When DMI information is not present, trying to assign the card long name results in the following warning.
WARNING KERN tegra-audio-graph-card sound: ASoC: no DMI vendor name!
The initial solution suggested was to test if the card device is an ACPI one. This causes a regression visible to userspace on all Intel platforms, with UCM unable to load card profiles based on DMI information: the card devices are not necessarily ACPI ones, e.g. when the parent creates platform devices on Intel devices.
To fix this problem, this patch exports the existing dmi_available variable and tests it in the ASoC core.
Fixes: c014170408bc ("ASoC: soc-core: Prevent warning if no DMI table is present") Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com --- drivers/firmware/dmi_scan.c | 1 + sound/soc/soc-core.c | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c index d51ca0428bb8..f191a1f901ac 100644 --- a/drivers/firmware/dmi_scan.c +++ b/drivers/firmware/dmi_scan.c @@ -166,6 +166,7 @@ static int __init dmi_checksum(const u8 *buf, u8 len) static const char *dmi_ident[DMI_STRING_MAX]; static LIST_HEAD(dmi_devices); int dmi_available; +EXPORT_SYMBOL_GPL(dmi_available);
/* * Save a DMI string diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 16ba54eb8164..c7e4600b2dd4 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -1574,7 +1574,7 @@ int snd_soc_set_dmi_name(struct snd_soc_card *card, const char *flavour) if (card->long_name) return 0; /* long name already set by driver or from DMI */
- if (!is_acpi_device_node(card->dev->fwnode)) + if (!dmi_available) return 0;
/* make up dmi long name as: vendor-product-version-board */