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Revert "ALSA: usb-audio: Split endpoint setups for hw_params and prepare"

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This reverts commit ff878b408a.

Unfortunately the recent fix seems bringing another regressions with
PulseAudio / pipewire, at least for Steinberg and MOTU devices.

As a temporary solution, do a straight revert.  The issue for Android
will be revisited again later by another different fix (if any).

Fixes: ff878b408a ("ALSA: usb-audio: Split endpoint setups for hw_params and prepare")
Cc: <stable@vger.kernel.org>
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=216500
Link: https://lore.kernel.org/r/20220920113929.25162-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2022-09-20 13:39:29 +02:00
parent c3afa2a402
commit 79764ec772
3 changed files with 20 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
sound/usb/endpoint.c
View File

@ -758,8 +758,7 @@ bool snd_usb_endpoint_compatible(struct snd_usb_audio *chip,
* The endpoint needs to be closed via snd_usb_endpoint_close() later.
*
* Note that this function doesn't configure the endpoint. The substream
* needs to set it up later via snd_usb_endpoint_set_params() and
* snd_usb_endpoint_prepare().
* needs to set it up later via snd_usb_endpoint_configure().
*/
struct snd_usb_endpoint *
snd_usb_endpoint_open(struct snd_usb_audio *chip,
@ -1293,13 +1292,12 @@ static int sync_ep_set_params(struct snd_usb_endpoint *ep)
/*
* snd_usb_endpoint_set_params: configure an snd_usb_endpoint
*
* It's called either from hw_params callback.
* Determine the number of URBs to be used on this endpoint.
* An endpoint must be configured before it can be started.
* An endpoint that is already running can not be reconfigured.
*/
int snd_usb_endpoint_set_params(struct snd_usb_audio *chip,
struct snd_usb_endpoint *ep)
static int snd_usb_endpoint_set_params(struct snd_usb_audio *chip,
struct snd_usb_endpoint *ep)
{
const struct audioformat *fmt = ep->cur_audiofmt;
int err;
@ -1382,18 +1380,18 @@ static int init_sample_rate(struct snd_usb_audio *chip,
}
/*
* snd_usb_endpoint_prepare: Prepare the endpoint
* snd_usb_endpoint_configure: Configure the endpoint
*
* This function sets up the EP to be fully usable state.
* It's called either from prepare callback.
* It's called either from hw_params or prepare callback.
* The function checks need_setup flag, and performs nothing unless needed,
* so it's safe to call this multiple times.
*
* This returns zero if unchanged, 1 if the configuration has changed,
* or a negative error code.
*/
int snd_usb_endpoint_prepare(struct snd_usb_audio *chip,
struct snd_usb_endpoint *ep)
int snd_usb_endpoint_configure(struct snd_usb_audio *chip,
struct snd_usb_endpoint *ep)
{
bool iface_first;
int err = 0;
@ -1414,6 +1412,9 @@ int snd_usb_endpoint_prepare(struct snd_usb_audio *chip,
if (err < 0)
goto unlock;
}
err = snd_usb_endpoint_set_params(chip, ep);
if (err < 0)
goto unlock;
goto done;
}
@ -1441,6 +1442,10 @@ int snd_usb_endpoint_prepare(struct snd_usb_audio *chip,
if (err < 0)
goto unlock;
err = snd_usb_endpoint_set_params(chip, ep);
if (err < 0)
goto unlock;
err = snd_usb_select_mode_quirk(chip, ep->cur_audiofmt);
if (err < 0)
goto unlock;

6
sound/usb/endpoint.h
View File

@ -17,10 +17,8 @@ snd_usb_endpoint_open(struct snd_usb_audio *chip,
bool is_sync_ep);
void snd_usb_endpoint_close(struct snd_usb_audio *chip,
struct snd_usb_endpoint *ep);
int snd_usb_endpoint_set_params(struct snd_usb_audio *chip,
struct snd_usb_endpoint *ep);
int snd_usb_endpoint_prepare(struct snd_usb_audio *chip,
struct snd_usb_endpoint *ep);
int snd_usb_endpoint_configure(struct snd_usb_audio *chip,
struct snd_usb_endpoint *ep);
int snd_usb_endpoint_get_clock_rate(struct snd_usb_audio *chip, int clock);
bool snd_usb_endpoint_compatible(struct snd_usb_audio *chip,

14
sound/usb/pcm.c
View File

@ -443,17 +443,17 @@ static int configure_endpoints(struct snd_usb_audio *chip,
if (stop_endpoints(subs, false))
sync_pending_stops(subs);
if (subs->sync_endpoint) {
err = snd_usb_endpoint_prepare(chip, subs->sync_endpoint);
err = snd_usb_endpoint_configure(chip, subs->sync_endpoint);
if (err < 0)
return err;
}
err = snd_usb_endpoint_prepare(chip, subs->data_endpoint);
err = snd_usb_endpoint_configure(chip, subs->data_endpoint);
if (err < 0)
return err;
snd_usb_set_format_quirk(subs, subs->cur_audiofmt);
} else {
if (subs->sync_endpoint) {
err = snd_usb_endpoint_prepare(chip, subs->sync_endpoint);
err = snd_usb_endpoint_configure(chip, subs->sync_endpoint);
if (err < 0)
return err;
}
@ -551,13 +551,7 @@ static int snd_usb_hw_params(struct snd_pcm_substream *substream,
subs->cur_audiofmt = fmt;
mutex_unlock(&chip->mutex);
if (subs->sync_endpoint) {
ret = snd_usb_endpoint_set_params(chip, subs->sync_endpoint);
if (ret < 0)
goto unlock;
}
ret = snd_usb_endpoint_set_params(chip, subs->data_endpoint);
ret = configure_endpoints(chip, subs);
unlock:
if (ret < 0)