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Audio control requests that sets sampling frequency sometimes fail on this card. Adding delay between control messages eliminates that problem. usb 1-1: New USB device found, idVendor=2fc6, idProduct=f0b5 usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 1-1: Product: iBasso DC-Elite usb 1-1: Manufacturer: iBasso usb 1-1: SerialNumber: CTUA171130B Signed-off-by: Lianqin Hu <hulianqin@vivo.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://patch.msgid.link/TYUPR06MB6217D8FF419F24378196FCEFD2FA2@TYUPR06MB6217.apcprd06.prod.outlook.com