linux-toradex.git/sound/usb, branch master

ALSA: usb-audio: Add iface reset and delay quirk for AB13X USB Audio

2026-06-04T15:27:35+00:00

Setting up the interface when suspended/resumeing fail on this card.
Adding a reset and delay quirk will eliminate this problem.

usb 1-1: new full-speed USB device number 2 using xhci-hcd
usb 1-1: New USB device found, idVendor=3c20, idProduct=3d21
usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-1: Product: AB13X USB Audio
usb 1-1: Manufacturer: Generic
usb 1-1: SerialNumber: 20210726905926

Signed-off-by: Lianqin Hu 
Signed-off-by: Takashi Iwai 
Link: https://patch.msgid.link/TYUPR06MB62174610061C213260E1A992D2102@TYUPR06MB6217.apcprd06.prod.outlook.com

ALSA: usb-audio: Set the value of potential sticky mixers to maximum

2026-05-31T14:07:32+00:00

It makes no sense to restore the saved value for a sticky mixer, since
setting any value is a no-op.

However, in some rare cases, SET_CUR is effective despite GET_CUR always
returns a constant value. These mixers are not sticky, but there's no
way to distinguish them. Without any additional information, the best
thing we can do is to set the mixer value to the maximum before bailing
out, so that a soft mixer can still reach the maximum hardware volume if
the mixer turns out to be non-sticky. Meanwhile, all channels must be
synchronized to prevent imbalance volume.

Fixes: 86aa1ea1f15c ("ALSA: usb-audio: Do not expose sticky mixers")
Signed-off-by: Rong Zhang 
Link: https://patch.msgid.link/20260531-uac-sticky-error-path-v1-1-12c2329d17ef@rong.moe
Signed-off-by: Takashi Iwai

ALSA: usb-audio: Add iface reset and delay quirk for TAE1160 USB Audio

2026-05-27T05:24:15+00:00

Setting up the interface when suspended/resumeing fail on this card.
Adding a reset and delay quirk will eliminate this problem.

usb 1-1: new full-speed USB device number 2 using xhci-hcd
usb 1-1: New USB device found, idVendor=25aa, idProduct=600b
usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-1: Product: TAE1159
usb 1-1: Manufacturer: Generic
usb 1-1: SerialNumber: 20210726905926

Signed-off-by: Lianqin Hu 
Link: https://patch.msgid.link/TYUPR06MB621736D7C85D43200E54E740D2082@TYUPR06MB6217.apcprd06.prod.outlook.com
Signed-off-by: Takashi Iwai

ALSA: scarlett2: Fix 2i2 Gen 4 direct monitor gain on firmware 2417

2026-05-25T07:24:56+00:00

Firmware 2417 for the Scarlett 4th Gen 2i2 moved the direct monitor
gain parameter by 4 bytes, from offset 0x2a0 to 0x2a4, breaking the
"Direct Monitor X Mix Y" controls.

Special-case the offset in the get/set config helpers when the
running firmware is 2417 or later.

Fixes: 4e809a299677 ("ALSA: scarlett2: Add support for Solo, 2i2, and 4i4 Gen 4")
Cc: 
Signed-off-by: Geoffrey D. Bennett 
Link: https://patch.msgid.link/ahIWTueUlWA5xiV+@m.b4.vu
Signed-off-by: Takashi Iwai

ALSA: scarlett2: Allow flash writes ending at segment boundary

2026-05-20T05:51:46+00:00

scarlett2_hwdep_write() rejects writes when offset + count is greater than
or equal to the selected flash segment size. That incorrectly treats a
write ending exactly at the end of the segment as out of space, although
the last byte written is still within the segment.

Split invalid argument checks from the segment-space check, keep
zero-length writes as no-ops, and compare count against the remaining
segment size. This permits exact-end writes and avoids relying on
offset + count before deciding whether the request is in bounds.

Fixes: 1abfbd3c9527 ("ALSA: scarlett2: Add support for uploading new firmware")
Cc: stable@vger.kernel.org
Signed-off-by: Cássio Gabriel 
Link: https://patch.msgid.link/20260519-alsa-scarlett2-flash-write-boundary-v1-1-b550480e92da@gmail.com
Signed-off-by: Takashi Iwai

ALSA: ua101: Reject too-short USB descriptors

2026-05-19T06:08:41+00:00

find_format_descriptor() walks the class-specific interface extras by
advancing with bLength. It rejects descriptors that extend past the
remaining buffer, but it does not reject descriptor lengths smaller than
a USB descriptor header.

Reject too-short descriptors before using bLength to advance the local
scan. This keeps the UA-101 parser robust against malformed descriptor
data and matches the usual USB descriptor walking rules.

Fixes: 63978ab3e3e9 ("sound: add Edirol UA-101 support")
Cc: stable@vger.kernel.org
Signed-off-by: Cássio Gabriel 
Link: https://patch.msgid.link/20260519-alsa-ua101-desc-len-v1-1-4307d1a5e054@gmail.com
Signed-off-by: Takashi Iwai

ALSA: usb-audio: qcom: Check offload mapping failures

2026-05-15T06:51:46+00:00

uaudio_transfer_buffer_setup() calls dma_get_sgtable() and then passes
the sg_table to uaudio_iommu_map_xfer_buf() without checking whether sg
table construction succeeded. If dma_get_sgtable() fails, the sg_table
contents are not valid.

uaudio_iommu_map_pa() also ignores iommu_map() failures for the event and
transfer rings and still returns the allocated IOVA to the QMI response.
That can expose an unmapped IOVA to the audio DSP. For transfer rings,
the failed mapping also leaves the IOVA allocator state marked in use.

Check both operations. Free the coherent transfer buffer when sg table
construction fails, free the sg table when transfer-buffer IOMMU mapping
fails, and release the transfer-ring IOVA if iommu_map() fails. Also
return the existing event-ring IOVA when the event ring is already mapped,
matching the pre-split helper behavior.

Fixes: 326bbc348298 ("ALSA: usb-audio: qcom: Introduce QC USB SND offloading support")
Fixes: 44499ecb4f28 ("ALSA: usb: qcom: Fix false-positive address space check")
Cc: stable@vger.kernel.org
Signed-off-by: Cássio Gabriel 
Link: https://patch.msgid.link/20260511-alsa-usb-qcom-offload-map-errors-v1-1-6502695e58bc@gmail.com
Signed-off-by: Takashi Iwai

ALSA: usb-audio: Add iface reset and delay quirk for TTGK Technology USB-C Audio

2026-05-15T06:34:37+00:00

Setting up the interface when suspended/resumeing fail on this card.
Adding a reset and delay quirk will eliminate this problem.

usb 1-1: new full-speed USB device number 2 using xhci-hcd
usb 1-1: New USB device found, idVendor=3302, idProduct=17c2
usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-1: Product: USB-C Audio
usb 1-1: Manufacturer: TTGK Technology
usb 1-1: SerialNumber: 170120210706

Signed-off-by: Lianqin Hu 
Signed-off-by: Takashi Iwai 
Link: https://patch.msgid.link/TYUPR06MB621720E4E8F99A42E162FD51D23D2@TYUPR06MB6217.apcprd06.prod.outlook.com

ALSA: scarlett2: Add missing error check when initialise Autogain Status

2026-05-15T06:33:12+00:00

When initialise new control with scarlett2_add_new_ctl() function for
Autogain Status, scarlett2_add_new_ctl() might throw an error. So, add
error check after initialise new control for Autogain Status.

This is reported by Coverity Scan with CID 1598781 as UNUSED_VALUE.

Fixes: 0a995e38dc44 ("ALSA: scarlett2: Add support for software-controllable input gain")
Signed-off-by: Robertus Diawan Chris 
Link: https://patch.msgid.link/20260508033914.111596-1-robertusdchris@gmail.com
Signed-off-by: Takashi Iwai

ALSA: usb-audio: Bound MIDI 2.0 endpoint descriptor scans

2026-05-07T10:58:16+00:00

The USB MIDI 2.0 endpoint parser has the same descriptor walking
pattern as the legacy MIDI parser. It validates bLength against
bNumGrpTrmBlock before reading baAssoGrpTrmBlkID[], but not against the
remaining bytes in the endpoint-extra scan.

A malformed device can therefore make later baAssoGrpTrmBlkID[] reads
consume bytes past the walked descriptor.

Reject zero-length and overlong descriptors while walking endpoint
extras.

Fixes: ff49d1df79ae ("ALSA: usb-audio: USB MIDI 2.0 UMP support")
Cc: stable@vger.kernel.org
Signed-off-by: Cássio Gabriel 
Link: https://patch.msgid.link/20260507-usb-midi-endpoint-scan-bounds-v1-2-329d7348160e@gmail.com
Signed-off-by: Takashi Iwai