On Sun, Aug 20, 2023 at 11:16:08AM +0200, Takashi Iwai wrote: > On Fri, 18 Aug 2023 19:01:16 +0200, > Andy Shevchenko wrote: > > On Fri, Aug 18, 2023 at 11:00:34AM -0500, Pierre-Louis Bossart wrote: ... > > > > +static void tas2781_fixup_i2c(struct hda_codec *cdc, > > > > + const struct hda_fixup *fix, int action) > > > > +{ > > > > + tas2781_generic_fixup(cdc, action, "i2c", "TIAS2781"); > > > > > > TI ACPI ID is TXNW > > > > > > https://uefi.org/ACPI_ID_List?search=TEXAS > > > > > > There's also a PNP ID PXN > > > > > > https://uefi.org/PNP_ID_List?search=TEXAS > > > > > > "TIAS" looks like an invented identifier. It's not uncommon but should > > > be recorded with a comment if I am not mistaken. > > > > > > > +} > > > > Thank you, but actually it's a strong NAK to this even with the comment. > > We have to teach people to follow the specification (may be even hard way). > > > > So where did you get the ill-formed ACPI ID? > > Is Texas Instrument aware of this? > > Can we have a confirmation letter from TI for this ID, please? > > This is used already for products that have been long in the market, > so it's way too late to correct it, I'm afraid. > > What we can do is to get the confirmation from TI, complain it, and > some verbose comment in the code, indeed. Oh, no! Who made that ID, I really want to point that at their faces. Look at the Coreboot (successful) case, they created something, but in time asked and then actually fixed the ill-formed ID (that was for one of RTC chips). For this, please make sure that commit message has that summary, explaining that - states that ID is ill-formed - states that there are products with it (DSDT excerpt is a must) - lists (a few?) products where that ID is used - ideally explains who invented that and Cc them to the patch, so they will know they made a big mistake -- With Best Regards, Andy Shevchenko