On Thu, 2023-06-01 at 12:39 +0200, Joakim Tjernlund wrote: > On Wed, 2023-05-31 at 14:51 +0200, Joakim Tjernlund wrote: > > P710e, will throw an "cannot set freq 48000 to ep 0x3" error, no > > matter adding mdelays around setting sample rate. > > Please ignore this patch, the "cannot set freq 48000 to ep 0x3" only happens when > kernel(6.1.31) initially probes the device: > > [ 555.200166] usb 3-1: USB disconnect, device number 14 > [ 560.906553] usb 3-1: new full-speed USB device number 15 using xhci_hcd > [ 561.104340] usb 3-1: 2:1: cannot set freq 48000 to ep 0x3 > [ 566.342420] usb 3-1: 2:1: cannot get freq at ep 0x3 > [ 566.497056] input: Logitech Speakerphone P710e Consumer Control as /devices/pci0000:00/0000:00:14.0/usb3/3-1/3-1:1.3/0003:046D:0A4E.0008/input/input29 > [ 566.548828] input: Logitech Speakerphone P710e as /devices/pci0000:00/0000:00:14.0/usb3/3-1/3-1:1.3/0003:046D:0A4E.0008/input/input30 > [ 566.549086] hid-generic 0003:046D:0A4E.0008: input,hiddev97,hidraw5: USB HID v1.11 Device [Logitech Speakerphone P710e] on usb-0000:00:14.0-1/input3 > > I have a Jabra SPEAK 510 which behaves the same. > Once attached setting sample rate works. > > Seems like the devices are not ready to handle sample rate > this early when device is beeing attached. Does the kernel need to manage > sample rate before device is fully attached? This swap appears to make the initial error go away: diff -u stream.c.org stream.c --- stream.c.org 2023-06-01 12:54:41.229145989 +0200 +++ stream.c 2023-06-01 12:57:46.427514638 +0200 @@ -1226,8 +1226,8 @@ /* try to set the interface... */ usb_set_interface(chip->dev, iface_no, 0); snd_usb_init_pitch(chip, fp); - snd_usb_init_sample_rate(chip, fp, fp->rate_max); usb_set_interface(chip->dev, iface_no, altno); + snd_usb_init_sample_rate(chip, fp, fp->rate_max); } return 0; } But I don't really now what I am doing w.r.t USB/Audio Jocke
