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-rw-r--r--sound/pci/cmipci.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/sound/pci/cmipci.c b/sound/pci/cmipci.c
index 1ded64e05643..329968edca9b 100644
--- a/sound/pci/cmipci.c
+++ b/sound/pci/cmipci.c
@@ -941,13 +941,21 @@ static snd_pcm_uframes_t snd_cmipci_pcm_pointer(struct cmipci *cm, struct cmipci
941 struct snd_pcm_substream *substream) 941 struct snd_pcm_substream *substream)
942{ 942{
943 size_t ptr; 943 size_t ptr;
944 unsigned int reg; 944 unsigned int reg, rem, tries;
945
945 if (!rec->running) 946 if (!rec->running)
946 return 0; 947 return 0;
947#if 1 // this seems better.. 948#if 1 // this seems better..
948 reg = rec->ch ? CM_REG_CH1_FRAME2 : CM_REG_CH0_FRAME2; 949 reg = rec->ch ? CM_REG_CH1_FRAME2 : CM_REG_CH0_FRAME2;
949 ptr = rec->dma_size - (snd_cmipci_read_w(cm, reg) + 1); 950 for (tries = 0; tries < 3; tries++) {
950 ptr >>= rec->shift; 951 rem = snd_cmipci_read_w(cm, reg);
952 if (rem < rec->dma_size)
953 goto ok;
954 }
955 printk(KERN_ERR "cmipci: invalid PCM pointer: %#x\n", rem);
956 return SNDRV_PCM_POS_XRUN;
957ok:
958 ptr = (rec->dma_size - (rem + 1)) >> rec->shift;
951#else 959#else
952 reg = rec->ch ? CM_REG_CH1_FRAME1 : CM_REG_CH0_FRAME1; 960 reg = rec->ch ? CM_REG_CH1_FRAME1 : CM_REG_CH0_FRAME1;
953 ptr = snd_cmipci_read(cm, reg) - rec->offset; 961 ptr = snd_cmipci_read(cm, reg) - rec->offset;