Fix classic issue of having multiple codecs listed in DSDT but a single one actually enabled. The previous code did not handle such errors and could also lead to uninitalized configurations
Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com --- sound/soc/intel/boards/cht_bsw_rt5645.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/sound/soc/intel/boards/cht_bsw_rt5645.c b/sound/soc/intel/boards/cht_bsw_rt5645.c index d208a48..ca1222c 100644 --- a/sound/soc/intel/boards/cht_bsw_rt5645.c +++ b/sound/soc/intel/boards/cht_bsw_rt5645.c @@ -408,22 +408,32 @@ static int snd_cht_mc_probe(struct platform_device *pdev) struct sst_acpi_mach *mach; const char *i2c_name = NULL; int dai_index = 0; + bool found = false;
drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_ATOMIC); if (!drv) return -ENOMEM;
+ mach = (&pdev->dev)->platform_data; + for (i = 0; i < ARRAY_SIZE(snd_soc_cards); i++) { - if (acpi_dev_found(snd_soc_cards[i].codec_id)) { + if (acpi_dev_found(snd_soc_cards[i].codec_id) && + (!strncmp(snd_soc_cards[i].codec_id, mach->id, 8))) { dev_dbg(&pdev->dev, "found codec %s\n", snd_soc_cards[i].codec_id); card = snd_soc_cards[i].soc_card; drv->acpi_card = &snd_soc_cards[i]; + found = true; break; } } + + if (!found) { + dev_err(&pdev->dev, "No matching HID found in supported list\n"); + return -ENODEV; + } + card->dev = &pdev->dev; - mach = card->dev->platform_data; sprintf(drv->codec_name, "i2c-%s:00", drv->acpi_card->codec_id);
/* set correct codec name */