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Stefan Wahren a27aeae714 w1: w1_therm: fix locking behavior in convert_t 
[ Upstream commit dca5480ab7b77a889088ab7cac81934604510ac7 ]

The commit 67b392f7b8 ("w1_therm: optimizing temperature read timings")
accidentially inverted the logic for lock handling of the bus mutex.

Before:
  pullup -> release lock before sleep
  no pullup -> release lock after sleep

After:
  pullup -> release lock after sleep
  no pullup -> release lock before sleep

This cause spurious measurements of 85 degree (powerup value) on the
Tarragon board with connected 1-w temperature sensor
(w1_therm.w1_strong_pull=0).

In the meantime a new feature for polling the conversion
completion has been integrated in these branches with
commit 021da53e65 ("w1: w1_therm: Add sysfs entries to control
conversion time and driver features"). But this feature isn't
available for parasite power mode, so handle this separately.

Link: https://lore.kernel.org/regressions/2023042645-attentive-amends-7b0b@gregkh/T/
Fixes: 67b392f7b8 ("w1_therm: optimizing temperature read timings")
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Link: https://lore.kernel.org/r/20230427112152.12313-1-stefan.wahren@i2se.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-07-27 08:44:02 +02:00
arch ARC: define ASM_NL and __ALIGN(_STR) outside #ifdef __ASSEMBLY__ guard 2023-07-27 08:44:00 +02:00
block block: fix signed int overflow in Amiga partition support 2023-07-27 08:44:01 +02:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:13:17 +02:00
crypto KEYS: asymmetric: Copy sig and digest in public_key_verify_signature() 2023-06-09 10:30:17 +02:00
Documentation mm/pagealloc: sysctl: change watermark_scale_factor max limit to 30% 2023-06-28 10:28:09 +02:00
drivers w1: w1_therm: fix locking behavior in convert_t 2023-07-27 08:44:02 +02:00
fs NFSv4.1: freeze the session table upon receiving NFS4ERR_BADSESSION 2023-07-27 08:44:00 +02:00
include block: change all __u32 annotations to __be32 in affs_hardblocks.h 2023-07-27 08:44:02 +02:00
init kbuild: check the minimum assembler version in Kconfig 2023-04-20 12:10:28 +02:00
io_uring io_uring: ensure IOPOLL locks around deferred work 2023-07-27 08:44:01 +02:00
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2022-12-08 11:24:00 +01:00
kernel kcsan: Don't expect 64 bits atomic builtins from 32 bits architectures 2023-07-27 08:43:57 +02:00
lib lib/ts_bm: reset initial match offset for every block of text 2023-07-27 08:43:43 +02:00
LICENSES LICENSES/deprecated: add Zlib license text 2020-09-16 14:33:49 +02:00
mm memfd: check for non-NULL file_seals in memfd_create() syscall 2023-06-28 10:28:09 +02:00
net SUNRPC: Fix UAF in svc_tcp_listen_data_ready() 2023-07-27 08:44:02 +02:00
samples samples/bpf: Fix buffer overflow in tcp_basertt 2023-07-27 08:43:36 +02:00
scripts modpost: fix off by one in is_executable_section() 2023-07-27 08:44:00 +02:00
security ima: Fix build warnings 2023-07-27 08:43:35 +02:00
sound ASoC: imx-audmix: check return value of devm_kasprintf() 2023-07-27 08:43:55 +02:00
tools perf dwarf-aux: Fix off-by-one in die_get_varname() 2023-07-27 08:43:57 +02:00
usr usr/include/Makefile: add linux/nfc.h to the compile-test coverage 2022-02-01 17:25:48 +01:00
virt KVM: fix memoryleak in kvm_init() 2023-04-05 11:23:43 +02:00
.clang-format RDMA 5.10 pull request 2020-10-17 11:18:18 -07:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore kbuild: generate Module.symvers only when vmlinux exists 2021-05-19 10:12:59 +02:00
.mailmap mailmap: add two more addresses of Uwe Kleine-König 2020-12-06 10:19:07 -08:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Move Jason Cooper to CREDITS 2020-11-30 10:20:34 +01:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Remove DECnet support from kernel 2023-06-21 15:45:38 +02:00
Makefile Linux 5.10.187 2023-07-24 19:09:12 +02:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.