提交 5c6864de 编写于 作者: T Takashi Iwai 提交者: Zheng Zengkai

ALSA: usb-audio: Apply the control quirk to Plantronics headsets

commit 06abcb18 upstream.

Other Plantronics headset models seem requiring the same workaround as
C320-M to add the 20ms delay for the control messages, too.  Apply the
workaround generically for devices with the vendor ID 0x047f.

Note that the problem didn't surface before 5.11 just with luck.
Since 5.11 got a big code rewrite about the stream handling, the
parameter setup procedure has changed, and this seemed triggering the
problem more often.

BugLink: https://bugzilla.suse.com/show_bug.cgi?id=1182552
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210304085009.4770-1-tiwai@suse.deSigned-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>
上级 b34be6b7
......@@ -1340,10 +1340,10 @@ void snd_usb_ctl_msg_quirk(struct usb_device *dev, unsigned int pipe,
msleep(20);
/*
* Plantronics C320-M needs a delay to avoid random
* microhpone failures.
* Plantronics headsets (C320, C320-M, etc) need a delay to avoid
* random microhpone failures.
*/
if (chip->usb_id == USB_ID(0x047f, 0xc025) &&
if (USB_ID_VENDOR(chip->usb_id) == 0x047f &&
(requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS)
msleep(20);
......
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