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1,188,286 commits

Author SHA1 Message Date
Uwe Kleine-König
94214f145b soc: bcm: bcm2835-power: Drop empty platform remove function
A remove callback just returning 0 is equivalent to no remove callback
at all. So drop the useless function.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20221212222549.3779846-2-u.kleine-koenig@pengutronix.de
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2023-01-10 13:46:28 -08:00
Maxime Ripard
a1904fa4df firmware: raspberrypi: Fix type assignment
We silently cast an unsigned int into a __le32 which makes sparse
complain. Moreover, we never actually convert endianness between the
CPU's and the expected little-endian value. Fix both at once by calling
cpu_to_le32().

Fixes: 40c31955e4 ("firmware: raspberrypi: Provide a helper to query a clock max rate")
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/r/20221116091712.1309651-3-maxime@cerno.tech
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20230102115255.17802-1-maxime@cerno.tech
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2023-01-10 13:44:04 -08:00
Krzysztof Kozlowski
b76e1186a6 arm64: dts: broadcom: align SMMU node names with DT schema
DT schema expects certain pattern for IOMMU/SMMU nodes:

  northstar2/ns2-svk.dtb: mmu@64000000: $nodename:0: 'mmu@64000000' does not match '^iommu@[0-9a-f]*'

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Ray Jui <ray.jui@broadcom.com>
Link: https://lore.kernel.org/r/20221222092456.79203-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2023-01-10 13:43:25 -08:00
Ammar Faizi
a290296ab8 selftests/nolibc: Add getpagesize(2) selftest
Test the getpagesize() function. Make sure it returns the correct
value.

Signed-off-by: Ammar Faizi <ammarfaizi2@gnuweeb.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2023-01-10 13:33:56 -08:00
Ammar Faizi
7efd762e97 nolibc/sys: Implement getpagesize(2) function
This function returns the page size used by the running kernel. The
page size value is taken from the auxiliary vector at 'AT_PAGESZ' key.

'getpagesize(2)' is assumed as a syscall becuase the manpage placement
of this function is in entry 2 ('man 2 getpagesize') despite there is
no real 'getpagesize(2)' syscall in the Linux syscall table. Define
this function in 'sys.h'.

Signed-off-by: Ammar Faizi <ammarfaizi2@gnuweeb.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2023-01-10 13:33:56 -08:00
Ammar Faizi
c61a078015 nolibc/stdlib: Implement getauxval(3) function
Previous commits save the address of the auxiliary vector into a global
variable @_auxv. This commit creates a new function 'getauxval()' as a
helper function to get the auxv value based on the given key.

The behavior of this function is identic with the function documented
in 'man 3 getauxval'. This function is also needed to implement
'getpagesize()' function that we will wire up in the next patches.

Signed-off-by: Ammar Faizi <ammarfaizi2@gnuweeb.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2023-01-10 13:33:56 -08:00
Sven Schnelle
241c4b4e02 tools/nolibc: add auxiliary vector retrieval for s390
In the _start block we now iterate over envp to find the auxiliary
vector after the NULL. The pointer is saved into an _auxv variable
that is marked as weak so that it's accessible from multiple units.

Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2023-01-10 13:33:56 -08:00
Willy Tarreau
d01869cf1e tools/nolibc: add auxiliary vector retrieval for mips
In the _start block we now iterate over envp to find the auxiliary
vector after the NULL. The pointer is saved into an _auxv variable
that is marked as weak so that it's accessible from multiple units.

Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2023-01-10 13:33:56 -08:00
Willy Tarreau
041fa97cb3 tools/nolibc: add auxiliary vector retrieval for riscv
In the _start block we now iterate over envp to find the auxiliary
vector after the NULL. The pointer is saved into an _auxv variable
that is marked as weak so that it's accessible from multiple units.
It was tested on riscv64 only.

Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2023-01-10 13:33:56 -08:00
Willy Tarreau
59ea187624 tools/nolibc: add auxiliary vector retrieval for arm
In the _start block we now iterate over envp to find the auxiliary
vector after the NULL. The pointer is saved into an _auxv variable
that is marked as weak so that it's accessible from multiple units.

Signed-off-by: Willy Tarreau <w@1wt.eu>

It was tested in arm, thumb1 and thumb2 modes.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2023-01-10 13:33:56 -08:00
Willy Tarreau
2a39a53245 tools/nolibc: add auxiliary vector retrieval for arm64
In the _start block we now iterate over envp to find the auxiliary
vector after the NULL. The pointer is saved into an _auxv variable
that is marked as weak so that it's accessible from multiple units.

Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2023-01-10 13:33:56 -08:00
Willy Tarreau
1cce162ab4 tools/nolibc: add auxiliary vector retrieval for x86_64
In the _start block we now iterate over envp to find the auxiliary
vector after the NULL. The pointer is saved into an _auxv variable
that is marked as weak so that it's accessible from multiple units.

Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2023-01-10 13:33:56 -08:00
Willy Tarreau
2ab4aa487b tools/nolibc: add auxiliary vector retrieval for i386
In the _start block we now iterate over envp to find the auxiliary
vector after the NULL. The pointer is saved into an _auxv variable
that is marked as weak so that it's accessible from multiple units.

Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2023-01-10 13:33:56 -08:00
Sven Schnelle
9e5bdc613d tools/nolibc: export environ as a weak symbol on s390
The environ is retrieved from the _start code and is easy to store at
this moment. Let's declare the variable weak and store the value into
it. By not being static it will be visible to all units. By being weak,
if some programs already declared it, they will continue to be able to
use it. This was tested on s390 both with environ inherited from
_start and extracted from envp.

Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2023-01-10 13:33:56 -08:00
Willy Tarreau
758f333795 tools/nolibc: export environ as a weak symbol on riscv
The environ is retrieved from the _start code and is easy to store at
this moment. Let's declare the variable weak and store the value into
it. By not being static it will be visible to all units. By being weak,
if some programs already declared it, they will continue to be able to
use it. This was tested on riscv64 both with environ inherited from
_start and extracted from envp.

Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2023-01-10 13:33:56 -08:00
Willy Tarreau
8f7fafebd1 tools/nolibc: export environ as a weak symbol on mips
The environ is retrieved from the _start code and is easy to store at
this moment. Let's declare the variable weak and store the value into
it. By not being static it will be visible to all units. By being weak,
if some programs already declared it, they will continue to be able to
use it. This was tested with mips24kc (BE) both with environ inherited
from _start and extracted from envp.

Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2023-01-10 13:33:56 -08:00
Willy Tarreau
a6f29a2c41 tools/nolibc: export environ as a weak symbol on arm
The environ is retrieved from the _start code and is easy to store at
this moment. Let's declare the variable weak and store the value into
it. By not being static it will be visible to all units. By being weak,
if some programs already declared it, they will continue to be able to
use it. This was tested in arm and thumb1 and thumb2 modes, and for each
mode, both with environ inherited from _start and extracted from envp.

Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2023-01-10 13:33:56 -08:00
Willy Tarreau
9b8688c6ea tools/nolibc: export environ as a weak symbol on arm64
The environ is retrieved from the _start code and is easy to store at
this moment. Let's declare the variable weak and store the value into
it. By not being static it will be visible to all units. By being weak,
if some programs already declared it, they will continue to be able to
use it. This was tested both with environ inherited from _start and
extracted from envp.

Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2023-01-10 13:33:56 -08:00
Willy Tarreau
52e423f5b9 tools/nolibc: export environ as a weak symbol on i386
The environ is retrieved from the _start code and is easy to store at
this moment. Let's declare the variable weak and store the value into
it. By not being static it will be visible to all units. By being weak,
if some programs already declared it, they will continue to be able to
use it. This was tested both with environ inherited from _start and
extracted from envp.

Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2023-01-10 13:33:55 -08:00
Willy Tarreau
89dc50921c tools/nolibc: export environ as a weak symbol on x86_64
The environ is retrieved from the _start code and is easy to store at
this moment. Let's declare the variable weak and store the value into
it. By not being static it will be visible to all units. By being weak,
if some programs already declared it, they will continue to be able to
use it. This was tested both with environ inherited from _start and
extracted from envp.

Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2023-01-10 13:33:55 -08:00
Willy Tarreau
1caa1154c3 tools/nolibc: make errno a weak symbol instead of a static one
Till now errno was declared static so that it could be eliminated if
unused. While the goal is commendable for tiny executables as it allows
to eliminate any data and bss segments when not used, this comes with
some limitations, one of which being that the errno symbol seen in
different units are not the same. Even though this has never been a
real issue given the nature of the programs involved till now, it
happens that referencing the same symbol from multiple units can also
be achieved using weak symbols, with a difference being that only one
of them will be used for all of them. Compared to weak symbols, static
basically have no benefit for regular programs since there are always
at least a few variables in most of these, so the bss segment cannot
be eliminated. E.g:

  $ size nolibc-test-static-errno
     text    data     bss     dec     hex filename
    11531       0      48   11579    2d3b nolibc-test-static-errno

Furthermore, the weak symbol doesn't use bss storage at all, resulting
in a slightly section:

  $ size nolibc-test-weak-errno
     text    data     bss     dec     hex filename
    11531       0      40   11571    2d33 nolibc-test-weak-errno

This patch thus converts errno from static to weak.

Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2023-01-10 13:33:55 -08:00
Willy Tarreau
d5b48f958b tools/nolibc: remove local definitions of O_* flags for open/fcntl
The historic nolibc code did not include asm/fcntl.h and had to define
the various O_RDWR etc macros in each arch-specific file (since such
values differ between certain archs). This was found at least once to
induce bugs due to wrong definitions. Let's get rid of all of them and
include asm/nolibc.h from sys.h instead. This was verified to work
properly on all supported architectures.

Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2023-01-10 13:33:55 -08:00
Willy Tarreau
5a51b6de59 tools/nolibc: support thumb mode with frame pointers on ARM
In Thumb mode, register r7 is normally used to store the frame pointer.
By default when optimizing at -Os there's no frame pointer so this works
fine. But if no optimization is set, then build errors occur, indicating
that r7 cannot not be used. It's difficult to cheat because it's the
compiler that is complaining, not the assembler, so it's not even possible
to report that the register was clobbered. The solution consists in saving
and restoring r7 around the syscall, but this slightly inflates the code.
The syscall number is passed via r6 which is never used by syscalls.

The current patch adds a few macroes which do that only in Thumb mode,
and which continue to directly assign the syscall number to register r7
in ARM mode. Now this always builds and works for all modes (tested on
Arm, Thumbv1, Thumbv2 modes, at -Os, -O0, -O0 -fomit-frame-pointer).
The code is very slightly inflated in thumb-mode without frame-pointers
compared to previously (e.g. 7928 vs 7864 bytes for nolibc-test) but at
least it's always operational. And it's possible to disable this mechanism
by setting NOLIBC_OMIT_FRAME_POINTER.

Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2023-01-10 13:33:55 -08:00
Willy Tarreau
20470dfd65 tools/nolibc: enable support for thumb1 mode for ARM
Passing -mthumb to the kernel.org arm toolchain failed to build because it
defaults to armv5 hence thumb1, which has a fairly limited instruction set
compared to thumb2 enabled with armv7 that is much more complete. It's not
very difficult to adjust the instructions to also build on thumb1, it only
adds a total of 3 instructions, so it's worth doing it at least to ease use
by casual testers. It was verified that the adjusted code now builds and
works fine for armv5, thumb1, armv7 and thumb2, as long as frame pointers
are not used.

Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2023-01-10 13:33:55 -08:00
Willy Tarreau
7f85485896 tools/nolibc: make compiler and assembler agree on the section around _start
The out-of-block asm() statement carrying _start does not allow the
compiler to know what section the assembly code is being emitted to,
and there's no easy way to push/pop the current section and restore
it. It sometimes causes issues depending on the include files ordering
and compiler optimizations. For example if a variable is declared
immediately before the asm() block and another one after, the compiler
assumes that the current section is still .bss and doesn't re-emit it,
making the second variable appear inside the .text section instead.
Forcing .bss at the end of the _start block doesn't work either because
at certain optimizations the compiler may reorder blocks and will make
some real code appear just after this block.

A significant number of solutions were attempted, but many of them were
still sensitive to section reordering. In the end, the best way to make
sure the compiler and assembler agree on the current section is to place
this code inside a function. Here the function is directly called _start
and configured not to emit a frame-pointer, hence to have no prologue.
If some future architectures would still emit some prologue, another
working approach consists in naming the function differently and placing
the _start label inside the asm statement. But the current solution is
simpler.

It was tested with nolibc-test at -O,-O0,-O2,-O3,-Os for arm,arm64,i386,
mips,riscv,s390 and x86_64.

Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2023-01-10 13:33:55 -08:00
Paulo Alcantara
39e8db3c86 cifs: fix double free on failed kerberos auth
If session setup failed with kerberos auth, we ended up freeing
cifs_ses::auth_key.response twice in SMB2_auth_kerberos() and
sesInfoFree().

Fix this by zeroing out cifs_ses::auth_key.response after freeing it
in SMB2_auth_kerberos().

Fixes: a4e430c8c8 ("cifs: replace kfree() with kfree_sensitive() for sensitive data")
Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Acked-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2023-01-10 15:32:03 -06:00
Colin Ian King
2f57e4464c cifs: remove redundant assignment to the variable match
The variable match is being assigned a value that is never read, it
is being re-assigned a new value later on. The assignment is redundant
and can be removed.

Cleans up clang scan-build warning:
fs/cifs/dfs_cache.c:1302:2: warning: Value stored to 'match' is never read

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
2023-01-10 15:31:08 -06:00
Linus Torvalds
7dd4b804e0 nfsd-6.2 fixes:
- Fix a race when creating NFSv4 files
 - Revert the use of relaxed bitops
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Merge tag 'nfsd-6.2-3' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux

Pull nfsd fixes from Chuck Lever:

 - Fix a race when creating NFSv4 files

 - Revert the use of relaxed bitops

* tag 'nfsd-6.2-3' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
  NFSD: Use set_bit(RQ_DROPME)
  Revert "SUNRPC: Use RMW bitops in single-threaded hot paths"
  nfsd: fix handling of cached open files in nfsd4_open codepath
2023-01-10 15:03:06 -06:00
Linus Torvalds
092f623910 Xtensa fixes for v6.2:
- fix xtensa allmodconfig build broken by the kcsan test
 - drop unused members of struct thread_struct
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Merge tag 'xtensa-20230110' of https://github.com/jcmvbkbc/linux-xtensa

Pull xtensa fixes from Max Filippov:

 - fix xtensa allmodconfig build broken by the kcsan test

 - drop unused members of struct thread_struct

* tag 'xtensa-20230110' of https://github.com/jcmvbkbc/linux-xtensa:
  xtensa: drop unused members of struct thread_struct
  kcsan: test: don't put the expect array on the stack
2023-01-10 14:48:12 -06:00
Prashant Malani
441529bed4 platform/chrome: cros_typec_switch: Check for retimer flag
Not all ports have retimers. Only register a retimer switch if the
"retimer-switch" property is present for that port's mux
device.

Signed-off-by: Prashant Malani <pmalani@chromium.org>
Reviewed-by: Benson Leung <bleung@chromium.org>
Link: https://lore.kernel.org/r/20230104060846.112216-2-pmalani@chromium.org
2023-01-10 20:47:32 +00:00
Prashant Malani
ef9c00dbd3 platform/chrome: cros_typec_switch: Use fwnode* prop check
Using device_property_present() multiple times on an ACPI device
leads to kernel panics on Chromebook systems. This happens when there
is > 1 boolean property in an ACPI device which is created dynamically
by the BIOS as part of SSDT[1] on Chromebook systems

Since fwnode_* can handle simple device tree properties equally
well, switch to using the fwnode_property_present() function
version. This will avoid panics and make the usage consistent
when we introduce a check for the 2nd property in a subsequent patch.

[1] https://wiki.osdev.org/SSDT

Signed-off-by: Prashant Malani <pmalani@chromium.org>
Reviewed-by: Benson Leung <bleung@chromium.org>
Link: https://lore.kernel.org/r/20230104060846.112216-1-pmalani@chromium.org
2023-01-10 20:47:32 +00:00
Kajetan Puchalski
9ce0f7c4bc cpuidle: teo: Introduce util-awareness
Modern interactive systems, such as recent Android phones, tend to have
power efficient shallow idle states. Selecting deeper idle states on a
device while a latency-sensitive workload is running can adversely
impact performance due to increased latency. Additionally, if the CPU
wakes up from a deeper sleep before its target residency as is often the
case, it results in a waste of energy on top of that.

At the moment, none of the available idle governors take any scheduling
information into account. They also tend to overestimate the idle
duration quite often, which causes them to select excessively deep idle
states, thus leading to increased wakeup latency and lower performance
with no power saving. For 'menu' while web browsing on Android for
instance, those types of wakeups ('too deep') account for over 24% of
all wakeups.

At the same time, on some platforms idle state 0 can be power efficient
enough to warrant wanting to prefer it over idle state 1. This is
because the power usage of the two states can be so close that
sufficient amounts of too deep state 1 sleeps can completely offset the
state 1 power saving to the point where it would've been more power
efficient to just use state 0 instead. This is, of course, for systems
where state 0 is not a polling state, such as arm-based devices.

Sleeps that happened in state 0 while they could have used state 1 ('too
shallow') only save less power than they otherwise could have. Too deep
sleeps, on the other hand, harm performance and nullify the potential
power saving from using state 1 in the first place. While taking this
into account, it is clear that on balance it is preferable for an idle
governor to have more too shallow sleeps instead of more too deep sleeps
on those kinds of platforms.

This patch specifically tunes TEO to prefer shallower idle states in
order to reduce wakeup latency and achieve better performance.

To this end, before selecting the next idle state it uses the avg_util
signal of a CPU's runqueue in order to determine to what extent the CPU
is being utilized. This util value is then compared to a threshold
defined as a percentage of the CPU's capacity (capacity >> 6 ie. ~1.5%
in the current implementation). If the util is above the threshold, the
index of the idle state selected by TEO metrics will be reduced by 1,
thus selecting a shallower state. If the util is below the threshold,
the governor defaults to the TEO metrics mechanism to try to select the
deepest available idle state based on the closest timer event and its
own correctness.

The main goal of this is to reduce latency and increase performance for
some workloads. Under some workloads it will result in an increase in
power usage (Geekbench 5) while for other workloads it will also result
in a decrease in power usage compared to TEO (PCMark Web, Jankbench,
Speedometer).

It can provide drastically decreased latency and performance benefits in
certain types of workloads that are sensitive to latency.

Example test results:

1. GB5 (better score, latency & more power usage)

| metric                                | menu           | teo               | teo-util-aware    |
| ------------------------------------- | -------------- | ----------------- | ----------------- |
| gmean score                           | 2826.5 (0.0%)  | 2764.8 (-2.18%)   | 2865 (1.36%)      |
| gmean power usage [mW]                | 2551.4 (0.0%)  | 2606.8 (2.17%)    | 2722.3 (6.7%)     |
| gmean too deep %                      | 14.99%         | 9.65%             | 4.02%             |
| gmean too shallow %                   | 2.5%           | 5.96%             | 14.59%            |
| gmean task wakeup latency (asynctask) | 78.16μs (0.0%) | 61.60μs (-21.19%) | 54.45μs (-30.34%) |

2. Jankbench (better score, latency & less power usage)

| metric                                | menu           | teo               | teo-util-aware    |
| ------------------------------------- | -------------- | ----------------- | ----------------- |
| gmean frame duration                  | 13.9 (0.0%)    | 14.7 (6.0%)       | 12.6 (-9.0%)      |
| gmean jank percentage                 | 1.5 (0.0%)     | 2.1 (36.99%)      | 1.3 (-17.37%)     |
| gmean power usage [mW]                | 144.6 (0.0%)   | 136.9 (-5.27%)    | 121.3 (-16.08%)   |
| gmean too deep %                      | 26.00%         | 11.00%            | 2.54%             |
| gmean too shallow %                   | 4.74%          | 11.89%            | 21.93%            |
| gmean wakeup latency (RenderThread)   | 139.5μs (0.0%) | 116.5μs (-16.49%) | 91.11μs (-34.7%)  |
| gmean wakeup latency (surfaceflinger) | 124.0μs (0.0%) | 151.9μs (22.47%)  | 87.65μs (-29.33%) |

Signed-off-by: Kajetan Puchalski <kajetan.puchalski@arm.com>
[ rjw: Comment edits and white space adjustments ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2023-01-10 20:53:22 +01:00
Kajetan Puchalski
27f8508801 cpuidle: teo: Optionally skip polling states in teo_find_shallower_state()
Add a no_poll flag to teo_find_shallower_state() that will let the
function optionally not consider polling states.

This allows the caller to guard against the function inadvertently
resulting in TEO putting the CPU in a polling state when that
behaviour is undesirable.

Signed-off-by: Kajetan Puchalski <kajetan.puchalski@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2023-01-10 20:53:22 +01:00
Daniil Tatianin
6650c8e906 iavf/iavf_main: actually log ->src mask when talking about it
This fixes a copy-paste issue where dev_err would log the dst mask even
though it is clearly talking about src.

Found by Linux Verification Center (linuxtesting.org) with the SVACE
static analysis tool.

Fixes: 0075fa0fad ("i40evf: Add support to apply cloud filters")
Signed-off-by: Daniil Tatianin <d-tatianin@yandex-team.ru>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2023-01-10 11:52:38 -08:00
Christopher S Hall
5e91c72e56 igc: Fix PPS delta between two synchronized end-points
This patch fix the pulse per second output delta between
two synchronized end-points.

Based on Intel Discrete I225 Software User Manual Section
4.2.15 TimeSync Auxiliary Control Register, ST0[Bit 4] and
ST1[Bit 7] must be set to ensure that clock output will be
toggles based on frequency value defined. This is to ensure
that output of the PPS is aligned with the clock.

How to test:

1) Running time synchronization on both end points.
Ex: ptp4l --step_threshold=1 -m -f gPTP.cfg -i <interface name>

2) Configure PPS output using below command for both end-points
Ex: SDP0 on I225 REV4 SKU variant

./testptp -d /dev/ptp0 -L 0,2
./testptp -d /dev/ptp0 -p 1000000000

3) Measure the output using analyzer for both end-points

Fixes: 87938851b6 ("igc: enable auxiliary PHC functions for the i225")
Signed-off-by: Christopher S Hall <christopher.s.hall@intel.com>
Signed-off-by: Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@intel.com>
Acked-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Naama Meir <naamax.meir@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2023-01-10 11:43:36 -08:00
Yang Yingliang
b93fb4405f ixgbe: fix pci device refcount leak
As the comment of pci_get_domain_bus_and_slot() says, it
returns a PCI device with refcount incremented, when finish
using it, the caller must decrement the reference count by
calling pci_dev_put().

In ixgbe_get_first_secondary_devfn() and ixgbe_x550em_a_has_mii(),
pci_dev_put() is called to avoid leak.

Fixes: 8fa10ef012 ("ixgbe: register a mdiobus")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2023-01-10 11:38:58 -08:00
Krzysztof Kozlowski
5d1ab51463 ARM: dts: exynos: drop unused pinctrl-names from Galaxy Tab
pinctrl-names without pinctrl-0 are simply unused:

  exynos5420-klimt-wifi.dtb: gpio-keys: 'pinctrl-0' is a dependency of 'pinctrl-names'

Link: https://lore.kernel.org/r/20221204190543.143986-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
2023-01-10 20:35:26 +01:00
Krzysztof Kozlowski
91d8930657 arm64: dts: exynos: drop unsupported I2C properties in Espresso
The Samsung HSI2C (High Speed I2C) bindings do not allow
samsung,i2c-sda-delay (present in older S3C24xx I2C bindings):

  exynos7-espresso.dtb: i2c@13660000: Unevaluated properties are not allowed ('samsung,i2c-sda-delay', 'samsung,i2c-max-bus-freq' were unexpected)

Link: https://lore.kernel.org/r/20221204190543.143986-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
2023-01-10 20:35:17 +01:00
Krzysztof Kozlowski
c14f161c1f dt-bindings: soc: samsung: exynos-sysreg: correct indentation for deprecated
"deprecated" keyword was indentend wrong - entire list of compatibles
starting with generic Exynos SoC compatible is deprecated.

Reported-by: Rob Herring <robh@kernel.org>
Fixes: 0a2af7bdee ("dt-bindings: soc: samsung: exynos-sysreg: add dedicated SYSREG compatibles to Exynos850")
Link: https://lore.kernel.org/r/20230109083948.77462-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
2023-01-10 20:34:08 +01:00
Yang Li
e7fcfe67f9 thermal: intel: Fix unsigned comparison with less than zero
The return value from the call to intel_tcc_get_tjmax() is int, which can
be a negative error code. However, the return value is being assigned to
an u32 variable 'tj_max', so making 'tj_max' an int.

Eliminate the following warning:
./drivers/thermal/intel/intel_soc_dts_iosf.c:394:5-11: WARNING: Unsigned expression compared with zero: tj_max < 0

Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=3637
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2023-01-10 20:33:26 +01:00
YiPeng Chai
40794dfd20 drm/amdgpu: Fixed bug on error when unloading amdgpu
Fixed bug on error when unloading amdgpu.

The error message is as follows:
[  377.706202] kernel BUG at drivers/gpu/drm/drm_buddy.c:278!
[  377.706215] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
[  377.706222] CPU: 4 PID: 8610 Comm: modprobe Tainted: G          IOE      6.0.0-thomas #1
[  377.706231] Hardware name: ASUS System Product Name/PRIME Z390-A, BIOS 2004 11/02/2021
[  377.706238] RIP: 0010:drm_buddy_free_block+0x26/0x30 [drm_buddy]
[  377.706264] Code: 00 00 00 90 0f 1f 44 00 00 48 8b 0e 89 c8 25 00 0c 00 00 3d 00 04 00 00 75 10 48 8b 47 18 48 d3 e0 48 01 47 28 e9 fa fe ff ff <0f> 0b 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 41 54 55 48 89 f5 53
[  377.706282] RSP: 0018:ffffad2dc4683cb8 EFLAGS: 00010287
[  377.706289] RAX: 0000000000000000 RBX: ffff8b1743bd5138 RCX: 0000000000000000
[  377.706297] RDX: ffff8b1743bd5160 RSI: ffff8b1743bd5c78 RDI: ffff8b16d1b25f70
[  377.706304] RBP: ffff8b1743bd59e0 R08: 0000000000000001 R09: 0000000000000001
[  377.706311] R10: ffff8b16c8572400 R11: ffffad2dc4683cf0 R12: ffff8b16d1b25f70
[  377.706318] R13: ffff8b16d1b25fd0 R14: ffff8b1743bd59c0 R15: ffff8b16d1b25f70
[  377.706325] FS:  00007fec56c72c40(0000) GS:ffff8b1836500000(0000) knlGS:0000000000000000
[  377.706334] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  377.706340] CR2: 00007f9b88c1ba50 CR3: 0000000110450004 CR4: 00000000003706e0
[  377.706347] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  377.706354] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  377.706361] Call Trace:
[  377.706365]  <TASK>
[  377.706369]  drm_buddy_free_list+0x2a/0x60 [drm_buddy]
[  377.706376]  amdgpu_vram_mgr_fini+0xea/0x180 [amdgpu]
[  377.706572]  amdgpu_ttm_fini+0x12e/0x1a0 [amdgpu]
[  377.706650]  amdgpu_bo_fini+0x22/0x90 [amdgpu]
[  377.706727]  gmc_v11_0_sw_fini+0x26/0x30 [amdgpu]
[  377.706821]  amdgpu_device_fini_sw+0xa1/0x3c0 [amdgpu]
[  377.706897]  amdgpu_driver_release_kms+0x12/0x30 [amdgpu]
[  377.706975]  drm_dev_release+0x20/0x40 [drm]
[  377.707006]  release_nodes+0x35/0xb0
[  377.707014]  devres_release_all+0x8b/0xc0
[  377.707020]  device_unbind_cleanup+0xe/0x70
[  377.707027]  device_release_driver_internal+0xee/0x160
[  377.707033]  driver_detach+0x44/0x90
[  377.707039]  bus_remove_driver+0x55/0xe0
[  377.707045]  pci_unregister_driver+0x3b/0x90
[  377.707052]  amdgpu_exit+0x11/0x6c [amdgpu]
[  377.707194]  __x64_sys_delete_module+0x142/0x2b0
[  377.707201]  ? fpregs_assert_state_consistent+0x22/0x50
[  377.707208]  ? exit_to_user_mode_prepare+0x3e/0x190
[  377.707215]  do_syscall_64+0x38/0x90
[  377.707221]  entry_SYSCALL_64_after_hwframe+0x63/0xcd

Signed-off-by: YiPeng Chai <YiPeng.Chai@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-01-10 14:32:58 -05:00
Mario Limonciello
030001288f drm/amd: make amdgpu_ucode_validate static
No consumers outside of amdgpu_ucode.c use amdgpu_ucode_validate
anymore, so make the function static.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-01-10 14:32:58 -05:00
Mario Limonciello
79da290ef6 drm/amd: Use amdgpu_ucode_release helper for si
The `amdgpu_ucode_release` helper is replacing all calls
to release_firmware.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-01-10 14:32:58 -05:00
Mario Limonciello
778af6661c drm/amd: Use amdgpu_ucode_release helper for powerplay
The `amdgpu_ucode_release` helper is replacing all calls to
release_firmware.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-01-10 14:32:58 -05:00
Mario Limonciello
46fa9075dc drm/amd: Use amdgpu_ucode_* helpers for DMCU
The `amdgpu_ucode_request` helper will ensure that the return code for
missing firmware is -ENODEV so that early_init can fail.

The `amdgpu_ucode_release` helper is for symmetry on unloading.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-01-10 14:32:58 -05:00
Mario Limonciello
b31d306378 drm/amd: Use amdgpu_ucode_* helpers for GPU info bin
The `amdgpu_ucode_request` helper will ensure that the return code for
missing firmware is -ENODEV so that early_init can fail.

The `amdgpu_ucode_release` helper is for symmetry on unloading.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-01-10 14:32:58 -05:00
Mario Limonciello
e5a7d047f4 drm/amd: Use amdgpu_ucode_* helpers for CGS
The `amdgpu_ucode_request` helper will ensure that the return code for
missing firmware is -ENODEV so that early_init can fail.

The `amdgpu_ucode_release` helper is for symmetry on unloading.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-01-10 14:32:58 -05:00
Mario Limonciello
52215e2a5d drm/amd: Use amdgpu_ucode_* helpers for VCE
The `amdgpu_ucode_request` helper will ensure that the return code for
missing firmware is -ENODEV so that early_init can fail.

The `amdgpu_ucode_release` helper is for symmetry on unloading.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-01-10 14:32:58 -05:00
Mario Limonciello
b406477c61 drm/amd: Use amdgpu_ucode_* helpers for UVD
The `amdgpu_ucode_request` helper will ensure that the return code for
missing firmware is -ENODEV so that early_init can fail.

The `amdgpu_ucode_release` helper is for symmetry on unloading.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-01-10 14:32:58 -05:00
Mario Limonciello
cb9bdfad22 drm/amd: Use amdgpu_ucode_* helpers for SDMA on CIK
The `amdgpu_ucode_request` helper will ensure that the return code for
missing firmware is -ENODEV so that early_init can fail.

The `amdgpu_ucode_release` helper is for symmetry on unloading.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-01-10 14:32:58 -05:00