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hwmon: (adm9240) fix data race in adm9240_fan_read
authorLi Zhong <floridsleeves@gmail.com>
Sat, 24 Sep 2022 00:17:51 +0000 (17:17 -0700)
committerGuenter Roeck <linux@roeck-us.net>
Sun, 25 Sep 2022 21:22:11 +0000 (14:22 -0700)
commit8887516f01066375d70162a978b3fd9d73695878
tree03d4397d8274b4a65e778f7ac0e52b4ccf83e7f1tree | snapshot
parentf9c0cf8f26de367c58e48b02b1cdb9c377626e6fcommit | diff
hwmon: (adm9240) fix data race in adm9240_fan_read

In
adm9240_read()
  adm9240_fan_read()
    adm9240_write_fan_div(),

it assumes that the caller of adm9240_write_fan_div() must hold
data->update_lock. Otherwise, it may cause data races when data is
updated by other threads.

Signed-off-by: Li Zhong <floridsleeves@gmail.com>
Link: https://lore.kernel.org/r/20220924001751.1726369-1-floridsleeves@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
drivers/hwmon/adm9240.c diff | blob | history
Domain: System / Kernel;