kernel/linux.git/sound/hda/common/sysfs.c, branch linux-7.0.y

ALSA: hda: Relax __free() variable declarations

2025-12-17T09:08:30+00:00

We used to have a variable declaration with __free() initialized with NULL. This was to keep the old coding style rule, but recently it's relaxed and rather recommends to follow the new rule to declare in place of use for __free() -- which avoids potential deadlocks or UAFs with nested cleanups. Although the current code has no bug, per se, let's follow the new standard and move the declaration to the place of assignment (or directly assign the allocated result) instead of NULL initializations. Fixes: ee0b0f5d32fe ("ALSA: hda/generic: Use auto cleanup for temporary buffers") Fixes: 03c5c350e38d ("ALSA: hda/realtek: Add support for new HP G12 laptops") Fixes: b0550d4c2dd8 ("ALSA: hda/common: Use auto cleanup for temporary buffers") Signed-off-by: Takashi Iwai Link: https://patch.msgid.link/20251216140634.171890-10-tiwai@suse.de

ALSA: hda/common: Use auto cleanup for temporary buffers

2025-08-29T09:52:15+00:00

The release of temporary kmalloced buffers can be nicely handled via the standard __free(kfree). Only code refactoring, and no behavior change. Signed-off-by: Takashi Iwai Link: https://patch.msgid.link/20250827072916.31933-20-tiwai@suse.de

ALSA: hda/common: Use guard() for mutex locks

2025-08-29T09:52:14+00:00

Replace the manual mutex lock/unlock pairs with guard(). Only code refactoring, and no behavior change. Signed-off-by: Takashi Iwai Link: https://patch.msgid.link/20250827072916.31933-8-tiwai@suse.de

ALSA: hda/common: Use cleanup macros for PM controls

2025-08-29T09:52:14+00:00

The new macro CLASS(snd_hda_power_pm) can replace the manual snd_hda_power_up_pm() and _down() calls gracefully. A part of the code in codec_exec_verb() is factored out to a function, so that the auto-cleanup can be well scoped. Merely cleanups and no functional changes. Signed-off-by: Takashi Iwai Link: https://patch.msgid.link/20250827072916.31933-6-tiwai@suse.de

ALSA: hda: Move common codec driver into sound/hda/common directory

2025-07-11T07:55:37+00:00

The snd-hda-codec module contains the most of common code used by both HD-audio controller and codec drivers, and it's basically independent from PCI. Let's move the code to sound/hda/common directory as a part of code reorganization. The hda_ prefix is dropped from the most of file names as it's rather superfluous. Signed-off-by: Takashi Iwai Link: https://patch.msgid.link/20250709160434.1859-4-tiwai@suse.de