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| author | Richard Fitzgerald <rf@opensource.cirrus.com> | 2023-07-31 17:57:26 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2023-08-01 08:30:09 +0200 |
| commit | 8ca3ee6f3f64673f377fc8f5ed163f71181c85ad (patch) | |
| tree | ed409139289b3bdc161c8c98ce37c093d71dd8ff /sound/pci/hda | |
| parent | 3106797d2b0b09e7a27f09fac329f1d6e9b35270 (diff) | |
| download | linux-stable-8ca3ee6f3f64673f377fc8f5ed163f71181c85ad.tar.gz linux-stable-8ca3ee6f3f64673f377fc8f5ed163f71181c85ad.tar.bz2 linux-stable-8ca3ee6f3f64673f377fc8f5ed163f71181c85ad.zip | |
ALSA: hda/cs35l56: Reject I2C alias addresses
The ACPI nodes for CS35L56 can contain an extra I2CSerialBusV2 that
is not a real device, it is an alias address.
This alias address will not be in the cirrus,dev-index array, so reject
any instantions with a device address not found in the array.
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230731165726.7940-10-rf@opensource.cirrus.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda')
| -rw-r--r-- | sound/pci/hda/cs35l56_hda.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/sound/pci/hda/cs35l56_hda.c b/sound/pci/hda/cs35l56_hda.c index 004740509dbd..76b9c685560b 100644 --- a/sound/pci/hda/cs35l56_hda.c +++ b/sound/pci/hda/cs35l56_hda.c @@ -852,8 +852,12 @@ static int cs35l56_hda_read_acpi(struct cs35l56_hda *cs35l56, int id) break; } } + /* + * It's not an error for the ID to be missing: for I2C there can be + * an alias address that is not a real device. So reject silently. + */ if (cs35l56->index == -1) { - dev_err(cs35l56->base.dev, "No index found in %s\n", property); + dev_dbg(cs35l56->base.dev, "No index found in %s\n", property); ret = -ENODEV; goto err; } @@ -891,7 +895,8 @@ static int cs35l56_hda_read_acpi(struct cs35l56_hda *cs35l56, int id) return 0; err: - dev_err(cs35l56->base.dev, "Failed property %s: %d\n", property, ret); + if (ret != -ENODEV) + dev_err(cs35l56->base.dev, "Failed property %s: %d\n", property, ret); return ret; } @@ -904,10 +909,8 @@ int cs35l56_hda_common_probe(struct cs35l56_hda *cs35l56, int id) dev_set_drvdata(cs35l56->base.dev, cs35l56); ret = cs35l56_hda_read_acpi(cs35l56, id); - if (ret) { - dev_err_probe(cs35l56->base.dev, ret, "Platform not supported\n"); + if (ret) goto err; - } cs35l56->amp_name = devm_kasprintf(cs35l56->base.dev, GFP_KERNEL, "AMP%d", cs35l56->index + 1); |