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| author | sheetal <sheetal@nvidia.com> | 2025-12-08 08:20:40 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2025-12-14 13:32:37 +0300 |
| commit | 4d4021b0bbd1fad7c72b9155863f5b3ccb43ae91 (patch) | |
| tree | aa61b1963026619b67a309dc3f8caa0f5e8439b5 | |
| parent | 8f0b4cce4481fb22653697cced8d0d04027cb1e8 (diff) | |
| download | linux-4d4021b0bbd1fad7c72b9155863f5b3ccb43ae91.tar.xz | |
ASoC: tegra: Fix uninitialized flat cache warning in tegra210_ahub
The tegra210_ahub driver started triggering a warning after commit
e062bdfdd6ad ("regmap: warn users about uninitialized flat cache"),
which flags drivers using REGCACHE_FLAT without register defaults.
Since the driver omits default definitions because its registers are
zero initialized, the following warning is shown:
WARNING KERN tegra210-ahub 2900800.ahub: using zero-initialized flat cache, this may cause unexpected behavior
Switch to REGCACHE_FLAT_S which is the recommended cache type for
sparse register maps without defaults. This cache type initializes
entries on-demand from hardware, eliminating the warning while using
memory efficiently.
Signed-off-by: sheetal <sheetal@nvidia.com>
Link: https://patch.msgid.link/20251208052040.4025612-1-sheetal@nvidia.com
Signed-off-by: Mark Brown <broonie@kernel.org>
| -rw-r--r-- | sound/soc/tegra/tegra210_ahub.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/sound/soc/tegra/tegra210_ahub.c b/sound/soc/tegra/tegra210_ahub.c index e795907a3963..261d9067d27b 100644 --- a/sound/soc/tegra/tegra210_ahub.c +++ b/sound/soc/tegra/tegra210_ahub.c @@ -2077,7 +2077,7 @@ static const struct regmap_config tegra210_ahub_regmap_config = { .val_bits = 32, .reg_stride = 4, .max_register = TEGRA210_MAX_REGISTER_ADDR, - .cache_type = REGCACHE_FLAT, + .cache_type = REGCACHE_FLAT_S, }; static const struct regmap_config tegra186_ahub_regmap_config = { @@ -2085,7 +2085,7 @@ static const struct regmap_config tegra186_ahub_regmap_config = { .val_bits = 32, .reg_stride = 4, .max_register = TEGRA186_MAX_REGISTER_ADDR, - .cache_type = REGCACHE_FLAT, + .cache_type = REGCACHE_FLAT_S, }; static const struct regmap_config tegra264_ahub_regmap_config = { @@ -2094,7 +2094,7 @@ static const struct regmap_config tegra264_ahub_regmap_config = { .reg_stride = 4, .writeable_reg = tegra264_ahub_wr_reg, .max_register = TEGRA264_MAX_REGISTER_ADDR, - .cache_type = REGCACHE_FLAT, + .cache_type = REGCACHE_FLAT_S, }; static const struct tegra_ahub_soc_data soc_data_tegra210 = { |