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| author | Nikita Zhandarovich <[email protected]> | 2023-05-10 07:35:37 -0700 |
|---|---|---|
| committer | Guenter Roeck <[email protected]> | 2023-05-19 05:59:37 -0700 |
| commit | 0babf89c9cca7e074d6e59893e462e4886f481cc (patch) | |
| tree | ddeb47377a07238929c6bc7144ffe4a780312ad1 /drivers/cdx/controller/mcdi_functions.c | |
| parent | f1fcbaa18b28dec10281551dfe6ed3a3ed80e3d6 (diff) | |
hwmon: (f71882fg) prevent possible division by zero
In the unlikely event that something goes wrong with the device and
its registers, the fan_from_reg() function may return 0. This value
will cause a division-by-zero error in the show_pwm() function.
To prevent this, test the value of
fan_from_reg(data->fan_full_speed[nr]) against 0 before performing
the division. If the division-by-zero error is avoided, assign 0 to
the val variable.
Found by Linux Verification Center (linuxtesting.org) with static
analysis tool SVACE.
Fixes: df9ec2dae094 ("hwmon: (f71882fg) Reorder symbols to get rid of a few forward declarations")
Signed-off-by: Nikita Zhandarovich <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Guenter Roeck <[email protected]>
Diffstat (limited to 'drivers/cdx/controller/mcdi_functions.c')
0 files changed, 0 insertions, 0 deletions