6.6-stable review patch. If anyone has any objections, please let me know.
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From: Jerome Brunet jbrunet@baylibre.com
[ Upstream commit 6db26f9ea4edd8a17d39ab3c20111e3ccd704aef ]
Amlogic sound cards do create a lot of pcm interfaces, possibly more than 8. Some pcm interfaces are internal (like DPCM backends and c2c) and not exposed to userspace.
Those interfaces still increase the number passed to snd_find_free_minor(), which eventually exceeds 8 causing -EBUSY error on card registration if CONFIG_SND_DYNAMIC_MINORS=n and the interface is exposed to userspace.
select CONFIG_SND_DYNAMIC_MINORS for Amlogic cards to avoid the problem.
Fixes: 7864a79f37b5 ("ASoC: meson: add axg sound card support") Signed-off-by: Jerome Brunet jbrunet@baylibre.com Link: https://lore.kernel.org/r/20240426134150.3053741-1-jbrunet@baylibre.com Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- sound/soc/meson/Kconfig | 1 + 1 file changed, 1 insertion(+)
diff --git a/sound/soc/meson/Kconfig b/sound/soc/meson/Kconfig index b93ea33739f29..6458d5dc4902f 100644 --- a/sound/soc/meson/Kconfig +++ b/sound/soc/meson/Kconfig @@ -99,6 +99,7 @@ config SND_MESON_AXG_PDM
config SND_MESON_CARD_UTILS tristate + select SND_DYNAMIC_MINORS
config SND_MESON_CODEC_GLUE tristate