mirror-linux/include
Jaroslav Kysela 85df6b5a66 ALSA: pcm: clarify and fix default msbits value for all formats
Return used most significant bits from sample bit-width rather than the whole
physical sample word size. The starting bit offset is defined in the format
itself.

The behaviour is not changed for 32-bit formats like S32_LE. But with this
change - msbits value 24 instead 32 is returned for 24-bit formats like S24_LE
etc.

Also, commit 2112aa0349 ("ALSA: pcm: Introduce MSBITS subformat interface")
compares sample bit-width not physical sample bit-width to reset MSBITS_MAX bit
from the subformat bitmask.

Probably no applications are using msbits value for other than S32_LE/U32_LE
formats, because no drivers are reducing msbits value for other formats (with
the msb offset) at the moment.

For sanity, increase PCM protocol version, letting the user space to detect
the changed behaviour.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20240222173649.1447549-1-perex@perex.cz
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2024-02-23 09:44:46 +01:00
..
acpi IOMMU Updates for Linux v6.8 2024-01-18 15:16:57 -08:00
asm-generic RISC-V Patches for the 6.8 Merge Window, Part 4 2024-01-20 11:06:04 -08:00
clocksource
crypto
drm
dt-bindings dmaengine fixes for v6.8-rc1 2024-01-20 15:03:25 -08:00
keys
kunit
kvm
linux - Make sure 32-bit syscall registers are properly sign-extended 2024-01-28 09:45:11 -08:00
math-emu
media
memory
misc
net bpf-for-netdev 2024-01-25 11:30:31 +01:00
pcmcia
ras
rdma
rv
scsi
soc - New Device Support 2024-01-17 15:21:21 -08:00
sound ASoC: tas2781: add module parameter to tascodec_init() 2024-02-05 14:31:37 +00:00
target
trace afs: Fix error handling with lookup via FS.InlineBulkStatus 2024-01-22 22:30:14 +00:00
uapi ALSA: pcm: clarify and fix default msbits value for all formats 2024-02-23 09:44:46 +01:00
ufs
vdso
video
xen