Siemens SCALANCE and RUGGEDCOM Devices Improper Input Validation (CVE-2024-47663)

staging: iio: frequency: ad9834: In ad9834writefrequency clkgetrate can return 0. In such case ad9834calcfreqreg call will lead to division by zero. Checking 'if fout clkfreq / 2' doesn't protect in case of 'fout' is 0. ad9834writefrequency is called from ad9834write, where fout is taken from tex...