Commit Graph

2149 Commits

Author SHA1 Message Date
Peter Ujfalusi
aadb0330cf ALSA: usb-audio: scarlett_gen2: Fix another -Wformat-truncation warning
The recent enablement of -Wformat-truncation leads to a false-positive
warning for mixer_scarlett_gen2.c.

For suppressing the warning, replace snprintf() with scnprintf().
As stated in the above, truncation doesn't matter.

Fixes: 78bd8f5126 ("ALSA: usb-audio: scarlett_gen2: Fix -Wformat-truncation warning")
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20230919071205.10684-1-peter.ujfalusi@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-09-19 09:17:09 +02:00
Takashi Iwai
e9dde5a982 ALSA: caiaq: Fix -Wformat-truncation warning
The filling of card->longname can be gracefully truncated, as it's
only informative.  Use scnprintf() and suppress the superfluous
compile warning with -Wformat-truncation.

Link: https://lore.kernel.org/r/20230915082802.28684-5-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-09-15 13:21:31 +02:00
Takashi Iwai
78bd8f5126 ALSA: usb-audio: scarlett_gen2: Fix -Wformat-truncation warning
The recent enablement of -Wformat-truncation leads to a false-positive
warning for mixer_scarlett_gen2.c.

For suppressing the warning, replace snprintf() with scnprintf().
As stated in the above, truncation doesn't matter.

Link: https://lore.kernel.org/r/20230915082802.28684-4-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-09-15 13:21:30 +02:00
Peter Ujfalusi
26f7111abd ALSA: usb-audio: mixer: Remove temporary string use in parse_clock_source_unit
The kctl->id.name can be directly passed to snd_usb_copy_string_desc() and
if the string has been fetched the suffix can be appended with the
append_ctl_name() call.
The temporary name string becomes redundant and can be removed.

This change will also fixes the following compiler warning/error (W=1):

sound/usb/mixer.c: In function ‘parse_audio_unit’:
sound/usb/mixer.c:1972:29: error: ‘ Validity’ directive output may be truncated writing 9 bytes into a region of size between 1 and 44 [-Werror=format-truncation=]
 1972 |                          "%s Validity", name);
      |                             ^~~~~~~~~
In function ‘parse_clock_source_unit’,
    inlined from ‘parse_audio_unit’ at sound/usb/mixer.c:2892:10:
sound/usb/mixer.c:1971:17: note: ‘snprintf’ output between 10 and 53 bytes into a destination of size 44
 1971 |                 snprintf(kctl->id.name, sizeof(kctl->id.name),
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 1972 |                          "%s Validity", name);
      |                          ~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors

The warnings got brought to light by a recent patch upstream:
commit 6d4ab2e97d ("extrawarn: enable format and stringop overflow warnings in W=1")

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20230913093933.24564-1-peter.ujfalusi@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-09-13 12:08:49 +02:00
Takashi Iwai
b1757fa30e ALSA: usb-audio: Fix potential memory leaks at error path for UMP open
The allocation and initialization errors at alloc_midi_urbs() that is
called at MIDI 2.0 / UMP device are supposed to be handled at the
caller side by invoking free_midi_urbs().  However, free_midi_urbs()
loops only for ep->num_urbs entries, and since ep->num_entries wasn't
updated yet at the allocation / init error in alloc_midi_urbs(), this
entry won't be released.

The intention of free_midi_urbs() is to release the whole elements, so
change the loop size to NUM_URBS to scan over all elements for fixing
the missed releases.

Also, the call of free_midi_urbs() is missing at
snd_usb_midi_v2_open().  Although it'll be released later at
reopen/close or disconnection, it's better to release immediately at
the error path.

Fixes: ff49d1df79 ("ALSA: usb-audio: USB MIDI 2.0 UMP support")
Reported-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Closes: https://lore.kernel.org/r/fc275ed315b9157952dcf2744ee7bdb78defdb5f.1693746347.git.christophe.jaillet@wanadoo.fr
Link: https://lore.kernel.org/r/20230905054511.20502-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-09-05 10:10:48 +02:00
Takashi Iwai
ab574d1629 ALSA: usb-audio: Don't try to submit URBs after disconnection
USB-audio driver can still submit URBs while the device is being
disconnected, and it may result in spurious error messages like:
  usb 1-2: cannot submit urb (err = -19)
  usb 1-2: Unable to submit urb #0: -19 at snd_usb_queue_pending_output_urbs
  usb 1-2: cannot submit urb 0, error -19: no device
Although those are harmless, they are just ugly.

This patch tries to avoid spewing such error messages when the device
is already at the disconnected state.  It also skips the superfluous
xfer notification, too.

Link: https://lore.kernel.org/r/20230828101924.27107-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-08-28 15:03:35 +02:00
Takashi Iwai
5f11dd938f ALSA: usb-audio: Attach legacy rawmidi after probing all UMP EPs
The legacy rawmidi devices are the shadows of the main UMP devices,
hence it's better to initialize them after all UMP Endpoints are
parsed.  Then, at the moment the legacy rawmidi is created, we already
know the static flag or the proper EP name string, and we can fill
those information at UMP core side instead of fiddling the attributes
at a later point.

Fixes: ec362b63c4 ("ALSA: usb-audio: Enable the legacy raw MIDI support")
Link: https://lore.kernel.org/r/20230824075108.29958-2-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-08-24 10:03:15 +02:00
Takashi Iwai
a057efde80 Merge branch 'for-linus' into for-next
Back-merge the 6.5-devel branch for the clean patch application for
6.6 and resolving merge conflicts.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-08-24 09:27:21 +02:00
Takashi Iwai
5fadc941d0 ALSA: usb-audio: Fix init call orders for UAC1
There have been reports of USB-audio driver spewing errors at the
probe time on a few devices like Jabra and Logitech.  The suggested
fix there couldn't be applied as is, unfortunately, because it'll
likely break other devices.

But, the patch suggested an interesting point: looking at the current
init code in stream.c, one may notice that it does initialize
differently from the device setup in endpoint.c.  Namely, for UAC1, we
should call snd_usb_init_pitch() and snd_usb_init_sample_rate() after
setting the interface, while the init sequence at parsing calls them
before setting the interface blindly.

This patch changes the init sequence at parsing for UAC1 (and other
devices that need a similar behavior) to be aligned with the rest of
the code, setting the interface at first.  And, this fixes the
long-standing problems on a few UAC1 devices like Jabra / Logitech,
as reported, too.

Reported-and-tested-by: Joakim Tjernlund <joakim.tjernlund@infinera.com>
Closes: https://lore.kernel.org/r/202bbbc0f51522e8545783c4c5577d12a8e2d56d.camel@infinera.com
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20230821111857.28926-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-08-21 16:20:25 +02:00
Takashi Iwai
bc41a7228c ALSA: pcm: Don't embed device
So far we use the embedded struct device for each PCM substreams in
struct snd_pcm.  This may result in UAF when the delayed kobj release
is used; each corresponding struct device is still accessed at the
(delayed) device release, while the snd_pcm object may be already
gone.

As a workaround, detach the struct device from the snd_pcm object by
allocating via the new snd_device_alloc() helper.

A caveat is that we store the PCM substream pointer to drvdata since
the device resume and others require the access to it.

This patch is based on the fix Curtis posted initially.  In this
patch, the changes are split and use the new helper function instead.

Link: https://lore.kernel.org/r/20230801171928.1460120-1-cujomalainey@chromium.org
Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Curtis Malainey <cujomalainey@chromium.org>
Tested-by: Curtis Malainey <cujomalainey@chromium.org>
Link: https://lore.kernel.org/r/20230816160252.23396-4-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-08-17 09:23:45 +02:00
Takashi Iwai
6a66b01de4 ALSA: control: Don't embed ctl_dev
Embedding the ctl_dev in the snd_card object may result in UAF when
the delayed kobj release is used; at the delayed kobj release, it
still accesses the struct device itself while the card memory (that
embeds the struct device) may be already gone.

As a workaround, detach the struct device from the card object by
allocating via the new snd_device_alloc() helper.  The rest are just
replacing ctl_dev access to the pointer.

This is based on the fix Curtis posted initially.  In this patch, the
changes are split and use the new helper function instead.

Link: https://lore.kernel.org/r/20230801171928.1460120-1-cujomalainey@chromium.org
Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Curtis Malainey <cujomalainey@chromium.org>
Tested-by: Curtis Malainey <cujomalainey@chromium.org>
Link: https://lore.kernel.org/r/20230816160252.23396-3-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-08-17 09:23:30 +02:00
dengxiang
788449ae57 ALSA: usb-audio: Add support for Mythware XA001AU capture and playback interfaces.
This patch adds a USB quirk for Mythware XA001AU USB interface.

Signed-off-by: dengxiang <dengxiang@nfschina.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20230803024437.370069-1-dengxiang@nfschina.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-08-04 12:47:30 +02:00
Yue Haibing
fbeb1ec85d ALSA: usb-audio: Remove unused function declaration
Commit 68e67f40b7 ("ALSA: snd-usb: move calls to usb_set_interface")
leave this unused declaration.

Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20230801144512.18716-1-yuehaibing@huawei.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-08-01 16:56:57 +02:00
Justin Stitt
2ad27caab4 ALSA: bcd2000: refactor deprecated strncpy
`strncpy` is deprecated for use on NUL-terminated destination strings [1].

A suitable replacement is `strscpy` [2] due to the fact that it
guarantees NUL-termination on its destination buffer argument which is
_not_ always the case for `strncpy`!

It should be noted that, in this case, the destination buffer has a
length strictly greater than the source string. Moreover, the source
string is NUL-terminated (and so is the destination) which means there
was no real bug happening here. Nonetheless, this patch would get us one
step closer to eliminating the `strncpy` API in the kernel, as its use
is too ambiguous. We need to favor less ambiguous replacements such as:
strscpy, strscpy_pad, strtomem and strtomem_pad (amongst others).

Technically, my patch yields subtly different behavior. The original
implementation with `strncpy` would fill the entire destination buffer
with null bytes [3] while `strscpy` will leave the junk, uninitialized
bytes trailing after the _mandatory_ NUL-termination. So, if somehow
`card->driver` or `card->shortname` require this NUL-padding behavior
then `strscpy_pad` should be used. My interpretation, though, is that
the aforementioned fields are just fine as NUL-terminated strings.
Please correct my assumptions if needed and I'll send in a v2.

[1]: www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings
[2]: manpages.debian.org/testing/linux-manual-4.8/strscpy.9.en.html
[3]: https://linux.die.net/man/3/strncpy

Link: https://github.com/KSPP/linux/issues/90
Link: https://lore.kernel.org/r/20230727-sound-xen-v1-1-89dd161351f1@google.com (related ALSA patch)
Signed-off-by: Justin Stitt <justinstitt@google.com>
Link: https://lore.kernel.org/r/20230727-sound-usb-bcd2000-v1-1-0dc73684b2f0@google.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-07-29 13:53:56 +02:00
Jussi Laako
f7fea075ed ALSA: usb-audio: Update for native DSD support quirks
Maintenance patch for native DSD support.

Remove incorrect T+A device quirks. Move set of device quirks to vendor
quirks. Add set of missing device and vendor quirks.

Signed-off-by: Jussi Laako <jussi@sonarnerd.net>
Link: https://lore.kernel.org/r/20230726165645.404311-1-jussi@sonarnerd.net
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-07-26 20:04:34 +02:00
Takashi Iwai
3da4350637 ALSA: usb-audio: Add quirk for Microsoft Modern Wireless Headset
Microsoft Modern Wireless Headset (appearing on the host as "Microsoft
USB Link") has a playback and a capture mixer volume/switch, but they
are fairly broken.  The descriptor reports wrong dB ranges for
playback, and the capture volume/switch don't influence on the actual
recording at all.  Moreover, there seem instabilities in the
connection, and at best, we should disable the runtime PM.

So this ended up with a quirk entry for:
- Correct the playback dB range;
  I picked up some reasonable values but it's a guess work
- Disable the capture mixer;
  it's completely useless and confuses PA/PW
- Suppress get-sample-rate, apply the delay for message handling,
  and suppress the auto-suspend

The behavior of the wheel control on the headset is somehow flaky,
too, but it's an issue of HID.

Link: https://bugzilla.suse.com/show_bug.cgi?id=1207129
Link: https://lore.kernel.org/r/20230725092057.15115-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-07-25 14:21:11 +02:00
Takashi Iwai
a15b513756 Merge branch 'for-next' into for-linus
Pull the 6.5-devel branch for upstreaming.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-06-26 15:23:23 +02:00
Lukasz Tyl
122e2cb7e1 ALSA: usb-audio: Add quirk flag for HEM devices to enable native DSD playback
This commit adds new DEVICE_FLG with QUIRK_FLAG_DSD_RAW and Vendor Id for
HEM devices which supports native DSD. Prior to this change Linux kernel
was not enabling native DSD playback for HEM devices, and as a result,
DSD audio was being converted to PCM "on the fly". HEM devices,
when connected to the system, would only play audio in PCM format,
even if the source material was in DSD format. With the addition of new
VENDOR_FLG in the quircks.c file, the devices are now correctly
recognized, and raw DSD data is transmitted to the device,
allowing for native DSD playback.

Signed-off-by: Lukasz Tyl <ltyl@hem-e.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20230614122524.30271-1-ltyl@hem-e.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-06-16 09:28:18 +02:00
Takashi Iwai
8ba61c9f6c ALSA: usb-audio: Fix broken resume due to UAC3 power state
As reported in the bugzilla below, the PM resume of a UAC3 device may
fail due to the incomplete power state change, stuck at D1.  The
reason is that the driver expects the full D0 power state change only
at hw_params, while the normal PCM resume procedure doesn't call
hw_params.

For fixing the bug, we add the same power state update to D0 at the
prepare callback, which is certainly called by the resume procedure.

Note that, with this change, the power state change in the hw_params
becomes almost redundant, since snd_usb_hw_params() doesn't touch the
parameters (at least it tires so).  But dropping it is still a bit
risky (e.g. we have the media-driver binding), so I leave the D0 power
state change in snd_usb_hw_params() as is for now.

Fixes: a0a4959eb4 ("ALSA: usb-audio: Operate UAC3 Power Domains in PCM callbacks")
Cc: <stable@vger.kernel.org>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=217539
Link: https://lore.kernel.org/r/20230612132818.29486-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-06-16 09:28:08 +02:00
Takashi Iwai
01dfa8e969 ALSA: ump: Add info flag bit for static blocks
UMP v1.1 spec allows to inform whether the function blocks are static
and not dynamically updated.  Add a new flag bit to
snd_ump_endpoint_info to reflect that attribute, too.

The flag is set when a USB MIDI device is still in the old MIDI 2.0
without UMP 1.1 support.  Then the driver falls back to GTBs, and they
are supposed to be static-only.

Link: https://lore.kernel.org/r/20230612081054.17200-10-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-06-12 18:22:34 +02:00
Takashi Iwai
960a1149c8 ALSA: usb-audio: Add midi2_ump_probe option
Add a new option to enable/disable the UMP Endpoint probing.
Some firmware seems screwed up when such a new command issued, and
this option allows user to suppress it.

Link: https://lore.kernel.org/r/20230612081054.17200-5-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-06-12 18:22:29 +02:00
Takashi Iwai
54852e8f40 ALSA: usb-audio: Parse UMP Endpoint and Function Blocks at first
Try to parse the UMP Endpoint and UMP Function Blocks for building the
topology at first.  Only when those are missing (e.g. on an older USB
MIDI 2.0 spec or a unidirectional endpoint), the driver still creates
blocks based on USB group terminal block information as fallback.

Link: https://lore.kernel.org/r/20230612081054.17200-4-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-06-12 18:22:28 +02:00
Takashi Iwai
f4487c42aa ALSA: usb-audio: Inform inconsistent protocols in GTBs
When parsing Group Terminal Blocks, we overwrote the preferred
protocol and the protocol capabilities silently from the last parsed
GTB.  This patch adds the information print indicating the unexpected
overrides instead of silent action.

Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20230523075358.9672-17-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-05-23 12:11:13 +02:00
Takashi Iwai
ec362b63c4 ALSA: usb-audio: Enable the legacy raw MIDI support
Attach the legacy rawmidi devices when enabled in Kconfig accordingly.

Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20230523075358.9672-16-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-05-23 12:11:12 +02:00
Takashi Iwai
6b41e64a5d ALSA: ump: Redirect rawmidi substream access via own helpers
This is a code refactoring for abstracting the rawmidi access to the
UMP's own helpers.  It's a preliminary work for the later code
refactoring of the UMP layer.

Until now, we access to the rawmidi substream directly from the
driver via rawmidi access helpers, but after this change, the driver
is supposed to access via the newly introduced snd_ump_ops and
receive/transmit via snd_ump_receive() and snd_ump_transmit() helpers.
As of this commit, those are merely wrappers for the rawmidi
substream, and no much function change is seen here.

Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20230523075358.9672-14-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-05-23 12:11:08 +02:00
Takashi Iwai
d9c9987686 ALSA: usb-audio: Create UMP blocks from USB MIDI GTBs
USB MIDI spec defines the Group Terminal Blocks (GTB) that associate
multiple UMP Groups.  Those correspond to snd_ump_block entities in
ALSA UMP abstraction, and now we create those UMP Block objects for
each UMP Endpoint from the parsed GTB information.

Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20230523075358.9672-13-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-05-23 12:11:07 +02:00
Takashi Iwai
51701400a9 ALSA: usb-audio: Trim superfluous "MIDI" suffix from UMP EP name
A single USB audio device may have multiple interfaces for different
purposes (e.g. audio, MIDI and HID), where the iInterface descriptor
of each interface may contain an own suffix, e.g. "MIDI" for a MIDI
interface.  as such a suffix is superfluous as a rawmidi and UMP
Endpoint name, this patch trims the superfluous "MIDI" suffix from the
name string.

Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20230523075358.9672-12-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-05-23 12:11:06 +02:00
Takashi Iwai
06cf3bf09d ALSA: usb-audio: Get UMP EP name string from USB interface
USB descriptor may provide a nicer name for USB interface, and we may
take it as the UMP Endpoint name.  The UMP EP name is copied as the
rawmidi name, too.

Also, fill the UMP block product_id field from the iSerialNumber
string of the USB device descriptor as a recommended unique id, too.

Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20230523075358.9672-11-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-05-23 12:11:05 +02:00
Takashi Iwai
ff49d1df79 ALSA: usb-audio: USB MIDI 2.0 UMP support
This patch provides a basic support for USB MIDI 2.0.  As of this
patch, the driver creates a UMP device per MIDI I/O endpoints, which
serves as a dumb terminal to read/write UMP streams.

A new Kconfig CONFIG_SND_USB_AUDIO_MIDI_V2 manages whether to enable
or disable the MIDI 2.0 support.  Also, the driver provides a new
module option, midi2_enable, to allow disabling the MIDI 2.0 at
runtime, too.  When MIDI 2.0 support is disabled, the driver tries to
fall back to the already existing MIDI 1.0 device (each MIDI 2.0
device is supposed to provide the MIDI 1.0 interface at the altset
0).

For now, the driver doesn't manage any MIDI-CI or other protocol
setups by itself, but relies on the default protocol given via the
group terminal block descriptors.

The MIDI 1.0 messages on MIDI 2.0 device will be automatically
converted in ALSA sequencer in a later patch.  As of this commit, the
driver accepts merely the rawmidi UMP accesses.

The driver builds up the topology in the following way:
- Create an object for each MIDI endpoint belonging to the USB
  interface
- Find MIDI EP "pairs" that share the same GTB;
  note that MIDI EP is unidirectional, while UMP is (normally)
  bidirectional, so two MIDI EPs can form a single UMP EP
- A UMP endpoint object is created for each I/O pair
- For remaining "solo" MIDI EPs, create unidirectional UMP EPs
- Finally, parse GTBs and fill the protocol bits on each UMP

So the driver may support multiple UMP Endpoints in theory, although
most devices are supposed to have a single UMP EP that can contain up
to 16 groups -- which should be large enough.

Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20230523075358.9672-10-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-05-23 12:11:02 +02:00
Takashi Iwai
bb1bf4fa59 ALSA: usb-audio: Manage number of rawmidis globally
We're going to create rawmidi objects for MIDI 2.0 in a different code
from the current code for USB-MIDI 1.0.  As a preliminary work, this
patch adds the number of rawmidi objects to keep globally in a
USB-audio card instance, so that it can be referred from both MIDI 1.0
and 2.0 code.

Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20230523075358.9672-8-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-05-23 12:11:00 +02:00
Takashi Iwai
359b431547 ALSA: usb-audio: Add a sample rate workaround for Line6 Pod Go
Line6 Pod Go (0e41:424b) requires the similar workaround for the fixed
48k sample rate like other Line6 models.  This patch adds the
corresponding entry to line6_parse_audio_format_rate_quirk().

Reported-by: John Humlick <john@humlick.org>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20230512075858.22813-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-05-12 10:19:55 +02:00
Ruliang Lin
0d727e1856 ALSA: caiaq: input: Add error handling for unsupported input methods in snd_usb_caiaq_input_init
Smatch complains that:
snd_usb_caiaq_input_init() warn: missing error code 'ret'

This patch adds a new case to handle the situation where the
device does not support any input methods in the
`snd_usb_caiaq_input_init` function. It returns an `-EINVAL` error code
to indicate that no input methods are supported on the device.

Fixes: 523f1dce37 ("[ALSA] Add Native Instrument usb audio device support")
Signed-off-by: Ruliang Lin <u202112092@hust.edu.cn>
Reviewed-by: Dongliang Mu <dzm91@hust.edu.cn>
Acked-by: Daniel Mack <daniel@zonque.org>
Link: https://lore.kernel.org/r/20230504065054.3309-1-u202112092@hust.edu.cn
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-05-04 09:50:11 +02:00
Geraldo Nascimento
7501f47297 ALSA: usb-audio: Add quirk for Pioneer DDJ-800
One more Pioneer quirk, this time for DDJ-800, which is quite similar like
other DJ DDJ models but with slightly different EPs or channels.

Signed-off-by: Geraldo Nascimento <geraldogabriel@gmail.com>
Tested-by: Grégory Desor <gregory.desor@free.fr>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/ZFLLzgEcsSF5aIHG@geday
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-05-04 09:39:06 +02:00
Chris Down
2db2be5607 ALSA: usb-audio: Rate limit usb_set_interface error reporting
When an error occurs during USB disconnection sometimes things can go
wrong as endpoint_set_interface may end up being called repeatedly. For
example:

% dmesg --notime | grep 'usb 3-7.1.4' | sort | uniq -c | head -2
   3069 usb 3-7.1.4: 1:1: usb_set_interface failed (-19)
    908 usb 3-7.1.4: 1:1: usb_set_interface failed (-71)

In my case, there sometimes are hundreds of these usb_set_interface
failure messages a second when I disconnect the hub that has my USB
audio device.

These messages can take a huge amount of the kmsg ringbuffer and don't
provide any extra information over the previous ones, so ratelimit them.

Signed-off-by: Chris Down <chris@chrisdown.name>
Link: https://lore.kernel.org/r/ZEKf8UYBYa1h4JWR@chrisdown.name
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-04-21 17:07:28 +02:00
Takashi Iwai
a7a0dcdff4 Merge branch 'for-linus' into for-next
Back-merge of 6.3 devel branch for further changes of PCM and
documentation.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-03-24 14:52:10 +01:00
Takashi Iwai
fa4e7a6fa1 ALSA: usb-audio: Fix regression on detection of Roland VS-100
It's been reported that the recent kernel can't probe the PCM devices
on Roland VS-100 properly, and it turned out to be a regression by the
recent addition of the bit shift range check for the format bits.
In the old code, we just did bit-shift and it resulted in zero, which
is then corrected to the standard PCM format, while the new code
explicitly returns an error in such a case.

For addressing the regression, relax the check and fallback to the
standard PCM type (with the info output).

Fixes: 43d5ca88df ("ALSA: usb-audio: Fix potential out-of-bounds shift")
Cc: <stable@vger.kernel.org>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=217084
Link: https://lore.kernel.org/r/20230324075005.19403-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-03-24 08:50:51 +01:00
Takashi Iwai
8c721c53dd ALSA: usb-audio: Fix recursive locking at XRUN during syncing
The recent support of low latency playback in USB-audio driver made
the snd_usb_queue_pending_output_urbs() function to be called via PCM
ack ops.  In the new code path, the function is performed already in
the PCM stream lock.  The problem is that, when an XRUN is detected,
the function calls snd_pcm_xrun() to notify, but snd_pcm_xrun() is
supposed to be called only outside the stream lock.  As a result, it
leads to a deadlock of PCM stream locking.

For avoiding such a recursive locking, this patch adds an additional
check to the code paths in PCM core that call the ack callback; now it
checks the error code from the callback, and if it's -EPIPE, the XRUN
is handled in the PCM core side gracefully.  Along with it, the
USB-audio driver code is changed to follow that, i.e. -EPIPE is
returned instead of the explicit snd_pcm_xrun() call when the function
is performed already in the stream lock.

Fixes: d5f871f89e ("ALSA: usb-audio: Improved lowlatency playback support")
Reported-and-tested-by: John Keeping <john@metanate.com>
Link: https://lore.kernel.org/r/20230317195128.3911155-1-john@metanate.com
Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Reviewed-by; Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20230320142838.494-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-03-21 07:10:43 +01:00
Ruslan Bilovol
ce8e5f202f ALSA: usb-audio: remove Wireless USB dead code
Wireless USB host controller support has been removed
from Linux Kernel more than 3 years ago in commit
caa6772db4 ("Staging: remove wusbcore and UWB from the
kernel tree."), and the associated code in the
snd-usb-audio driver became unused and untested.

If in the future somebody will return WUSB/UWB support
back to the kernel, the snd-usb-audio driver will reject
Wireless USB audio devices at probe stage, and this patch
should be reverted.

Signed-off-by: Ruslan Bilovol <ruslan.bilovol@gmail.com>
Link: https://lore.kernel.org/r/20230312222857.296623-1-ruslan.bilovol@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-03-14 17:00:57 +01:00
Linus Torvalds
3822a7c409 - Daniel Verkamp has contributed a memfd series ("mm/memfd: add
F_SEAL_EXEC") which permits the setting of the memfd execute bit at
   memfd creation time, with the option of sealing the state of the X bit.
 
 - Peter Xu adds a patch series ("mm/hugetlb: Make huge_pte_offset()
   thread-safe for pmd unshare") which addresses a rare race condition
   related to PMD unsharing.
 
 - Several folioification patch serieses from Matthew Wilcox, Vishal
   Moola, Sidhartha Kumar and Lorenzo Stoakes
 
 - Johannes Weiner has a series ("mm: push down lock_page_memcg()") which
   does perform some memcg maintenance and cleanup work.
 
 - SeongJae Park has added DAMOS filtering to DAMON, with the series
   "mm/damon/core: implement damos filter".  These filters provide users
   with finer-grained control over DAMOS's actions.  SeongJae has also done
   some DAMON cleanup work.
 
 - Kairui Song adds a series ("Clean up and fixes for swap").
 
 - Vernon Yang contributed the series "Clean up and refinement for maple
   tree".
 
 - Yu Zhao has contributed the "mm: multi-gen LRU: memcg LRU" series.  It
   adds to MGLRU an LRU of memcgs, to improve the scalability of global
   reclaim.
 
 - David Hildenbrand has added some userfaultfd cleanup work in the
   series "mm: uffd-wp + change_protection() cleanups".
 
 - Christoph Hellwig has removed the generic_writepages() library
   function in the series "remove generic_writepages".
 
 - Baolin Wang has performed some maintenance on the compaction code in
   his series "Some small improvements for compaction".
 
 - Sidhartha Kumar is doing some maintenance work on struct page in his
   series "Get rid of tail page fields".
 
 - David Hildenbrand contributed some cleanup, bugfixing and
   generalization of pte management and of pte debugging in his series "mm:
   support __HAVE_ARCH_PTE_SWP_EXCLUSIVE on all architectures with swap
   PTEs".
 
 - Mel Gorman and Neil Brown have removed the __GFP_ATOMIC allocation
   flag in the series "Discard __GFP_ATOMIC".
 
 - Sergey Senozhatsky has improved zsmalloc's memory utilization with his
   series "zsmalloc: make zspage chain size configurable".
 
 - Joey Gouly has added prctl() support for prohibiting the creation of
   writeable+executable mappings.  The previous BPF-based approach had
   shortcomings.  See "mm: In-kernel support for memory-deny-write-execute
   (MDWE)".
 
 - Waiman Long did some kmemleak cleanup and bugfixing in the series
   "mm/kmemleak: Simplify kmemleak_cond_resched() & fix UAF".
 
 - T.J.  Alumbaugh has contributed some MGLRU cleanup work in his series
   "mm: multi-gen LRU: improve".
 
 - Jiaqi Yan has provided some enhancements to our memory error
   statistics reporting, mainly by presenting the statistics on a per-node
   basis.  See the series "Introduce per NUMA node memory error
   statistics".
 
 - Mel Gorman has a second and hopefully final shot at fixing a CPU-hog
   regression in compaction via his series "Fix excessive CPU usage during
   compaction".
 
 - Christoph Hellwig does some vmalloc maintenance work in the series
   "cleanup vfree and vunmap".
 
 - Christoph Hellwig has removed block_device_operations.rw_page() in ths
   series "remove ->rw_page".
 
 - We get some maple_tree improvements and cleanups in Liam Howlett's
   series "VMA tree type safety and remove __vma_adjust()".
 
 - Suren Baghdasaryan has done some work on the maintainability of our
   vm_flags handling in the series "introduce vm_flags modifier functions".
 
 - Some pagemap cleanup and generalization work in Mike Rapoport's series
   "mm, arch: add generic implementation of pfn_valid() for FLATMEM" and
   "fixups for generic implementation of pfn_valid()"
 
 - Baoquan He has done some work to make /proc/vmallocinfo and
   /proc/kcore better represent the real state of things in his series
   "mm/vmalloc.c: allow vread() to read out vm_map_ram areas".
 
 - Jason Gunthorpe rationalized the GUP system's interface to the rest of
   the kernel in the series "Simplify the external interface for GUP".
 
 - SeongJae Park wishes to migrate people from DAMON's debugfs interface
   over to its sysfs interface.  To support this, we'll temporarily be
   printing warnings when people use the debugfs interface.  See the series
   "mm/damon: deprecate DAMON debugfs interface".
 
 - Andrey Konovalov provided the accurately named "lib/stackdepot: fixes
   and clean-ups" series.
 
 - Huang Ying has provided a dramatic reduction in migration's TLB flush
   IPI rates with the series "migrate_pages(): batch TLB flushing".
 
 - Arnd Bergmann has some objtool fixups in "objtool warning fixes".
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Merge tag 'mm-stable-2023-02-20-13-37' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull MM updates from Andrew Morton:

 - Daniel Verkamp has contributed a memfd series ("mm/memfd: add
   F_SEAL_EXEC") which permits the setting of the memfd execute bit at
   memfd creation time, with the option of sealing the state of the X
   bit.

 - Peter Xu adds a patch series ("mm/hugetlb: Make huge_pte_offset()
   thread-safe for pmd unshare") which addresses a rare race condition
   related to PMD unsharing.

 - Several folioification patch serieses from Matthew Wilcox, Vishal
   Moola, Sidhartha Kumar and Lorenzo Stoakes

 - Johannes Weiner has a series ("mm: push down lock_page_memcg()")
   which does perform some memcg maintenance and cleanup work.

 - SeongJae Park has added DAMOS filtering to DAMON, with the series
   "mm/damon/core: implement damos filter".

   These filters provide users with finer-grained control over DAMOS's
   actions. SeongJae has also done some DAMON cleanup work.

 - Kairui Song adds a series ("Clean up and fixes for swap").

 - Vernon Yang contributed the series "Clean up and refinement for maple
   tree".

 - Yu Zhao has contributed the "mm: multi-gen LRU: memcg LRU" series. It
   adds to MGLRU an LRU of memcgs, to improve the scalability of global
   reclaim.

 - David Hildenbrand has added some userfaultfd cleanup work in the
   series "mm: uffd-wp + change_protection() cleanups".

 - Christoph Hellwig has removed the generic_writepages() library
   function in the series "remove generic_writepages".

 - Baolin Wang has performed some maintenance on the compaction code in
   his series "Some small improvements for compaction".

 - Sidhartha Kumar is doing some maintenance work on struct page in his
   series "Get rid of tail page fields".

 - David Hildenbrand contributed some cleanup, bugfixing and
   generalization of pte management and of pte debugging in his series
   "mm: support __HAVE_ARCH_PTE_SWP_EXCLUSIVE on all architectures with
   swap PTEs".

 - Mel Gorman and Neil Brown have removed the __GFP_ATOMIC allocation
   flag in the series "Discard __GFP_ATOMIC".

 - Sergey Senozhatsky has improved zsmalloc's memory utilization with
   his series "zsmalloc: make zspage chain size configurable".

 - Joey Gouly has added prctl() support for prohibiting the creation of
   writeable+executable mappings.

   The previous BPF-based approach had shortcomings. See "mm: In-kernel
   support for memory-deny-write-execute (MDWE)".

 - Waiman Long did some kmemleak cleanup and bugfixing in the series
   "mm/kmemleak: Simplify kmemleak_cond_resched() & fix UAF".

 - T.J. Alumbaugh has contributed some MGLRU cleanup work in his series
   "mm: multi-gen LRU: improve".

 - Jiaqi Yan has provided some enhancements to our memory error
   statistics reporting, mainly by presenting the statistics on a
   per-node basis. See the series "Introduce per NUMA node memory error
   statistics".

 - Mel Gorman has a second and hopefully final shot at fixing a CPU-hog
   regression in compaction via his series "Fix excessive CPU usage
   during compaction".

 - Christoph Hellwig does some vmalloc maintenance work in the series
   "cleanup vfree and vunmap".

 - Christoph Hellwig has removed block_device_operations.rw_page() in
   ths series "remove ->rw_page".

 - We get some maple_tree improvements and cleanups in Liam Howlett's
   series "VMA tree type safety and remove __vma_adjust()".

 - Suren Baghdasaryan has done some work on the maintainability of our
   vm_flags handling in the series "introduce vm_flags modifier
   functions".

 - Some pagemap cleanup and generalization work in Mike Rapoport's
   series "mm, arch: add generic implementation of pfn_valid() for
   FLATMEM" and "fixups for generic implementation of pfn_valid()"

 - Baoquan He has done some work to make /proc/vmallocinfo and
   /proc/kcore better represent the real state of things in his series
   "mm/vmalloc.c: allow vread() to read out vm_map_ram areas".

 - Jason Gunthorpe rationalized the GUP system's interface to the rest
   of the kernel in the series "Simplify the external interface for
   GUP".

 - SeongJae Park wishes to migrate people from DAMON's debugfs interface
   over to its sysfs interface. To support this, we'll temporarily be
   printing warnings when people use the debugfs interface. See the
   series "mm/damon: deprecate DAMON debugfs interface".

 - Andrey Konovalov provided the accurately named "lib/stackdepot: fixes
   and clean-ups" series.

 - Huang Ying has provided a dramatic reduction in migration's TLB flush
   IPI rates with the series "migrate_pages(): batch TLB flushing".

 - Arnd Bergmann has some objtool fixups in "objtool warning fixes".

* tag 'mm-stable-2023-02-20-13-37' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (505 commits)
  include/linux/migrate.h: remove unneeded externs
  mm/memory_hotplug: cleanup return value handing in do_migrate_range()
  mm/uffd: fix comment in handling pte markers
  mm: change to return bool for isolate_movable_page()
  mm: hugetlb: change to return bool for isolate_hugetlb()
  mm: change to return bool for isolate_lru_page()
  mm: change to return bool for folio_isolate_lru()
  objtool: add UACCESS exceptions for __tsan_volatile_read/write
  kmsan: disable ftrace in kmsan core code
  kasan: mark addr_has_metadata __always_inline
  mm: memcontrol: rename memcg_kmem_enabled()
  sh: initialize max_mapnr
  m68k/nommu: add missing definition of ARCH_PFN_OFFSET
  mm: percpu: fix incorrect size in pcpu_obj_full_size()
  maple_tree: reduce stack usage with gcc-9 and earlier
  mm: page_alloc: call panic() when memoryless node allocation fails
  mm: multi-gen LRU: avoid futile retries
  migrate_pages: move THP/hugetlb migration support check to simplify code
  migrate_pages: batch flushing TLB
  migrate_pages: share more code between _unmap and _move
  ...
2023-02-23 17:09:35 -08:00
Suren Baghdasaryan
1c71222e5f mm: replace vma->vm_flags direct modifications with modifier calls
Replace direct modifications to vma->vm_flags with calls to modifier
functions to be able to track flag changes and to keep vma locking
correctness.

[akpm@linux-foundation.org: fix drivers/misc/open-dice.c, per Hyeonggon Yoo]
Link: https://lkml.kernel.org/r/20230126193752.297968-5-surenb@google.com
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Mike Rapoport (IBM) <rppt@kernel.org>
Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arjun Roy <arjunroy@google.com>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: David Rientjes <rientjes@google.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Greg Thelen <gthelen@google.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jann Horn <jannh@google.com>
Cc: Joel Fernandes <joelaf@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Cc: Laurent Dufour <ldufour@linux.ibm.com>
Cc: Lorenzo Stoakes <lstoakes@gmail.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Minchan Kim <minchan@google.com>
Cc: Paul E. McKenney <paulmck@kernel.org>
Cc: Peter Oskolkov <posk@google.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Punit Agrawal <punit.agrawal@bytedance.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Soheil Hassas Yeganeh <soheil@google.com>
Cc: Song Liu <songliubraving@fb.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-09 16:51:39 -08:00
Takashi Iwai
dfd5fe19db ALSA: usb-audio: Add FIXED_RATE quirk for JBL Quantum610 Wireless
JBL Quantum610 Wireless (0ecb:205c) requires the same workaround that
was used for JBL Quantum810 for limiting the sample rate.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=216798
Link: https://lore.kernel.org/r/20230118165947.22317-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-01-18 18:02:48 +01:00
Jaroslav Kysela
92a9c0ad86 ALSA: usb-audio: Fix possible NULL pointer dereference in snd_usb_pcm_has_fixed_rate()
The subs function argument may be NULL, so do not use it before the NULL check.

Fixes: 291e9da914 ("ALSA: usb-audio: Always initialize fixed_rate in snd_usb_find_implicit_fb_sync_format()")
Reported-by: coverity-bot <keescook@chromium.org>
Link: https://lore.kernel.org/alsa-devel/202301121424.4A79A485@keescook/
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20230113085311.623325-1-perex@perex.cz
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-01-13 09:54:55 +01:00
Jaroslav Kysela
291e9da914 ALSA: usb-audio: Always initialize fixed_rate in snd_usb_find_implicit_fb_sync_format()
Handle the fallback code path, too.

Fixes: fd28941cff ("ALSA: usb-audio: Add new quirk FIXED_RATE for JBL Quantum810 Wireless")
BugLink: https://lore.kernel.org/alsa-devel/Y7frf3N%2FxzvESEsN@kili/
Reported-by: Dan Carpenter <error27@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20230109141133.335543-1-perex@perex.cz
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-01-09 16:05:21 +01:00
Takashi Iwai
16f1f83844 Revert "ALSA: usb-audio: Drop superfluous interface setup at parsing"
This reverts commit ac5e2fb425.

The commit caused a regression on Behringer UMC404HD (and likely
others).  As the change was meant only as a minor optimization, it's
better to revert it to address the regression.

Reported-and-tested-by: Michael Ralston <michael@ralston.id.au>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/CAC2975JXkS1A5Tj9b02G_sy25ZWN-ys+tc9wmkoS=qPgKCogSg@mail.gmail.com
Link: https://lore.kernel.org/r/20230104150944.24918-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-01-04 16:10:19 +01:00
Takashi Iwai
37b3e56d89 ALSA: usb-audio: More refactoring of hw constraint rules
Although we applied a workaround for the hw constraints code with the
implicit feedback sync, it still has a potential problem.  Namely, as
the code treats only the first matching (sync) endpoint, it might be
too restrictive when multiple endpoints are listed in the substream's
format list.

This patch is another attempt to improve the hw constraint handling
for the implicit feedback sync.  The code is rewritten and the sync EP
handling for the rate and the format is put inside the fmt_list loop
in each hw_rule_*() function instead of the additional rules.  The
rules for the period size and periods are extended to loop over the
fmt_list like others, and they apply the constraints only if needed.

Link: https://lore.kernel.org/r/4e509aea-e563-e592-e652-ba44af6733fe@veniogames.com
Link: https://lore.kernel.org/r/20230102170759.29610-4-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-01-04 09:54:21 +01:00
Takashi Iwai
d463ac1acb ALSA: usb-audio: Relax hw constraints for implicit fb sync
The fix commit the commit e4ea77f8e5 ("ALSA: usb-audio: Always apply
the hw constraints for implicit fb sync") tried to address the bug
where an incorrect PCM parameter is chosen when two (implicit fb)
streams are set up at the same time.  This change had, however, some
side effect: once when the sync endpoint is chosen and set up, this
restriction is applied at the next hw params unless it's freed via hw
free explicitly.

This patch is a workaround for the problem by relaxing the hw
constraints a bit for the implicit fb sync.  We still keep applying
the hw constraints for implicit fb sync, but only when the matching
sync EP is being used by other streams.

Fixes: e4ea77f8e5 ("ALSA: usb-audio: Always apply the hw constraints for implicit fb sync")
Reported-by: Ruud van Asseldonk <ruud@veniogames.com>
Link: https://lore.kernel.org/r/4e509aea-e563-e592-e652-ba44af6733fe@veniogames.com
Link: https://lore.kernel.org/r/20230102170759.29610-3-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-01-04 09:53:54 +01:00
Takashi Iwai
0599313e26 ALSA: usb-audio: Make sure to stop endpoints before closing EPs
At the PCM hw params, we may re-configure the endpoints and it's done
by a temporary EP close followed by re-open.  A potential problem
there is that the EP might be already running internally at the PCM
prepare stage; it's seen typically in the playback stream with the
implicit feedback sync.  As this stream start isn't tracked by the
core PCM layer, we'd need to stop it explicitly, and that's the
missing piece.

This patch adds the stop_endpoints() call at snd_usb_hw_params() to
assure the stream stop before closing the EPs.

Fixes: bf6313a0ff ("ALSA: usb-audio: Refactor endpoint management")
Link: https://lore.kernel.org/r/4e509aea-e563-e592-e652-ba44af6733fe@veniogames.com
Link: https://lore.kernel.org/r/20230102170759.29610-2-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-01-04 09:53:21 +01:00
Artem Egorkine
b8800d324a ALSA: line6: fix stack overflow in line6_midi_transmit
Correctly calculate available space including the size of the chunk
buffer. This fixes a buffer overflow when multiple MIDI sysex
messages are sent to a PODxt device.

Signed-off-by: Artem Egorkine <arteme@gmail.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20221225105728.1153989-2-arteme@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-12-26 09:07:49 +01:00
Artem Egorkine
8508fa2e74 ALSA: line6: correct midi status byte when receiving data from podxt
A PODxt device sends 0xb2, 0xc2 or 0xf2 as a status byte for MIDI
messages over USB that should otherwise have a 0xb0, 0xc0 or 0xf0
status byte. This is usually corrected by the driver on other OSes.

This fixes MIDI sysex messages sent by PODxt.

[ tiwai: fixed white spaces ]

Signed-off-by: Artem Egorkine <arteme@gmail.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20221225105728.1153989-1-arteme@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-12-26 09:06:19 +01:00
Jaroslav Kysela
fd28941cff ALSA: usb-audio: Add new quirk FIXED_RATE for JBL Quantum810 Wireless
It seems that the firmware is broken and does not accept
the UAC_EP_CS_ATTR_SAMPLE_RATE URB. There is only one rate (48000Hz)
available in the descriptors for the output endpoint.

Create a new quirk QUIRK_FLAG_FIXED_RATE to skip the rate setup
when only one rate is available (fixed).

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=216798
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20221215153037.1163786-1-perex@perex.cz
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-12-22 09:13:54 +01:00