linux/include/uapi
Takashi Iwai 87c3262b00 ALSA: usb-audio: Fix parse of UAC2 Extension Units
commit ca95c7bf3d upstream.

Extension Unit (XU) is used to have a compatible layout with
Processing Unit (PU) on UAC1, and the usb-audio driver code assumed it
for parsing the descriptors.  Meanwhile, on UAC2, XU became slightly
incompatible with PU; namely, XU has a one-byte bmControls bitmap
while PU has two bytes bmControls bitmap.  This incompatibility
results in the read of a wrong address for the last iExtension field,
which ended up with an incorrect string for the mixer element name, as
recently reported for Focusrite Scarlett 18i20 device.

This patch corrects this misalignment by introducing a couple of new
macros and calling them depending on the descriptor type.

Fixes: 23caaf19b1 ("ALSA: usb-mixer: Add support for Audio Class v2.0")
Reported-by: Stefan Sauer <ensonic@hora-obscura.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-14 08:11:16 +02:00
..
asm-generic mm/hugetlb: add mmap() encodings for 32MB and 512MB page sizes 2018-10-05 16:32:04 -07:00
drm drm/i915: Fix I915_EXEC_RING_MASK 2019-06-11 12:20:56 +02:00
linux ALSA: usb-audio: Fix parse of UAC2 Extension Units 2019-07-14 08:11:16 +02:00
misc ocxl: Add an IOCTL so userspace knows what OCXL features are available 2018-06-03 20:40:32 +10:00
mtd ubi: expose the volume CRC check skip flag 2018-08-15 00:25:21 +02:00
rdma RDMA/vmw_pvrdma: Return the correct opcode when creating WR 2019-01-22 21:40:34 +01:00
scsi
sound ASoC: uapi: fix sound/skl-tplg-interface.h userspace compilation errors 2018-08-14 15:08:07 +01:00
video
xen xen/gntdev: Add initial support for dma-buf UAPI 2018-07-26 23:05:14 -04:00