On 03/09/2024 08:57, Krzysztof Kozlowski wrote: > On Tue, Sep 03, 2024 at 02:44:33PM +0900, Kiseok Jo wrote: >> Signed-off-by: Kiseok Jo <kiseok.jo@xxxxxxxxxxxxxx> >> --- >> sound/soc/codecs/Kconfig | 8 + ... > >> + if (ret) { >> + dev_err(&client->dev, "%s: failed to register component\n", >> + __func__); >> + >> + return ret; >> + } >> + >> + sma1307->attr_grp = &sma1307_attr_group; >> + ret = sysfs_create_group(sma1307->kobj, sma1307->attr_grp); > > Where is sysfs ABI documented? > Ah, now I see your sysfs ABI documentation, but you ordered patches incorrectly. Documentation comes before its usage. Best regards, Krzysztof