diff options
| author | Arun Raghavan <arunr@valvesoftware.com> | 2026-08-03 15:07:52 -0700 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2026-08-04 13:20:01 +0200 |
| commit | dc9edf5878286beb140c401f4e0c3549d529049a (patch) | |
| tree | 8a4c17d0c7a0520b1a5fecfc3cb5f3ebbfd0fc63 | |
| parent | 1c03dd434e0a38a1d92fe02d38fa2c019bf807e0 (diff) | |
ALSA: hda/core: Log stream DMA errors on interrupt
The stream descriptor status register reports FIFO and descriptor
errors, but these are currently cleared silently along with the rest
of the interrupt status. Log them, rate-limited, so DMA problems are
visible instead of only manifesting as audible glitches.
Observed on some AMD GPU HDMI audio controllers under specific low power
circumstances.
Signed-off-by: Arun Raghavan <arunr@valvesoftware.com>
Cc: Arun Raghavan <arun@arunraghavan.net>
Link: https://patch.msgid.link/20260803-master-v1-1-9bcedb736978@valvesoftware.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
| -rw-r--r-- | sound/hda/core/controller.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sound/hda/core/controller.c b/sound/hda/core/controller.c index 32048ef32d96..78855ac357c6 100644 --- a/sound/hda/core/controller.c +++ b/sound/hda/core/controller.c @@ -688,6 +688,11 @@ int snd_hdac_bus_handle_stream_irq(struct hdac_bus *bus, unsigned int status, sd_status = snd_hdac_stream_readb(azx_dev, SD_STS); snd_hdac_stream_writeb(azx_dev, SD_STS, SD_INT_MASK); handled |= 1 << azx_dev->index; + if (sd_status & (SD_INT_FIFO_ERR | SD_INT_DESC_ERR)) { + dev_warn_ratelimited(bus->dev, + "stream %u dma error: 0x%02x\n", + azx_dev->index, sd_status); + } if ((!azx_dev->substream && !azx_dev->cstream) || !azx_dev->running || !(sd_status & SD_INT_COMPLETE)) continue; |