ALSA: usb-audio: Add quirk flags for SC13A

The SC13A ( VID 0x1ff7, PID 0x0f81) not support reading the current
sample rate and results in an error message printed to kmsg. Set
QUIRK_FLAG_GET_SAMPLE_RATE to skip the sample rate check.

Quirky device sample:
  usb 3-5.2.4.1: new high-speed USB device number 11 using xhci_hcd
  usb 3-5.2.4.1: New USB device found, idVendor=1ff7, idProduct=0f81
  usb 3-5.2.4.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
  usb 3-5.2.4.1: Product: SC13A
  usb 3-5.2.4.1: Manufacturer: Linux Foundation
  usb 3-5.2.4.1: SerialNumber: 000002
  usb 3-5.2.4.1: Found UVC 1.50 device SC13A (1ff7:0f81)
  usb 3-5.2.4.1: 3:1: cannot get freq at ep 0x86
  usb 3-5.2.4.1: Warning! Unlikely big volume range (=4096),
    cval->res is probably wrong.
  usb 3-5.2.4.1: [5] FU [Mic Capture Volume] ch = 1, val = 0/4096/1
  usbcore: registered new interface driver snd-usb-audio
  usb 3-5.2.4.1: 3:1: cannot get freq at ep 0x86
  usb 3-5.2.4.1: 3:1: cannot get freq at ep 0x86

Signed-off-by: Ai Chao <aichao@kylinos.cn>
Link: https://patch.msgid.link/20260617025234.3344935-1-aichao@kylinos.cn
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 30f6d572e4d1bf5293492626f10c3c8193bf3c45..1cb588691e16df2c3de9ab2f1263f6a584ca9ad0 100644 (file)
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -2413,6 +2413,8 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
                   QUIRK_FLAG_GET_SAMPLE_RATE | QUIRK_FLAG_MIC_RES_16),
        DEVICE_FLG(0x1bcf, 0x2283, /* NexiGo N930AF FHD Webcam */
                   QUIRK_FLAG_GET_SAMPLE_RATE | QUIRK_FLAG_MIC_RES_16),
+       DEVICE_FLG(0x1ff7, 0x0f81, /* SC13A Webcam */
+                  QUIRK_FLAG_GET_SAMPLE_RATE),
        DEVICE_FLG(0x2040, 0x7200, /* Hauppauge HVR-950Q */
                   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
        DEVICE_FLG(0x2040, 0x7201, /* Hauppauge HVR-950Q-MXL */