https://github.com/torvalds/linux
Revision 38463721ec3c39acdabed3a89016ce6bb32a7543 authored by Adamski, Krzysztof (Nokia - PL/Wroclaw) on 29 May 2019, 14:33:52 UTC, committed by Guenter Roeck on 06 June 2019, 01:36:27 UTC
update_lock is a mutex intended to protect write operations. It was not
taken, however, when _pmbus_write_word_data is called from
pmbus_set_samples() function which may cause problems especially when
some PMBUS_VIRT_* operation is implemented as a read-modify-write cycle.
This patch makes sure the lock is held during the operation.
Fixes: 49c4455dccf2 ("hwmon: (pmbus) Introduce PMBUS_VIRT_*_SAMPLES registers")
Signed-off-by: Krzysztof Adamski <krzysztof.adamski@nokia.com>
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
[groeck: Declared and initialized missing 'data' variable]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Tip revision: 38463721ec3c39acdabed3a89016ce6bb32a7543 authored by Adamski, Krzysztof (Nokia - PL/Wroclaw) on 29 May 2019, 14:33:52 UTC
hwmon: (pmbus/core) mutex_lock write in pmbus_set_samples
hwmon: (pmbus/core) mutex_lock write in pmbus_set_samples
Tip revision: 3846372
| File | Mode | Size |
|---|---|---|
| Documentation | ||
| LICENSES | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | -rw-r--r-- | 14.6 KB |
| .cocciconfig | -rw-r--r-- | 59 bytes |
| .get_maintainer.ignore | -rw-r--r-- | 71 bytes |
| .gitattributes | -rw-r--r-- | 30 bytes |
| .gitignore | -rw-r--r-- | 1.6 KB |
| .mailmap | -rw-r--r-- | 11.9 KB |
| COPYING | -rw-r--r-- | 423 bytes |
| CREDITS | -rw-r--r-- | 97.2 KB |
| Kbuild | -rw-r--r-- | 1.5 KB |
| Kconfig | -rw-r--r-- | 563 bytes |
| MAINTAINERS | -rw-r--r-- | 499.9 KB |
| Makefile | -rw-r--r-- | 58.8 KB |
| README | -rw-r--r-- | 727 bytes |
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