complicated the code. It is better to
just always up the ref count and require the caller to decrement it,
even for lookup.
- Modify the .iterate_shared callback to not use the dcache_readdir()
logic and just handle what gets displayed by that one function. This
removes the need for eventfs to hijack the file->private_data from
the dcache_readdir() "cursor" pointer, and makes the code a bit more
sane
- Use the root and instance inodes for default ownership. Instead of
walking the dentry tree and updating each dentry gid, use the
getattr(), setattr() and permission() callbacks to set the ownership
and permissions using the root or instance as the default
- Some other optimizations with the eventfs iterate_shared logic
- Hard-code the inodes for eventfs to the same number for files, and
the same number for directories
- Have getdent() not create dentries/inodes in iterate_shared() as now
it has hard-coded inode numbers
- Use kcalloc() instead of kzalloc() on a list of elements
- Fix seq_buf warning and make static work properly.
* tag 'eventfs-v6.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
seq_buf: Make DECLARE_SEQ_BUF() usable
eventfs: Use kcalloc() instead of kzalloc()
eventfs: Do not create dentries nor inodes in iterate_shared
eventfs: Have the inodes all for files and directories all be the same
eventfs: Shortcut eventfs_iterate() by skipping entries already read
eventfs: Read ei->entries before ei->children in eventfs_iterate()
eventfs: Do ctx->pos update for all iterations in eventfs_iterate()
eventfs: Have eventfs_iterate() stop immediately if ei->is_freed is set
tracefs/eventfs: Use root and instance inodes as default ownership
eventfs: Stop using dcache_readdir() for getdents()
eventfs: Remove "lookup" parameter from create_dir/file_dentry()
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git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing updates from Steven Rostedt:
- Allow kernel trace instance creation to specify what events are
created
Inside the kernel, a subsystem may create a tracing instance that it
can use to send events to user space. This sub-system may not care
about the thousands of events that exist in eventfs. Allow the
sub-system to specify what sub-systems of events it cares about, and
only those events are exposed to this instance.
- Allow the ring buffer to be broken up into bigger sub-buffers than
just the architecture page size.
A new tracefs file called "buffer_subbuf_size_kb" is created. The
user can now specify a minimum size the sub-buffer may be in
kilobytes. Note, that the implementation currently make the
sub-buffer size a power of 2 pages (1, 2, 4, 8, 16, ...) but the user
only writes in kilobyte size, and the sub-buffer will be updated to
the next size that it will can accommodate it. If the user writes in
10, it will change the size to be 4 pages on x86 (16K), as that is
the next available size that can hold 10K pages.
- Update the debug output when a corrupt time is detected in the ring
buffer. If the ring buffer detects inconsistent timestamps, there's a
debug config options that will dump the contents of the meta data of
the sub-buffer that is used for debugging. Add some more information
to this dump that helps with debugging.
- Add more timestamp debugging checks (only triggers when the config is
enabled)
- Increase the trace_seq iterator to 2 page sizes.
- Allow strings written into tracefs_marker to be larger. Up to just
under 2 page sizes (based on what trace_seq can hold).
- Increase the trace_maker_raw write to be as big as a sub-buffer can
hold.
- Remove 32 bit time stamp logic, now that the rb_time_cmpxchg() has
been removed.
- More selftests were added.
- Some code clean ups as well.
* tag 'trace-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (29 commits)
ring-buffer: Remove stale comment from ring_buffer_size()
tracing histograms: Simplify parse_actions() function
tracing/selftests: Remove exec permissions from trace_marker.tc test
ring-buffer: Use subbuf_order for buffer page masking
tracing: Update subbuffer with kilobytes not page order
ringbuffer/selftest: Add basic selftest to test changing subbuf order
ring-buffer: Add documentation on the buffer_subbuf_order file
ring-buffer: Just update the subbuffers when changing their allocation order
ring-buffer: Keep the same size when updating the order
tracing: Stop the tracing while changing the ring buffer subbuf size
tracing: Update snapshot order along with main buffer order
ring-buffer: Make sure the spare sub buffer used for reads has same size
ring-buffer: Do no swap cpu buffers if order is different
ring-buffer: Clear pages on error in ring_buffer_subbuf_order_set() failure
ring-buffer: Read and write to ring buffers with custom sub buffer size
ring-buffer: Set new size of the ring buffer sub page
ring-buffer: Add interface for configuring trace sub buffer size
ring-buffer: Page size per ring buffer
ring-buffer: Have ring_buffer_print_page_header() be able to access ring_buffer_iter
ring-buffer: Check if absolute timestamp goes backwards
...
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git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull probes update from Masami Hiramatsu:
- Update the Kprobes trace event to show the actual function name in
notrace-symbol warning.
Instead of using the user specified symbol name, use "%ps" printk
format to show the actual symbol at the probe address. Since kprobe
event accepts the offset from symbol which is bigger than the symbol
size, the user specified symbol may not be the actual probed symbol.
* tag 'probes-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
trace/kprobe: Display the actual notrace function when rejecting a probe
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull more s390 updates from Alexander Gordeev:
- do not enable by default the support of 31-bit Enterprise Systems
Architecture (ESA) ELF binaries
- drop automatic CONFIG_KEXEC selection, while set CONFIG_KEXEC=y
explicitly for defconfig and debug_defconfig only
- fix zpci_get_max_io_size() to allow PCI block stores where normal PCI
stores were used otherwise
- remove unneeded tsk variable in do_exception() fault handler
- __load_fpu_regs() is only called from the core kernel code.
Therefore, remove not needed EXPORT_SYMBOL.
- remove leftover comment from s390_fpregs_set() callback
- few cleanups to Processor Activity Instrumentation (PAI) code (which
perf framework is based on)
- replace Wenjia Zhang with Thorsten Winkler as s390 Inter-User
Communication Vehicle (IUCV) networking maintainer
- Fix all scenarios where queues previously removed from a guest's
Adjunct-Processor (AP) configuration do not re-appear in a reset
state when they are subsequently made available to a guest again
* tag 's390-6.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/vfio-ap: do not reset queue removed from host config
s390/vfio-ap: reset queues associated with adapter for queue unbound from driver
s390/vfio-ap: reset queues filtered from the guest's AP config
s390/vfio-ap: let on_scan_complete() callback filter matrix and update guest's APCB
s390/vfio-ap: loop over the shadow APCB when filtering guest's AP configuration
s390/vfio-ap: always filter entire AP matrix
s390/net: add Thorsten Winkler as maintainer
s390/pai_ext: split function paiext_push_sample
s390/pai_ext: rework function paiext_copy argments
s390/pai: rework paiXXX_start and paiXXX_stop functions
s390/pai_crypto: split function paicrypt_push_sample
s390/pai: rework paixxxx_getctr interface
s390/ptrace: remove leftover comment
s390/fpu: remove __load_fpu_regs() export
s390/mm,fault: remove not needed tsk variable
s390/pci: fix max size calculation in zpci_memcpy_toio()
s390/kexec: do not automatically select KEXEC option
s390/compat: change default for CONFIG_COMPAT to "n"
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 TDX updates from Dave Hansen:
"This contains the initial support for host-side TDX support so that
KVM can run TDX-protected guests. This does not include the actual
KVM-side support which will come from the KVM folks. The TDX host
interactions with kexec also needs to be ironed out before this is
ready for prime time, so this code is currently Kconfig'd off when
kexec is on.
The majority of the code here is the kernel telling the TDX module
which memory to protect and handing some additional memory over to it
to use to store TDX module metadata. That sounds pretty simple, but
the TDX architecture is rather flexible and it takes quite a bit of
back-and-forth to say, "just protect all memory, please."
There is also some code tacked on near the end of the series to handle
a hardware erratum. The erratum can make software bugs such as a
kernel write to TDX-protected memory cause a machine check and
masquerade as a real hardware failure. The erratum handling watches
out for these and tries to provide nicer user errors"
* tag 'x86_tdx_for_6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
x86/virt/tdx: Make TDX host depend on X86_MCE
x86/virt/tdx: Disable TDX host support when kexec is enabled
Documentation/x86: Add documentation for TDX host support
x86/mce: Differentiate real hardware #MCs from TDX erratum ones
x86/cpu: Detect TDX partial write machine check erratum
x86/virt/tdx: Handle TDX interaction with sleep and hibernation
x86/virt/tdx: Initialize all TDMRs
x86/virt/tdx: Configure global KeyID on all packages
x86/virt/tdx: Configure TDX module with the TDMRs and global KeyID
x86/virt/tdx: Designate reserved areas for all TDMRs
x86/virt/tdx: Allocate and set up PAMTs for TDMRs
x86/virt/tdx: Fill out TDMRs to cover all TDX memory regions
x86/virt/tdx: Add placeholder to construct TDMRs to cover all TDX memory regions
x86/virt/tdx: Get module global metadata for module initialization
x86/virt/tdx: Use all system memory when initializing TDX module as TDX memory
x86/virt/tdx: Add skeleton to enable TDX on demand
x86/virt/tdx: Add SEAMCALL error printing for module initialization
x86/virt/tdx: Handle SEAMCALL no entropy error in common code
x86/virt/tdx: Make INTEL_TDX_HOST depend on X86_X2APIC
x86/virt/tdx: Define TDX supported page sizes as macros
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 SGX updates from Dave Hansen:
"This time, these are entirely confined to SGX selftests fixes.
The mini SGX enclave built by the selftests has garnered some
attention because it stands alone and does not need the sizable
infrastructure of the official SGX SDK. I think that's why folks are
suddently interested in cleaning it up.
- Clean up selftest compilation issues, mostly from non-gcc compilers
- Avoid building selftests when not on x86"
* tag 'x86_sgx_for_6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
selftests/sgx: Skip non X86_64 platform
selftests/sgx: Remove incomplete ABI sanitization code in test enclave
selftests/sgx: Discard unsupported ELF sections
selftests/sgx: Ensure expected location of test enclave buffer
selftests/sgx: Ensure test enclave buffer is entirely preserved
selftests/sgx: Fix linker script asserts
selftests/sgx: Handle relocations in test enclave
selftests/sgx: Produce static-pie executable for test enclave
selftests/sgx: Remove redundant enclave base address save/restore
selftests/sgx: Specify freestanding environment for enclave compilation
selftests/sgx: Separate linker options
selftests/sgx: Include memory clobber for inline asm in test enclave
selftests/sgx: Fix uninitialized pointer dereferences in encl_get_entry
selftests/sgx: Fix uninitialized pointer dereference in error path
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git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf
Pablo Neira Ayuso says:
====================
Netfilter fixes for net
The following batch contains Netfilter fixes for net. Slightly larger
than usual because this batch includes several patches to tighten the
nf_tables control plane to reject inconsistent configuration:
1) Restrict NFTA_SET_POLICY to NFT_SET_POL_PERFORMANCE and
NFT_SET_POL_MEMORY.
2) Bail out if a nf_tables expression registers more than 16 netlink
attributes which is what struct nft_expr_info allows.
3) Bail out if NFT_EXPR_STATEFUL provides no .clone interface, remove
existing fallback to memcpy() when cloning which might accidentally
duplicate memory reference to the same object.
4) Fix br_netfilter interaction with neighbour layer. This requires
three preparation patches:
- Use nf_bridge_get_physinif() in nfnetlink_log
- Use nf_bridge_info_exists() to check in br_netfilter context
is available in nf_queue.
- Pass net to nf_bridge_get_physindev()
And finally, the fix which replaces physindev with physinif
in nf_bridge_info.
Patches from Pavel Tikhomirov.
5) Catch-all deactivation happens in the transaction, hence this
oneliner to check for the next generation. This bug uncovered after
the removal of the _BUSY bit, which happened in set elements back in
summer 2023.
6) Ensure set (total) key length size and concat field length description
is consistent, otherwise bail out.
7) Skip set element with the _DEAD flag on from the netlink dump path.
A tests occasionally shows that dump is mismatching because GC might
lose race to get rid of this element while a netlink dump is in
progress.
8) Reject NFT_SET_CONCAT for field_count < 1.
9) Use IP6_INC_STATS in ipvs to fix preemption BUG splat, patch
from Fedor Pchelkin.
* tag 'nf-24-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf:
ipvs: avoid stat macros calls from preemptible context
netfilter: nf_tables: reject NFT_SET_CONCAT with not field length description
netfilter: nf_tables: skip dead set elements in netlink dump
netfilter: nf_tables: do not allow mismatch field size and set key length
netfilter: nf_tables: check if catch-all set element is active in next generation
netfilter: bridge: replace physindev with physinif in nf_bridge_info
netfilter: propagate net to nf_bridge_get_physindev
netfilter: nf_queue: remove excess nf_bridge variable
netfilter: nfnetlink_log: use proper helper for fetching physinif
netfilter: nft_limit: do not ignore unsupported flags
netfilter: nf_tables: bail out if stateful expression provides no .clone
netfilter: nf_tables: validate .maxattr at expression registration
netfilter: nf_tables: reject invalid set policy
====================
Link: https://lore.kernel.org/r/20240118161726.14838-1-pablo@netfilter.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Renesas is solely funding my I2C maintenance meanwhile, give them credit
for that by using this email address.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
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The stm32mp25 has only a single interrupt line used for both
events and errors. In order to cope with that, reorganise the
error handling code so that it can be called either from the
common handler (used in case of SoC having only a single IT line)
and the error handler for others.
The CR1 register also embeds a new FMP bit, necessary when running
at Fast Mode Plus frequency. This bit should be used instead of
the SYSCFG bit used on other platforms.
Add a new compatible to distinguish between the SoCs and two
boolean within the setup structure in order to know if the
platform has a single/multiple IT lines and if the FMP bit
within CR1 is available or not.
Signed-off-by: Valentin Caron <valentin.caron@foss.st.com>
Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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Move readl_relaxed of I2C_ISR register at beginning of event isr
so that it done once for both master & slave handling.
Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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Add a new compatible st,stm32mp25-i2c for the STM32MP25 series which
has only one interrupt line for both events and errors and differs in
term of handling of FastModePlus.
Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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Avoid usage of __func__ when reporting an error message
since dev_err/dev_dbg are already providing enough details
to identify the source of the message.
Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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The irq handling is currently split between the irq handler
and the threaded irq handler. Some of the handling (such as
dma related stuffs) done within the irq handler might sleep or
take some time leading to issues if the kernel is built with
realtime constraints. In order to fix that, perform an overall
rework to perform most of the job within the threaded handler
and only keep fifo access in the non threaded handler.
Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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Convert error handling upon calls of devm_request_irq functions during
the probe of the driver.
Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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On the Dell XPS 15 7590/0VYV0G, BIOS 1.24.0 09/11/2023, Linux prints the
warning below.
i801_smbus 0000:00:1f.4: Accelerometer lis3lv02d is present on SMBus but its address is unknown, skipping registration
Following the same suggestions by Wolfram Sang as for the Dell Precision
3540 [1], the accelerometer can be successfully found on I2C bus 2 at
address 0x29.
$ echo lis3lv02d 0x29 | sudo tee /sys/bus/i2c/devices/i2c-2/new_device
lis3lv02d 0x29
$ dmesg | tail -5
[ 549.522876] lis3lv02d_i2c 2-0029: supply Vdd not found, using dummy regulator
[ 549.522904] lis3lv02d_i2c 2-0029: supply Vdd_IO not found, using dummy regulator
[ 549.542486] lis3lv02d: 8 bits 3DC sensor found
[ 549.630022] input: ST LIS3LV02DL Accelerometer as /devices/platform/lis3lv02d/input/input35
[ 549.630586] i2c i2c-2: new_device: Instantiated device lis3lv02d at 0x29
So, the device has that accelerometer. Add the I2C address to the
mapping list, and test it successfully on the device.
[1]: https://lore.kernel.org/linux-i2c/97708c11-ac85-fb62-2c8e-d37739ca826f@molgen.mpg.de/
Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
Acked-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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On the Dell Precision 3540/0M14W7, BIOS 1.7.4 05/12/2020, Linux prints
the warning below.
i801_smbus 0000:00:1f.4: Accelerometer lis3lv02d is present on SMBus but its address is unknown, skipping registration
With the help of Wolfram Sang, the test to probe it on I2C bus 6 at address
0x29 was successful.
$ echo lis3lv02d 0x29 | sudo tee /sys/bus/i2c/devices/i2c-6/new_device
[ 2110.787000] i2c i2c-6: new_device: Instantiated device lis3lv02d at 0x29
[ 2110.791932] lis3lv02d_i2c 6-0029: supply Vdd not found, using dummy regulator
[ 2110.791981] lis3lv02d_i2c 6-0029: supply Vdd_IO not found, using dummy regulator
[ 2110.809233] lis3lv02d: 8 bits 3DC sensor found
[ 2110.900668] input: ST LIS3LV02DL Accelerometer as /devices/platform/lis3lv02d/input/input23
So, the device has that accelerometer. Add the I2C address to the
mapping list.
Link: https://lore.kernel.org/linux-i2c/97708c11-ac85-fb62-2c8e-d37739ca826f@molgen.mpg.de/
Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
Acked-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
[wsa: shortened commit message a little]
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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These Settings for the same register, REG_CR,
can be put together to reduce code redundancy.
Signed-off-by: Hans Hu <hanshu-oc@zhaoxin.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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Use more appropriate parameter passing to reduce the amount of code
Signed-off-by: Hans Hu <hanshu-oc@zhaoxin.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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The frequency setting mode is adjusted to reduce the code redundancy,
and it is also convenient to share with zhaoxin
Signed-off-by: Hans Hu <hanshu-oc@zhaoxin.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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Put the handling of interrupt events in a function class
to reduce code redundancy.
Signed-off-by: Hans Hu <hanshu-oc@zhaoxin.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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Put wmt_i2c_wait_bus_not_busy() in a more appropriate place
to reduce code redundancy
Signed-off-by: Hans Hu <hanshu-oc@zhaoxin.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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Legacy class-based device auto-detection shouldn't be used in new code.
Therefore remove support in i2c-mux-reg as long as we don't have a
user of this feature yet.
Link: https://lore.kernel.org/linux-i2c/a22978a4-88e4-46f4-b71c-032b22321599@gmail.com/
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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Now that the driver core can properly handle constant struct bus_type,
move the i2c_bus_type variable to be a constant structure as well, placing
it into read-only memory which can not be modified at runtime.
Note, the sound/soc/rockchip/rk3399_gru_sound.c also needed tweaking as
it decided to save off a pointer to a bus type for internal stuff, and
it was using the i2c_bus_type as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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Add compatible for ROHM Semiconductor BR24G04 EEPROMs.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Roland Hieber <rhi@pengutronix.de>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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This driver does not depend on CONFIG_OF so using of_match_ptr() makes
sense to reduce the size a bit.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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sparse reports an error on some data that gets converted from be32.
That's because that data is typed u32 instead of __be32.
The type is correct, the be32_to_cpu() conversion is not.
Remove the conversion.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202312042210.QL4DA8Av-lkp@intel.com/
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Acked-By: Jochen Friedrich <jochen@scram.de>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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Both i2c_generic_scl_recovery() and the debug output indicate that SDA is
purely optional for bus recovery. But devm_gpiod_get() never returns NULL
making it mandatory. Fix this by calling devm_gpiod_get_optional instead.
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Reviewed-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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I originally restricted i2c_register_spd() to only support systems
with up to 4 memory slots, so that we can experiment with it on
a limited numbers of systems. It's been more than 3 years and it
seems to work just fine, so the time has come to lift this arbitrary
limitation.
The maximum number of memory slots which can be connected to a single
I2C segment is 8, so support that many SPD EEPROMs. Any system with
more than 8 memory slots would have either multiple SMBus channels
or SMBus multiplexing, so it would need dedicated care. We'll get to
that later as needed.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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Rockchip RV1126 is using old style i2c controller, the i2c2
bus uses a non-sequential offset in the grf register for the
mask/value bits for this bus.
This patch fixes i2c2 bus on rv1126 SoCs.
Signed-off-by: Tim Lunn <tim@feathertop.org>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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Add support for atomic transfers using polling mode with interrupts
intentionally disabled to get rid of the following warning introduced by
commit 63b96983a5dd ("i2c: core: introduce callbacks for atomic
transfers") during system reboot and power-off:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1518 at drivers/i2c/i2c-core.h:40 i2c_transfer+0xe8/0xf4
No atomic I2C transfer handler for 'i2c-0'
...
---[ end trace 0000000000000000 ]---
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Chanho Park <chanho61.park@samsung.com>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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To properly handle ACK on the bus when transferring more than one
message in polling mode, move the polling handling loop from
s3c24xx_i2c_message_start() to s3c24xx_i2c_doxfer(). This way
i2c_s3c_irq_nextbyte() is always executed till the end, properly
acknowledging the IRQ bits and no recursive calls to
i2c_s3c_irq_nextbyte() are made.
While touching this, also fix finishing transfers in polling mode by
using common code path and always waiting for the bus to become idle
and disabled.
Fixes: 117053f77a5a ("i2c: s3c2410: Add polling mode support")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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To properly handle read transfers in polling mode, no waiting for the ACK
state is needed as it will never come. Just wait a bit to ensure start
state is on the bus and continue processing next bytes.
Fixes: 117053f77a5a ("i2c: s3c2410: Add polling mode support")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Chanho Park <chanho61.park@samsung.com>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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To support FM+, we mainly need to turn the SMD constant into a parameter
and set it accordingly. That also means we can finally fix SMD to our
needs instead of bailing out. A sanity check for SMD then becomes a
sanity check for 'x == 0'. After all that, activating the enable bit for
FM+ is all we need to do. Tested with a Renesas Falcon board using R-Car
V3U.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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So far, we treated Gen4 as Gen3. But we are soon adding FM+ as a Gen4
specific feature, so prepare the code for the new devtype.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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The I2C core now provides a per-adapter debugfs directory. Use it
instead of creating a custom one.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Tali Perry <tali.perry1@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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The I2C core now provides a per-adapter debugfs directory. Use it
instead of creating a custom one.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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Two drivers already implement custom debugfs handling for their
i2c_adapter and more will come. So, let the core create a debugfs
directory per adapter and pass that to drivers for their debugfs files.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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they support I2C_CLASS_HWMON
After removal of the legacy eeprom driver the only remaining I2C
client device driver supporting I2C_CLASS_SPD is jc42. Because this
driver also supports I2C_CLASS_HWMON, adapters don't have to
declare support for I2C_CLASS_SPD if they support I2C_CLASS_HWMON.
It's one step towards getting rid of I2C_CLASS_SPD mid-term.
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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they support I2C_CLASS_HWMON
After removal of the legacy eeprom driver the only remaining I2C
client device driver supporting I2C_CLASS_SPD is jc42. Because this
driver also supports I2C_CLASS_HWMON, adapters don't have to
declare support for I2C_CLASS_SPD if they support I2C_CLASS_HWMON.
It's one step towards getting rid of I2C_CLASS_SPD mid-term.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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support I2C_CLASS_HWMON
After removal of the legacy eeprom driver the only remaining I2C
client device driver supporting I2C_CLASS_SPD is jc42. Because this
driver also supports I2C_CLASS_HWMON, adapters don't have to
declare support for I2C_CLASS_SPD if they support I2C_CLASS_HWMON.
It's one step towards getting rid of I2C_CLASS_SPD mid-term.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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I2C_CLASS_HWMON
After removal of the legacy eeprom driver the only remaining I2C
client device driver supporting I2C_CLASS_SPD is jc42. Because this
driver also supports I2C_CLASS_HWMON, adapters don't have to
declare support for I2C_CLASS_SPD if they support I2C_CLASS_HWMON.
It's one step towards getting rid of I2C_CLASS_SPD mid-term.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Andi Shyti <andi.shyti@kernel.org>
Acked-by: Jim Cromie <jim.cromie@gmail.com> # for SCX
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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I2C_CLASS_SPD was used to expose the EEPROM content to user space,
via the legacy eeprom driver. Now that this driver has been removed,
we can remove I2C_CLASS_SPD support. at24 driver with explicit
instantiation should be used instead.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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After removal of the legacy EEPROM driver and I2C_CLASS_DDC support in
olpc_dcon there's no i2c client driver left supporting I2C_CLASS_DDC.
Class-based device auto-detection is a legacy mechanism and shouldn't
be used in new code. So we can remove this class completely now.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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After removal of the legacy EEPROM driver and I2C_CLASS_DDC support in
olpc_dcon there's no i2c client driver left supporting I2C_CLASS_DDC.
Class-based device auto-detection is a legacy mechanism and shouldn't
be used in new code. So we can remove this class completely now.
Acked-by: Helge Deller <deller@gmx.de>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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After removal of the legacy EEPROM driver and I2C_CLASS_DDC support in
olpc_dcon there's no i2c client driver left supporting I2C_CLASS_DDC.
Class-based device auto-detection is a legacy mechanism and shouldn't
be used in new code. So we can remove this class completely now.
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fix from Ingo Molnar:
"Fix a cpufreq related performance regression on certain systems, where
the CPU would remain at the lowest frequency, degrading performance
substantially"
* tag 'sched-urgent-2024-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/fair: Fix frequency selection for non-invariant case
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB / Thunderbolt updates from Greg KH:
"Here is the big set of USB and Thunderbolt changes for 6.8-rc1.
Included in here are the following:
- Thunderbolt subsystem and driver updates for USB 4 hardware and
issues reported by real devices
- xhci driver updates
- dwc3 driver updates
- uvc_video gadget driver updates
- typec driver updates
- gadget string functions cleaned up
- other small changes
All of these have been in the linux-next tree for a while with no
reported issues"
* tag 'usb-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (169 commits)
usb: typec: tipd: fix use of device-specific init function
usb: typec: tipd: Separate reset for TPS6598x
usb: mon: Fix atomicity violation in mon_bin_vma_fault
usb: gadget: uvc: Remove nested locking
usb: gadget: uvc: Fix use are free during STREAMOFF
usb: typec: class: fix typec_altmode_put_partner to put plugs
dt-bindings: usb: dwc3: Limit num-hc-interrupters definition
dt-bindings: usb: xhci: Add num-hc-interrupters definition
xhci: add support to allocate several interrupters
USB: core: Use device_driver directly in struct usb_driver and usb_device_driver
arm64: dts: mediatek: mt8195: Add 'rx-fifo-depth' for cherry
usb: xhci-mtk: fix a short packet issue of gen1 isoc-in transfer
dt-bindings: usb: mtk-xhci: add a property for Gen1 isoc-in transfer issue
arm64: dts: qcom: msm8996: Remove PNoC clock from MSS
arm64: dts: qcom: msm8996: Remove AGGRE2 clock from SLPI
arm64: dts: qcom: msm8998: Remove AGGRE2 clock from SLPI
arm64: dts: qcom: msm8939: Drop RPM bus clocks
arm64: dts: qcom: sdm630: Drop RPM bus clocks
arm64: dts: qcom: qcs404: Drop RPM bus clocks
arm64: dts: qcom: msm8996: Drop RPM bus clocks
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty / serial updates from Greg KH:
"Here is the big set of tty and serial driver changes for 6.8-rc1.
As usual, Jiri has a bunch of refactoring and cleanups for the tty
core and drivers in here, along with the usual set of rs485 updates
(someday this might work properly...)
Along with those, in here are changes for:
- sc16is7xx serial driver updates
- platform driver removal api updates
- amba-pl011 driver updates
- tty driver binding updates
- other small tty/serial driver updates and changes
All of these have been in linux-next for a while with no reported
issues"
* tag 'tty-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (197 commits)
serial: sc16is7xx: refactor EFR lock
serial: sc16is7xx: reorder code to remove prototype declarations
serial: sc16is7xx: refactor FIFO access functions to increase commonality
serial: sc16is7xx: drop unneeded MODULE_ALIAS
serial: sc16is7xx: replace hardcoded divisor value with BIT() macro
serial: sc16is7xx: add explicit return for some switch default cases
serial: sc16is7xx: add macro for max number of UART ports
serial: sc16is7xx: add driver name to struct uart_driver
serial: sc16is7xx: use i2c_get_match_data()
serial: sc16is7xx: use spi_get_device_match_data()
serial: sc16is7xx: use DECLARE_BITMAP for sc16is7xx_lines bitfield
serial: sc16is7xx: improve do/while loop in sc16is7xx_irq()
serial: sc16is7xx: remove obsolete loop in sc16is7xx_port_irq()
serial: sc16is7xx: set safe default SPI clock frequency
serial: sc16is7xx: add check for unsupported SPI modes during probe
serial: sc16is7xx: fix invalid sc16is7xx_lines bitfield in case of probe error
serial: 8250_exar: Set missing rs485_supported flag
serial: omap: do not override settings for RS485 support
serial: core, imx: do not set RS485 enabled if it is not supported
serial: core: make sure RS485 cannot be enabled when it is not supported
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver updates from Greg KH:
"Here is the "big" set of staging driver changes for 6.8-rc1. It's not
really that big this release cycle, not much happened except for 186
patches of coding style cleanups. The majority was in the rtl8192e
driver, but there are other smaller changes in a few other staging
drivers, full details in the shortlog.
All of these have been in linux-next for a while with no reported
issues"
* tag 'staging-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (186 commits)
Staging: rtl8192e: Rename variable OpMode
Staging: rtl8192e: Rename variable bIsAggregateFrame
Staging: rtl8192e: Rename function rtllib_EnableNetMonitorMode()
Staging: rtl8192e: Rename variable NumRxOkInPeriod
Staging: rtl8192e: Rename variable NumTxOkInPeriod
Staging: rtl8192e: Rename variable bUsed
staging: vme_user: print more detailed infomation when an error occurs
Staging: rtl8192e: Rename function rtllib_DisableNetMonitorMode()
Staging: rtl8192e: Rename variable bInitState
Staging: rtl8192e: Rename variable skb_waitQ
Staging: rtl8192e: Rename variable BasicRate
Staging: rtl8192e: Rename variable QueryRate
Staging: rtl8192e: Rename function rtllib_TURBO_Info()
Staging: rtl8192e: Rename function rtllib_WMM_Info()
Staging: rtl8192e: Rename function rtllib_MFIE_Grate()
Staging: rtl8192e: Rename function rtllib_MFIE_Brate()
Staging: rtl8192e: Fixup statement broken across 2 lines in rtllib_softmac_new_net()
Staging: rtl8192e: Fixup statement broken across 2 lines in rtllib_softmac_xmit()
Staging: rtl8192e: Fix function definition broken across multiple lines
Staging: rtl8192e: Fix statement broken across 2 lines in rtllib_rx_assoc_resp()
...
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https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Daniel Borkmann says:
====================
pull-request: bpf 2024-01-18
We've added 10 non-merge commits during the last 5 day(s) which contain
a total of 12 files changed, 806 insertions(+), 51 deletions(-).
The main changes are:
1) Fix an issue in bpf_iter_udp under backward progress which prevents
user space process from finishing iteration, from Martin KaFai Lau.
2) Fix BPF verifier to reject variable offset alu on registers with a type
of PTR_TO_FLOW_KEYS to prevent oob access, from Hao Sun.
3) Follow up fixes for kernel- and libbpf-side logic around handling
arg:ctx tagged arguments of BPF global subprogs, from Andrii Nakryiko.
* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
libbpf: warn on unexpected __arg_ctx type when rewriting BTF
selftests/bpf: add tests confirming type logic in kernel for __arg_ctx
bpf: enforce types for __arg_ctx-tagged arguments in global subprogs
bpf: extract bpf_ctx_convert_map logic and make it more reusable
libbpf: feature-detect arg:ctx tag support in kernel
selftests/bpf: Add test for alu on PTR_TO_FLOW_KEYS
bpf: Reject variable offset alu on PTR_TO_FLOW_KEYS
selftests/bpf: Test udp and tcp iter batching
bpf: Avoid iter->offset making backward progress in bpf_iter_udp
bpf: iter_udp: Retry with a larger batch size without going back to the previous bucket
====================
Link: https://lore.kernel.org/r/20240118153936.11769-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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