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linux/drivers/staging/iio
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Aleksandr Mishin b48aa99175 staging: iio: frequency: ad9834: Validate frequency parameter value 
In ad9834_write_frequency() clk_get_rate() can return 0. In such case
ad9834_calc_freqreg() call will lead to division by zero. Checking
'if (fout > (clk_freq / 2))' doesn't protect in case of 'fout' is 0.
ad9834_write_frequency() is called from ad9834_write(), where fout is
taken from text buffer, which can contain any value.

Modify parameters checking.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: 12b9d5bf76 ("Staging: IIO: DDS: AD9833 / AD9834 driver")
Suggested-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Aleksandr Mishin <amishin@t-argos.ru>
Reviewed-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://patch.msgid.link/20240703154506.25584-1-amishin@t-argos.ru
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-07-29 20:31:23 +01:00
..
accel staging: iio: accel: adis16240: Call '__adis_initial_startup()' 2022-11-23 20:37:51 +00:00
adc iio:adc:ad7280a: Move out of staging 2022-02-21 19:33:05 +00:00
addac staging: iio: Drop explicit initialization of struct i2c_device_id::driver_data to 0 2024-06-13 19:19:23 +01:00
Documentation iio: resolver: ad2s1210: move out of staging 2023-10-12 09:20:50 +01:00
frequency staging: iio: frequency: ad9834: Validate frequency parameter value 2024-07-29 20:31:23 +01:00
impedance-analyzer staging: iio: Drop explicit initialization of struct i2c_device_id::driver_data to 0 2024-06-13 19:19:23 +01:00
Kconfig iio: resolver: ad2s1210: move out of staging 2023-10-12 09:20:50 +01:00
Makefile iio: resolver: ad2s1210: move out of staging 2023-10-12 09:20:50 +01:00
TODO staging: iio: remove mention of defunct list 2021-03-25 19:13:49 +00:00