On Fri, Dec 22, 2023 at 10:55:49PM +0000, Ricardo Ribalda wrote:
> Logitech Rallybar devices, despite behaving as UVC camera, they have a
> different power management system than the rest of the other Logitech
> cameras.
>
> USB_QUIRK_RESET_RESUME causes undesired USB disconnects, that make the
> device unusable.
>
> These are the only two devices that have this behavior, and we do not
> have the list of devices that require USB_QUIRK_RESET_RESUME, so lets
> create a new lit for them that un-apply the USB_QUIRK_RESET_RESUME
> quirk.
>
> Fixes: e387ef5c47dd ("usb: Add USB_QUIRK_RESET_RESUME for all Logitech UVC webcams")
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx>
> ---
Would it make more sense to do this inside the uvc driver instead of
creating a new single-purpose list in the core?
Alan Stern
> Tested with a Rallybar Mini with an Acer Chromebook Spin 513
> ---
> Changes in v2:
> - Add Fixes tag
> - Add UVC maintainer as Cc
> - Link to v1: https://lore.kernel.org/r/20231222-rallybar-v1-1-82b2a4d3106f@xxxxxxxxxxxx
> ---
> drivers/usb/core/quirks.c | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
> index 15e9bd180a1d..8fa8de50e7f0 100644
> --- a/drivers/usb/core/quirks.c
> +++ b/drivers/usb/core/quirks.c
> @@ -553,6 +553,14 @@ static const struct usb_device_id usb_interface_quirk_list[] = {
> { } /* terminating entry must be last */
> };
>
> +static const struct usb_device_id usb_interface_unsupported_quirk_list[] = {
> + /* Logitech Rallybar VC systems*/
> + { USB_DEVICE(0x046d, 0x089b), .driver_info = USB_QUIRK_RESET_RESUME },
> + { USB_DEVICE(0x046d, 0x08d3), .driver_info = USB_QUIRK_RESET_RESUME },
> +
> + { } /* terminating entry must be last */
> +};
> +
> static const struct usb_device_id usb_amd_resume_quirk_list[] = {
> /* Lenovo Mouse with Pixart controller */
> { USB_DEVICE(0x17ef, 0x602e), .driver_info = USB_QUIRK_RESET_RESUME },
> @@ -718,6 +726,8 @@ void usb_detect_interface_quirks(struct usb_device *udev)
> u32 quirks;
>
> quirks = usb_detect_static_quirks(udev, usb_interface_quirk_list);
> + quirks &= ~usb_detect_static_quirks(udev,
> + usb_interface_unsupported_quirk_list);
> if (quirks == 0)
> return;
>
>
> ---
> base-commit: c0f65a7c112b3cfa691cead54bcf24d6cc2182b5
> change-id: 20231222-rallybar-19ce0c64d5e6
>
> Best regards,
> --
> Ricardo Ribalda <ribalda@xxxxxxxxxxxx>
>
