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 |
|---|---|---|
| accounting | ||
| arch | ||
| bpf | ||
| build | ||
| cgroup | ||
| crypto | ||
| debugging | ||
| firewire | ||
| firmware | ||
| gpio | ||
| hv | ||
| iio | ||
| include | ||
| io_uring | ||
| kvm | ||
| laptop | ||
| leds | ||
| lib | ||
| memory-model | ||
| nfsd | ||
| objtool | ||
| pci | ||
| pcmcia | ||
| perf | ||
| power | ||
| scripts | ||
| spi | ||
| testing | ||
| thermal | ||
| time | ||
| usb | ||
| virtio | ||
| vm | ||
| wmi | ||
| Makefile | -rw-r--r-- | 5.7 KB |
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