linux-kernel - Re: [PATCH] Add USB_QUIRK_DELAY_CTRL

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Date:   Wed, 02 Jan 2019 21:57:00 +0100
From:   Danilo Krummrich <danilokrummrich@...develop.de>
To:     Jack Stocker <jackstocker.93@...il.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kai-Heng Feng <kai.heng.feng@...onical.com>,
        Seth Forshee <seth.forshee@...onical.com>,
        Thadeu Lima de Souza Cascardo <cascardo@...onical.com>,
        Harry Pan <harry.pan@...el.com>,
        Kamil Lulko <kamilx.lulko@...el.com>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Add USB_QUIRK_DELAY_CTRL_MSG quirk for Corsair K70 RGB

You're referring to this patch
cb88a0588717 ("usb: quirks: add control message delay for 1b1c:1b20")
I guess. Maybe you want to name it explicitly for better reference.

Acked-by: Danilo Krummrich <danilokrummrich@...develop.de>


On 2019-01-02 19:37, Jack Stocker wrote:
> To match the Corsair Strafe RGB, the Corsair K70 RGB also requires
> USB_QUIRK_DELAY_CTRL_MSG to completely resolve boot connection issues
> discussed here: https://github.com/ckb-next/ckb-next/issues/42.
> Otherwise roughly 1 in 10 boots the keyboard will fail to be detected.
> 
> Signed-off-by: Jack Stocker <jackstocker.93@...il.com>
> ---
>  drivers/usb/core/quirks.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
> index 7909262..4a9267d 100644
> --- a/drivers/usb/core/quirks.c
> +++ b/drivers/usb/core/quirks.c
> @@ -377,7 +377,8 @@ static const struct usb_device_id usb_quirk_list[] 
> = {
>  			USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL },
> 
>  	/* Corsair K70 RGB */
> -	{ USB_DEVICE(0x1b1c, 0x1b13), .driver_info = USB_QUIRK_DELAY_INIT },
> +	{ USB_DEVICE(0x1b1c, 0x1b13), .driver_info = USB_QUIRK_DELAY_INIT |
> +	  USB_QUIRK_DELAY_CTRL_MSG },
> 
>  	/* Corsair Strafe RGB */
>  	{ USB_DEVICE(0x1b1c, 0x1b20), .driver_info = USB_QUIRK_DELAY_INIT |