[PATCH v2 0/2] ASoC: meson: gx-formatter: change stream lock from mutex to spinlock

[Valerio Setti <vsetti@baylibre.com>]

Patch 1 fixes a pre-existing bugs, present since v7.3, reported by
Sashiko [1] while reviewing the series adding I2S input support for
Amlogic GX SoCs [2].
[2] depends on patch 1 to address Sashiko's comment.

Patch 2 adds a hardening check suggested by Martin while reviewing v1.

[1] https://lore.kernel.org/all/sashiko-outbox-176054@kernel.org/
[2] https://lore.kernel.org/all/20261018-audin-v5-0-4b8cc13a1b22@baylibre.com/

Signed-off-by: Valerio Setti <vsetti@baylibre.com>
---
Changes in v2:
- Moved 'gx_formatter_disable()' under the spinlock guard in
  'gx_formatter_detach'. [Martin]
- Added a new commit to introduce the 'lockdep_assert_held' check before
  calling formatter's prepare/enable/disable callbacks. [Martin]
- Link to v1: https://patch.msgid.link/20261021-gx-formatter-use-spinlock-v1-1-71ebc9224c03@baylibre.com

To: Jerome Brunet <jbrunet@baylibre.com>
To: Liam Girdwood <lgirdwood@gmail.com>
To: Mark Brown <broonie@kernel.org>
To: Jaroslav Kysela <perex@perex.cz>
To: Takashi Iwai <tiwai@suse.com>
To: Neil Armstrong <neil.armstrong@linaro.org>
To: Kevin Hilman <khilman@baylibre.com>
To: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
To: Valerio Setti <vsetti@baylibre.com>
Cc: linux-sound@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-kernel@vger.kernel.org

---
Valerio Setti (2):
      ASoC: meson: gx-formatter: change stream lock from mutex to spinlock
      ASoC: meson: gx-formatter: add lockdep_assert_held check

 sound/soc/meson/gx-formatter.c | 26 +++++++++++++++-----------
 sound/soc/meson/gx-formatter.h |  4 ++++
 sound/soc/meson/gx-interface.h |  3 ++-
 3 files changed, 21 insertions(+), 12 deletions(-)
---
base-commit: c03c1a14507dfaf8b856c2608f9ac216021fc222
change-id: 20261021-gx-formatter-use-spinlock-289b3e2e46df

Best regards,
--  
Valerio Setti <vsetti@baylibre.com>


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