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| author | Jerome Brunet <jbrunet@baylibre.com> | 2020-04-20 13:45:11 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-04-20 14:58:22 +0200 |
| commit | de911b4e683f9c28a063bb62991f2db206c38ba4 (patch) | |
| tree | bce134cabd6a2a78b41c3b956a91d7f4bccfa0e4 /sound/soc | |
| parent | ASoC: meson: axg-card: fix codec-to-codec link setup (diff) | |
| download | linux-de911b4e683f9c28a063bb62991f2db206c38ba4.tar.xz linux-de911b4e683f9c28a063bb62991f2db206c38ba4.zip | |
ASoC: meson: gx-card: fix codec-to-codec link setup
Since the addition of commit 9b5db059366a ("ASoC: soc-pcm: dpcm: Only allow
playback/capture if supported"), meson-axg cards which have codec-to-codec
links fail to init and Oops.
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000128
Internal error: Oops: 96000044 [#1] PREEMPT SMP
CPU: 3 PID: 1582 Comm: arecord Not tainted 5.7.0-rc1
pc : invalidate_paths_ep+0x30/0xe0
lr : snd_soc_dapm_dai_get_connected_widgets+0x170/0x1a8
Call trace:
invalidate_paths_ep+0x30/0xe0
snd_soc_dapm_dai_get_connected_widgets+0x170/0x1a8
dpcm_path_get+0x38/0xd0
dpcm_fe_dai_open+0x70/0x920
snd_pcm_open_substream+0x564/0x840
snd_pcm_open+0xfc/0x228
snd_pcm_capture_open+0x4c/0x78
snd_open+0xac/0x1a8
...
While this error was initially reported the axg-card type, it also applies
to the gx-card type.
While initiliazing the links, ASoC treats the codec-to-codec links of this
card type as a DPCM backend. This error eventually leads to the Oops.
Most of the card driver code is shared between DPCM backends and
codec-to-codec links. The property "no_pcm" marking DCPM BE was left set on
codec-to-codec links, leading to this problem. This commit fixes that.
Fixes: e37a0c313a0f ("ASoC: meson: gx: add sound card support")
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lore.kernel.org/r/20200420114511.450560-3-jbrunet@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc')
| -rw-r--r-- | sound/soc/meson/gx-card.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sound/soc/meson/gx-card.c b/sound/soc/meson/gx-card.c index 7b01dcb73e5e..4abf7efb7eac 100644 --- a/sound/soc/meson/gx-card.c +++ b/sound/soc/meson/gx-card.c @@ -108,8 +108,10 @@ static int gx_card_add_link(struct snd_soc_card *card, struct device_node *np, ret = gx_card_parse_i2s(card, np, index); /* Or apply codec to codec params if necessary */ - else if (gx_card_cpu_identify(dai_link->cpus, "CODEC CTRL")) + else if (gx_card_cpu_identify(dai_link->cpus, "CODEC CTRL")) { dai_link->params = &codec_params; + dai_link->no_pcm = 0; /* link is not a DPCM BE */ + } return ret; } |