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/linux-4.19.296/drivers/isdn/mISDN/
Ddsp_dtmf.c127 int lowgroup, highgroup; in dsp_dtmf_goertzel_decode() local
246 lowgroup = -1; in dsp_dtmf_goertzel_decode()
254 lowgroup = -1; in dsp_dtmf_goertzel_decode()
261 if (lowgroup >= 0) { in dsp_dtmf_goertzel_decode()
263 lowgroup = -1; in dsp_dtmf_goertzel_decode()
266 lowgroup = i; 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()