kernel/linux.git/sound/drivers, branch v6.6.141

ALSA: pcmtest: Fix resource leaks in module init error paths

2026-05-17T15:13:29+00:00

commit d5d5f80416a3a749906c04d56575e2290792654b upstream. pcmtest allocates its pattern buffers and creates its debugfs tree before registering the platform device and driver, but mod_init() does not release those resources when a later init step fails. As a result, a debugfs directory creation failure leaks the pattern buffers, while platform_device_register() and platform_driver_register() failures leave both the pattern buffers and the debugfs tree behind. The recent fix for failed device registration only dropped the embedded device reference. Add the missing cleanup for the debugfs tree and pattern buffers in the remaining module init error paths. Fixes: 315a3d57c64c ("ALSA: Implement the new Virtual PCM Test Driver") Cc: stable@vger.kernel.org Signed-off-by: Cássio Gabriel Link: https://patch.msgid.link/20260421-alsa-pcmtest-init-unwind-v1-1-03fe0c423dbb@gmail.com Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman

ALSA: pcmtest: fix reference leak on failed device registration

2026-05-17T15:13:29+00:00

commit 4ff036f95238f02c87e5d7c0a9d93748582a8950 upstream. When platform_device_register() fails in mod_init(), the embedded struct device in pcmtst_pdev has already been initialized by device_initialize(), but the failure path returns the error without dropping the device reference for the current platform device: mod_init() -> platform_device_register(&pcmtst_pdev) -> device_initialize(&pcmtst_pdev.dev) -> setup_pdev_dma_masks(&pcmtst_pdev) -> platform_device_add(&pcmtst_pdev) This leads to a reference leak when platform_device_register() fails. Fix this by calling platform_device_put() before returning the error. The issue was identified by a static analysis tool I developed and confirmed by manual review. Fixes: 315a3d57c64c5 ("ALSA: Implement the new Virtual PCM Test Driver") Cc: stable@vger.kernel.org Signed-off-by: Guangshuo Li Link: https://patch.msgid.link/20260415193138.3861297-1-lgs201920130244@gmail.com Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman

ALSA: serial-generic: remove shared static buffer

2025-11-24T09:29:38+00:00

[ Upstream commit 84973249011fda3ff292f83439a062fec81ef982 ] If multiple instances of this driver are instantiated and try to send concurrently then the single static buffer snd_serial_generic_tx_work() will cause corruption in the data output. Move the buffer into the per-instance driver data to avoid this. Signed-off-by: John Keeping Signed-off-by: Takashi Iwai Signed-off-by: Sasha Levin

ALSA: pcmtest: stop timer before buffer is released

2024-01-20T10:51:42+00:00

[ Upstream commit eb99b1b72a424a79f56c972e0fd7ad01fe93a008 ] Stop timer in the 'trigger' and 'sync_stop' callbacks since we want the timer to be stopped before the DMA buffer is released. Otherwise, it could trigger a kernel panic in some circumstances, for instance when the DMA buffer is already released but the timer callback is still running. Signed-off-by: Ivan Orlov Link: https://lore.kernel.org/r/20231206223211.12761-1-ivan.orlov0322@gmail.com Signed-off-by: Takashi Iwai Signed-off-by: Sasha Levin

Merge tag 'asoc-v6.6' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

2023-08-28T14:13:03+00:00

ASoC: Updates for v6.6 The rest of the updates for v6.6, some of the highlights include: - A big API cleanup from Morimoto-san, rationalising the places we put functions. - Lots of work on the SOF framework, AMD and Intel drivers, including a lot of cleanup and new device support. - Standardisation of the presentation of jacks from drivers. - Provision of some generic sound card DT properties. - Conversion oof more drivers to the maple tree register cache. - New drivers for AMD Van Gogh, AWInic AW88261, Cirrus Logic cs42l43, various Intel platforms, Mediatek MT7986, RealTek RT1017 and StarFive JH7110.

ALSA: pcmtest: Add support for pcm pausing

2023-08-24T07:58:22+00:00

Add pause push/release support to the virtual PCM test driver. Add 'suspend' boolean field to the pcmtst_buf_iter structure, so we can pause the timer without shutting it down. Update the trigger callback handler correspondingly. Extract buffer initialization to the 'reset_buf_iterator' function since it is used in multiple places now. Signed-off-by: Ivan Orlov Link: https://lore.kernel.org/r/20230822150541.8450-1-ivan.orlov0322@gmail.com Signed-off-by: Takashi Iwai

ALSA: pcmtest: Update comment about PCM copy ops

2023-08-18T10:18:26+00:00

Just an update of a comment mentioning the old PCM callbacks to correct to the new PCM copy ops. Link: https://lore.kernel.org/r/20230815190136.8987-17-tiwai@suse.de Signed-off-by: Takashi Iwai

ALSA: dummy: Convert to generic PCM copy ops

2023-08-18T10:18:17+00:00

This patch converts the dummy driver code to use the new unified PCM copy callback. As dummy driver doesn't do anything in the callback, it's just a simple replacement. Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20230815190136.8987-5-tiwai@suse.de Signed-off-by: Takashi Iwai

ALSA: Make SND_PCMTEST depend on DEBUG_FS

2023-08-18T07:10:22+00:00

Since pcmtest is a test module that manipulates or gets notification via debugfs, without DEBUG_FS it can not work fine. So make SND_PCMTEST depend on DEBUG_FS. Signed-off-by: Ruan Jinjie Acked-by: Ivan Orlov Link: https://lore.kernel.org/r/20230817093740.1732738-1-ruanjinjie@huawei.com Signed-off-by: Takashi Iwai

ALSA: Remove redundant of_match_ptr()

2023-08-13T18:37:47+00:00

The driver depends on CONFIG_OF, it is not necessary to use of_match_ptr() here. Signed-off-by: Ruan Jinjie