diff options
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/soc-core.c | 39 |
1 files changed, 35 insertions, 4 deletions
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index aae099c0e502..e14e04cc0a93 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -68,6 +68,20 @@ static int pmdown_time = 5000; module_param(pmdown_time, int, 0); MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)"); +/* If a DMI filed contain strings in this blacklist (e.g. + * "Type2 - Board Manufacturer" or "Type1 - TBD by OEM"), it will be taken + * as invalid and dropped when setting the card long name from DMI info. + */ +static const char * const dmi_blacklist[] = { + "To be filled by OEM", + "TBD by OEM", + "Default String", + "Board Manufacturer", + "Board Vendor Name", + "Board Product Name", + NULL, /* terminator */ +}; + /* returns the minimum number of bytes needed to represent * a particular given value */ static int min_bytes_needed(unsigned long val) @@ -1933,6 +1947,22 @@ static void cleanup_dmi_name(char *name) name[j] = '\0'; } +/* Check if a DMI field is valid, i.e. not containing any string + * in the black list. + */ +static int is_dmi_valid(const char *field) +{ + int i = 0; + + while (dmi_blacklist[i]) { + if (strstr(field, dmi_blacklist[i])) + return 0; + i++; + }; + + return 1; +} + /** * snd_soc_set_dmi_name() - Register DMI names to card * @card: The card to register DMI names @@ -1975,17 +2005,18 @@ int snd_soc_set_dmi_name(struct snd_soc_card *card, const char *flavour) /* make up dmi long name as: vendor.product.version.board */ vendor = dmi_get_system_info(DMI_BOARD_VENDOR); - if (!vendor) { + if (!vendor || !is_dmi_valid(vendor)) { dev_warn(card->dev, "ASoC: no DMI vendor name!\n"); return 0; } + snprintf(card->dmi_longname, sizeof(card->snd_card->longname), "%s", vendor); cleanup_dmi_name(card->dmi_longname); product = dmi_get_system_info(DMI_PRODUCT_NAME); - if (product) { + if (product && is_dmi_valid(product)) { len = strlen(card->dmi_longname); snprintf(card->dmi_longname + len, longname_buf_size - len, @@ -1999,7 +2030,7 @@ int snd_soc_set_dmi_name(struct snd_soc_card *card, const char *flavour) * name in the product version field */ product_version = dmi_get_system_info(DMI_PRODUCT_VERSION); - if (product_version) { + if (product_version && is_dmi_valid(product_version)) { len = strlen(card->dmi_longname); snprintf(card->dmi_longname + len, longname_buf_size - len, @@ -2012,7 +2043,7 @@ int snd_soc_set_dmi_name(struct snd_soc_card *card, const char *flavour) } board = dmi_get_system_info(DMI_BOARD_NAME); - if (board) { + if (board && is_dmi_valid(board)) { len = strlen(card->dmi_longname); snprintf(card->dmi_longname + len, longname_buf_size - len, |