kernel/linux.git/sound/isa/msnd, branch linux-7.1.y

ALSA: msnd: add ISA and PnP system sleep callbacks

2026-04-09T10:02:39+00:00

The msnd drivers do not implement system sleep callbacks today, so they have no defined way to recover DSP state after suspend. Add common card suspend/resume helpers, rerun the DSP initialization path on resume, restore the cached capture-source state, and rearm the shared IRQ for already-open users. Signed-off-by: Cássio Gabriel Link: https://patch.msgid.link/20260409-msnd-pm-support-v1-2-2abef720d0e7@gmail.com Signed-off-by: Takashi Iwai

ALSA: msnd: prepare system sleep support

2026-04-09T10:02:31+00:00

System suspend cannot work for msnd today because the PCM trigger paths reject SNDRV_PCM_TRIGGER_SUSPEND, and the driver has only refcounted IRQ helpers. Add the small helpers needed by the PM callbacks and restore master volume from the cached ALSA mixer state when the DSP is reinitialized. Signed-off-by: Cássio Gabriel Link: https://patch.msgid.link/20260409-msnd-pm-support-v1-1-2abef720d0e7@gmail.com Signed-off-by: Takashi Iwai

ALSA: isa: Add SPDX id lines to some files

2026-02-18T07:56:47+00:00

Add SPDX-License-Identifier lines to several files where they are missing, mostly in the sound/isa subdir. Use GPL-2.0 as the id. [ note: the same change applied to sound/hda/core/trace.c, too -- tiwai ] Signed-off-by: Tim Bird Link: https://patch.msgid.link/20260212195905.3726149-1-tim.bird@sony.com Signed-off-by: Takashi Iwai

ALSA: msnd: Use guard() for spin locks

2025-09-01T11:53:02+00:00

Clean up the code using guard() for spin locks. Merely code refactoring, and no behavior change. Signed-off-by: Takashi Iwai Link: https://patch.msgid.link/20250829145300.5460-10-tiwai@suse.de

ALSA: msnd: Use safer strscpy() instead of strcpy()

2025-07-11T07:53:15+00:00

Use a safer function strscpy() instead of strcpy() for copying to arrays. Only idiomatic code replacement, and no functional changes. Signed-off-by: Takashi Iwai Link: https://patch.msgid.link/20250710100727.22653-33-tiwai@suse.de

ALSA: msnd: Remove midi code

2025-05-12T07:55:09+00:00

Nothing calls snd_msndmidi_new() thus nothing sets chip->msndmidi_mpu The call to snd_msndmidi_input_read is gated on that being set, so snd_msndmidi_input_read() won't be called either. This is probably a missing call to snd_msndmidi_new(), but since this is ancient code, it's probably best to remove it (especially since I don't have the hardware to test it). Signed-off-by: Dr. David Alan Gilbert Link: https://patch.msgid.link/20250511172957.1001583-1-linux@treblig.org Signed-off-by: Takashi Iwai

ALSA: msnd: Use standard print API

2024-08-08T05:49:41+00:00

Use the standard print API with dev_*() instead of the old house-baked one. It gives better information and allows dynamically control of debug prints. Reviewed-by: Jaroslav Kysela Signed-off-by: Takashi Iwai Link: https://patch.msgid.link/20240807133452.9424-28-tiwai@suse.de

ALSA: isa: Use -y instead of -objs in Makefile

2024-05-08T16:17:48+00:00

*-objs suffix is reserved rather for (user-space) host programs while usually *-y suffix is used for kernel drivers (although *-objs works for that purpose for now). Let's correct the old usages of *-objs in Makefiles. Signed-off-by: Takashi Iwai Reviewed-by: Andy Shevchenko Reviewed-by: Jaroslav Kysela Link: https://lore.kernel.org/r/20240507135513.14919-5-tiwai@suse.de

ALSA: msnd: Use proper mmap method

2021-08-09T14:06:17+00:00

The old ISA MSND driver basically maps the iomem as the DMA buffer. For this type of buffer, we have already the standard mmap helper, snd_pcm_lib_mmap_iomem(). Correct the PCM info, set the DMA address and use the standard helper for handling the mmap on all architectures properly. Link: https://lore.kernel.org/r/20210809140532.11006-1-tiwai@suse.de Signed-off-by: Takashi Iwai

ALSA: msnd: Allocate resources with device-managed APIs

2021-07-19T14:17:24+00:00

This patch converts the resource management in ISA msnd drivers with devres as a clean up. Each manual resource management is converted with the corresponding devres helper. The remove callback became superfluous and dropped. This should give no user-visible functional changes. Link: https://lore.kernel.org/r/20210715075941.23332-67-tiwai@suse.de Signed-off-by: Takashi Iwai