How often do the message appear in system log? (BUG 16.04 or XRUN before
14.04)
it mean the value return is larger than buffer size or the interrupt is
not handled properly
static inline int vortex_adbdma_getlinearpos(vortex_t * vortex, int
adbdma) { stream_t *dma = &vortex->dma_adb[adbdma]; int temp, page,
delta; temp = hwread(vortex->mmio, VORTEX_ADBDMA_STAT + (adbdma << 2));
page = (temp & ADB_SUBBUF_MASK) >> ADB_SUBBUF_SHIFT; if (dma->nr_periods
>= 4) delta = (page - dma->period_real) & 3; else { delta = (page -
dma->period_real); if (delta < 0) delta += dma->nr_periods; } return
(dma->period_virt + delta) * dma->period_bytes + (temp &
(dma->period_bytes - 1)); }
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https://bugs.launchpad.net/bugs/1551041
Title:
snd_au8820 0000:01:04.0: BUG: , pos = 16386, buffer size = 16384,
period size = 1024
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