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linux-stable/sound/core
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Takashi Iwai b2bcbd031d ALSA: ump: Don't create unused substreams for static blocks 
When the UMP Endpoint is declared as "static", that is, no dynamic
reassignment of UMP Groups, it makes little sense to expose always all
16 groups with 16 substreams.  Many of those substreams are disabled
groups, hence they are useless, but applications don't know it and try
to open / access all those substreams unnecessarily.

This patch limits the number of UMP legacy rawmidi substreams only to
the active groups.  The behavior is changed only for the static
endpoint (i.e. devices without UMP v1.1 feature implemented or with
the static block flag is set).

Fixes: 0b5288f5fe ("ALSA: ump: Add legacy raw MIDI support")
Link: https://lore.kernel.org/r/20230824075108.29958-4-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-08-24 10:03:17 +02:00
..
oss ALSA: control: Introduce unlocked version for snd_ctl_find_*() helpers 2023-07-20 10:03:00 +02:00
seq Merge branch 'for-linus' into for-next 2023-08-24 09:27:21 +02:00
compress_offload.c ALSA: compress: Don't embed device 2023-08-17 09:24:15 +02:00
control.c ALSA: control: Don't embed ctl_dev 2023-08-17 09:23:30 +02:00
control_compat.c ALSA: control: Introduce unlocked version for snd_ctl_find_*() helpers 2023-07-20 10:03:00 +02:00
control_led.c ALSA: control: Don't embed ctl_dev 2023-08-17 09:23:30 +02:00
ctljack.c ALSA: Convert strlcpy to strscpy when return value is unused 2021-01-08 09:30:05 +01:00
device.c ALSA: core: Fix missing return value comments for kernel docs 2022-07-13 13:42:38 +02:00
hrtimer.c ALSA: timer: Replace tasklet with work 2020-09-09 18:32:52 +02:00
hwdep.c ALSA: hwdep: Don't embed device 2023-08-17 09:24:01 +02:00
hwdep_compat.c ALSA: compat_ioctl: avoid compat_alloc_user_space 2020-09-21 10:37:07 +02:00
info.c ALSA: info: Fix llseek return value when using callback 2022-08-17 15:13:30 +02:00
info_oss.c ALSA: oss: remove useless NULL check before kfree 2021-12-06 10:08:13 +01:00
init.c ALSA: core: Drop snd_device_initialize() 2023-08-17 09:24:33 +02:00
isadma.c sound updates for 6.0-rc1 2022-08-06 10:19:51 -07:00
jack.c ALSA: control: Take controls_rwsem lock in snd_ctl_remove() 2023-07-20 10:01:27 +02:00
Kconfig ALSA: ump: Add legacy raw MIDI support 2023-05-23 12:11:09 +02:00
Makefile ALSA: ump: Add legacy raw MIDI support 2023-05-23 12:11:09 +02:00
memalloc.c ALSA: memalloc: Workaround for Xen PV 2023-01-27 09:16:24 +01:00
memalloc_local.h ALSA: memalloc: remove snd_dma_sg_ops declaration 2022-09-09 09:09:40 +02:00
memory.c ALSA: core: Add memory copy helpers between iov_iter and iomem 2023-08-18 12:18:16 +02:00
misc.c ALSA: core: Add async signal helpers 2022-07-29 12:57:10 +02:00
pcm.c ALSA: pcm: Don't embed device 2023-08-17 09:23:45 +02:00
pcm_compat.c ALSA: pcm: Avoid reference to status->state 2022-09-27 08:44:05 +02:00
pcm_dmaengine.c ALSA: dmaengine: increment buffer pointer atomically 2022-09-27 08:55:05 +02:00
pcm_drm_eld.c ALSA: pcm: fix ELD constraints for (E)AC3, DTS(-HD) and MLP formats 2023-06-25 08:42:53 +02:00
pcm_iec958.c ALSA: iec958: Split status creation and fill 2021-06-08 17:05:41 +02:00
pcm_lib.c ALSA: pcm: Drop obsoleted PCM copy_user and copy_kernel ops 2023-08-18 12:19:19 +02:00
pcm_local.h ALSA: pcm: Revert "ALSA: pcm: rewrite snd_pcm_playback_silence()" 2023-05-05 18:23:48 +02:00
pcm_memory.c ALSA: pcm: Fix potential data race at PCM memory allocation helpers 2023-07-03 14:52:27 +02:00
pcm_misc.c ALSA: pcm: Test for "silence" field in struct "pcm_format_data" 2022-04-11 09:27:56 +02:00
pcm_native.c ALSA: pcm: Drop obsoleted PCM copy_user and copy_kernel ops 2023-08-18 12:19:19 +02:00
pcm_param_trace.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pcm_timer.c ALSA: timer: Constify snd_timer_hardware definitions 2020-01-03 09:24:07 +01:00
pcm_trace.h ALSA: pcm: fix tracing reason in hw_ptr_error 2022-11-28 14:55:41 +01:00
rawmidi.c ALSA: rawmidi: Don't embed device 2023-08-17 09:24:08 +02:00
rawmidi_compat.c ALSA: rawmidi: UMP support 2023-05-23 12:10:54 +02:00
seq_device.c ALSA: seq: Fix a potential UAF by wrong private_free call order 2021-09-30 14:13:22 +02:00
sound.c ALSA: core: Fix assignment in if condition 2021-06-09 17:30:22 +02:00
sound_oss.c ALSA: oss: Fix potential deadlock at unregistration 2022-10-11 09:02:43 +02:00
timer.c ALSA: timer: Create device with snd_device_alloc() 2023-08-17 09:24:21 +02:00
timer_compat.c ALSA: Convert strlcpy to strscpy when return value is unused 2021-01-08 09:30:05 +01:00
ump.c ALSA: ump: Don't create unused substreams for static blocks 2023-08-24 10:03:17 +02:00
ump_convert.c ALSA: ump: Correct wrong byte size at converting a UMP System message 2023-06-28 11:44:30 +02:00
vmaster.c ALSA: vmaster: Add snd_ctl_add_followers() helper 2023-07-21 09:37:47 +02:00