linux-kernel - [PATCH] ALSA: hda: Use maple tree register cache

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Date:   Sat, 10 Jun 2023 15:26:37 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        Mark Brown <broonie@...nel.org>
Subject: [PATCH] ALSA: hda: Use maple tree register cache

HDA can only support single register read and write operations so does not
benefit from block writes. This means it gets no benefit from using the
rbtree register cache over the maple tree register cache so convert it to
use maple trees instead, it is more modern.

Signed-off-by: Mark Brown <broonie@...nel.org>
---
 sound/hda/hdac_regmap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/hda/hdac_regmap.c b/sound/hda/hdac_regmap.c
index fe3587547cfe..2caa1f9b858e 100644
--- a/sound/hda/hdac_regmap.c
+++ b/sound/hda/hdac_regmap.c
@@ -358,7 +358,7 @@ static const struct regmap_config hda_regmap_cfg = {
 	.writeable_reg = hda_writeable_reg,
 	.readable_reg = hda_readable_reg,
 	.volatile_reg = hda_volatile_reg,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 	.reg_read = hda_reg_read,
 	.reg_write = hda_reg_write,
 	.use_single_read = true,

---
base-commit: 9561de3a55bed6bdd44a12820ba81ec416e705a7
change-id: 20230609-alsa-hda-maple-02f75ebb067e

Best regards,
-- 
Mark Brown <broonie@...nel.org>