From 483cee77d2be6c22ef67ac8c6711e757d138a538 Mon Sep 17 00:00:00 2001 From: Adrian Knoth Date: Wed, 23 Feb 2011 11:43:09 +0100 Subject: [PATCH] ALSA: hdspm - Fix buffer handling on RME MADI/MADIface/AES(32) Only RayDAT and AIO provide sane buffer pointers that can be used with HDSPM_BufferPositionMask, on all other cards, this would result in a wrong HW pointer leading to xruns and these messages: [260808.916788] BUG: pcmC0D0p:0, pos = 2976, buffer size = 1024, period size = 512 [260808.961124] BUG: pcmC0D0c:0, pos = 4944, buffer size = 1024, period size = 512 Signed-off-by: Adrian Knoth Signed-off-by: Takashi Iwai --- sound/pci/rme9652/hdspm.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/sound/pci/rme9652/hdspm.c b/sound/pci/rme9652/hdspm.c index 92588975f580..509a35a881f5 100644 --- a/sound/pci/rme9652/hdspm.c +++ b/sound/pci/rme9652/hdspm.c @@ -1231,8 +1231,17 @@ static snd_pcm_uframes_t hdspm_hw_pointer(struct hdspm *hdspm) int position; position = hdspm_read(hdspm, HDSPM_statusRegister); - position &= HDSPM_BufferPositionMask; - position /= 4; /* Bytes per sample */ + + switch (hdspm->io_type) { + case RayDAT: + case AIO: + position &= HDSPM_BufferPositionMask; + position /= 4; /* Bytes per sample */ + break; + default: + position = (position & HDSPM_BufferID) ? + (hdspm->period_bytes / 4) : 0; + } return position; } -- 2.30.2