On Fri, 26 Jul 2019 11:59:18 +0200, Takashi Iwai wrote:
The last fallback of CORB/RIRB communication error recovery is to turn on the single command mode, and this last resort usually means that something is really screwed up. Instead of a normal dev_err(), show the error more clearly with dev_WARN_ONCE() with the caller stack trace.
Sorry, sent a wrong version. The correct one is with dev_WARN().
Takashi
-- 8< -- From: Takashi Iwai tiwai@suse.de Subject: [PATCH v2] ALSA: hda - Show the fatal CORB/RIRB error more clearly
The last fallback of CORB/RIRB communication error recovery is to turn on the single command mode, and this last resort usually means that something is really screwed up. Instead of a normal dev_err(), show the error more clearly with dev_WARN() with the caller stack trace.
Also, show the bus-reset fallback also as an error, too.
Signed-off-by: Takashi Iwai tiwai@suse.de --- sound/pci/hda/hda_controller.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/sound/pci/hda/hda_controller.c b/sound/pci/hda/hda_controller.c index c8d1b4316245..4b4cb0fd5102 100644 --- a/sound/pci/hda/hda_controller.c +++ b/sound/pci/hda/hda_controller.c @@ -864,10 +864,13 @@ static int azx_rirb_get_response(struct hdac_bus *bus, unsigned int addr, */ if (hbus->allow_bus_reset && !hbus->response_reset && !hbus->in_reset) { hbus->response_reset = 1; + dev_err(chip->card->dev, + "No response from codec, resetting bus: last cmd=0x%08x\n", + bus->last_cmd[addr]); return -EAGAIN; /* give a chance to retry */ }
- dev_err(chip->card->dev, + dev_WARN(chip->card->dev, "azx_get_response timeout, switching to single_cmd mode: last cmd=0x%08x\n", bus->last_cmd[addr]); chip->single_cmd = 1;