diff options
| author | Jaroslav Kysela <perex@perex.cz> | 2010-05-11 12:10:47 +0200 |
|---|---|---|
| committer | Jaroslav Kysela <perex@perex.cz> | 2010-05-11 12:17:55 +0200 |
| commit | f48f606d9f85a8b25c716082c73c36e9ff6f0cde (patch) | |
| tree | 3c3cf4754a49d9bdc5f3bd648b53860dbc696ab5 /sound/pci/hda/hda_intel.c | |
| parent | e54637205b00837bf00de916b0ae361c6aa0b139 (diff) | |
| download | blackbird-op-linux-f48f606d9f85a8b25c716082c73c36e9ff6f0cde.tar.gz blackbird-op-linux-f48f606d9f85a8b25c716082c73c36e9ff6f0cde.zip | |
[ALSA] snd-hda-intel: Improve azx_position_ok()
Add back the zero return value (activate workqueue) when
bdl_pos_adj is nonzero for position check.
Do the position related check only for first next period
using wallclk counter.
Return -1 value (ignore interrupt) when period_bytes
variable is zero.
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Diffstat (limited to 'sound/pci/hda/hda_intel.c')
| -rw-r--r-- | sound/pci/hda/hda_intel.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index 0a6c55bb7d6b..170610e1d7da 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -1890,9 +1890,8 @@ static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev) unsigned int pos; int stream; - wallclk = azx_readl(chip, WALLCLK); - if ((wallclk - azx_dev->start_wallclk) < - (azx_dev->period_wallclk * 2) / 3) + wallclk = azx_readl(chip, WALLCLK) - azx_dev->start_wallclk; + if (wallclk < (azx_dev->period_wallclk * 2) / 3) return -1; /* bogus (too early) interrupt */ stream = azx_dev->substream->stream; @@ -1910,9 +1909,11 @@ static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev) if (WARN_ONCE(!azx_dev->period_bytes, "hda-intel: zero azx_dev->period_bytes")) - return 0; /* this shouldn't happen! */ - if (pos % azx_dev->period_bytes > azx_dev->period_bytes / 2) - return 0; /* NG - it's below the period boundary */ + return -1; /* this shouldn't happen! */ + if (wallclk <= azx_dev->period_wallclk && + pos % azx_dev->period_bytes > azx_dev->period_bytes / 2) + /* NG - it's below the first next period boundary */ + return bdl_pos_adj[chip->dev_index] ? 0 : -1; azx_dev->start_wallclk = wallclk; return 1; /* OK, it's fine */ } |
