Christos Margiolis
dbf51f8ed0
378e0c5c89reduced the number of playback channels from 5 to 1. This introduced a regression, because the global DMA buffer indexing was not adapted accordingly, which now results in kernel panics because of out-of-bounds reads into the buffer. Additionally, because of wrong indexing, recording channels ended up being serviced by the playback part of envy24ht_intr(). Register 1 recording channel instead of 2 + sc->adcn, as the recording DMA buffer only has room for 1 stereo stream. With 1 channel per direction, give each channel the first index of its direction (ENVY24HT_CHAN_PLAY_DAC1 and ENVY24HT_CHAN_REC_ADC1). While here, fix the buffer wrap in envy24ht_r16sl(). It has to be ch->size / ch->unit, but was copied verbatim from the 32-bit equivalent, whose samples are twice as large, so 16-bit recording wrapped halfway through the DMA buffer and never read the second half. Fixes:378e0c5c89PR: 299952 MFC after: 1 week Sponsored by: The FreeBSD Foundation Reviewed by: markj Differential Revision: https://reviews.freebsd.org/D61155
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