Takashi Iwai wrote:
Damien Zammit wrote:
On 07/11/14 01:15, Takashi Iwai wrote:
Hmm, can we achieve this without introducing the new audioformats thing, e.g. with COMPOSITE, instead?
I don't think COMPOSITE will work because the same interface has multiple endpoints. My code provides a framework for other devices with the same issue. I was told previously that this was the problem with getting my previous attempt into the kernel. Or is this doable without adding a struct?
I think the only point is the check in create_composite_quirk(), where it marks the iface as claimed and skips the next entry that has been already claimed. However, the current code looks inconsistent -- it allows multiple entries only if the iface matches with the current one. Fixing it like below would make things working.
It's a quick idea, so a bit more reviews would be needed, though. Clemens, what do you think?
Reviewed-by: Clemens Ladisch clemens@ladisch.de
--- a/sound/usb/quirks.c +++ b/sound/usb/quirks.c @@ -58,9 +58,17 @@ static int create_composite_quirk(struct snd_usb_audio *chip, err = snd_usb_create_quirk(chip, iface, driver, quirk); if (err < 0) return err;
if (quirk->ifnum != probed_ifnum)
- }
- for (quirk = quirk->data; quirk->ifnum >= 0; ++quirk) {
iface = usb_ifnum_to_if(chip->dev, quirk->ifnum);if (!iface)continue;if (quirk->ifnum != probed_ifnum &&!usb_interface_claimed(iface)) usb_driver_claim_interface(driver, iface, (void *)-1L);- return 0;
}