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/linux-4.19.296/drivers/isdn/mISDN/
Ddsp_dtmf.c127 int lowgroup, highgroup; in dsp_dtmf_goertzel_decode() local
247 highgroup = -1; in dsp_dtmf_goertzel_decode()
255 highgroup = -1; in dsp_dtmf_goertzel_decode()
269 if (highgroup >= 0) { in dsp_dtmf_goertzel_decode()
271 highgroup = -1; in dsp_dtmf_goertzel_decode()
274 highgroup = i - (NCOEFF / 2); in dsp_dtmf_goertzel_decode()
280 if (lowgroup >= 0 && highgroup >= 0) in dsp_dtmf_goertzel_decode()
281 what = dtmf_matrix[lowgroup][highgroup]; in dsp_dtmf_goertzel_decode()