d8b09a5edc
commit b48aa991758999d4e8f9296c5bbe388f293ef465 upstream.
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:
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|---|---|---|
| .. | ||
| android | ||
| axis-fifo | ||
| board | ||
| clocking-wizard | ||
| emxx_udc | ||
| fbtft | ||
| fieldbus | ||
| fwserial | ||
| gdm724x | ||
| greybus | ||
| gs_fpgaboot | ||
| iio | ||
| ks7010 | ||
| media | ||
| most | ||
| mt7621-dma | ||
| mt7621-dts | ||
| mt7621-pci | ||
| netlogic | ||
| nvec | ||
| octeon | ||
| octeon-usb | ||
| olpc_dcon | ||
| pi433 | ||
| qlge | ||
| r8188eu | ||
| ralink-gdma | ||
| rtl8192e | ||
| rtl8192u | ||
| rtl8712 | ||
| rtl8723bs | ||
| rts5208 | ||
| sm750fb | ||
| unisys | ||
| vc04_services | ||
| vme | ||
| vt6655 | ||
| vt6656 | ||
| wfx | ||
| wlan-ng | ||
| Kconfig | ||
| Makefile | ||